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Spritzgießen 2016

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 4344 2016

Results in this title

E. Foltin Material follows function – Zukunftsperspektiven für die Kunststoffe von morgen S. 223-224

„… Material follows function Zukunftsperspektiven für die Kunststoffe von morgen Dipl.-Ing. (FH) E …” „… function zu Material follows function – Individualisierung: gezielte Eigenschaftsprofile durch generative …” „… – Virtualisierung: Zugang zu professionellen Produktionsprozessen – Funktionalisierung: Wechsel von Design follows …”

doi.org/10.51202/9783182443445

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Improving the robustness of the finite cell method for problems with large deformations

Wadhah Garhuom

Series: Mechanik/Bruchmechanik

Volume 359 2024

Results in this title

Basic equations of continuum mechanics S. 6-16

„… with the following strain energy density functionWe =λ4(I3 − 1− ln I3) +µ2(I1 − 3− ln I3) . (2.36)Here …” „… equilibrium conditions of a body. Then, we address the constitutive equationsand material models used in this …” „… a material point in the undeformed or initial configu-ration with the time t = 0. The position of a …”

Introduction S. 1-5

„… and material interfaces aremade possible.In this thesis, we will focus on the FCM as a spatial …” „… high-order shape func-tions to improve the accuracy of the solution. The FCM was successfully applied toa …” „… , 82–84, 122, 136, 137], material interfaceproblems [54, 91, 93, 94, 96], homogenization [50, 73–75], and …”

Eigenvalue stabilization technique to increase the robustness of the FCM S. 59-88

„… the rigid body modes by not removing the nodal modes of the shape functions.In doing so, the …” „… fraction. Figure 5.1 plots the condition number using different polynomial degreesp of the shape functions …” „… term is added to the weak form to penal-ize jumps in the normal derivatives of the shape functions of …”

Remeshing strategy for large deformations in the FCM S. 89-129

„… by evaluating the modified radial basis functionΘi (r̂) = Φ(βr̂r̃i)(6.30)at the distance r̂ between …” „… solution. To this end, the radial basis function(RBF), as well as the inverse distance weighting (IDW …” „… displacement is quantified using a material or Lagrangian formu-lation. The material description can be divided …”

Non-negative moment fitting quadrature for cut finite elements and cells S. 27-58

„… . This can beeasily obtained by applying a tensor product of the one-dimensional polynomial functions.For …” „… shape functions.Figure 4.17: Single pore of a foam [60, 61]. (a) Geometry and boundary conditions. (b …” „… as the blending function method usedin the context of high-order FEM. In doing so, at each tree-depth …”

doi.org/10.51202/9783186359186

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International Conference on Gears 2023

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2422 2023

Results in this title

P. E. Schnetzer, J. Pellkofer, K. Stahl Calculation method for wear of steel-bronze rolling-sliding contacts relating to worm gears S. 907-926

„… , which can be calculated. Thus, for each material-lubricant pairing investigated, the function between …” „… derive the function, the total material loss of the bronze disk for a single lubrication condition (i) is …” „… N Normal-load W - Load parameter G - Material parameter W - Pressure factor h μm Minimum film …”

W. Kassem, J. Müller, M. Oehler, O. Koch Analytical tooth root stress calculation for short fiberreinforced plastic gears S. 1361-1374

„… gears made of homogeneous and isotropic materials. In this work, an approach was developed for an …” „… fiber orientation in the tooth root and the anisotropic elastic material behavior. In addition, the …” „… orientation in the gear and the anisotropic material properties. 1. IntroductionThe advantages of plastic …”

D. Gallagher, E. Wiita, R. Weidig Improved Method for Validation of Root Stress in Polymer Gears S. 1333-1350

„… factor KF which combines the application factors as follows (Equation 8). Equation 8: Function for KF …” „… as follows (Equations 13 & 14, below): Equation 13: Function for YF STB modified from ISO 6336-3:2019 …” „… ] FFa and hFFa are derived as follows (Equations 15-17, below): Equation 15: Function for Fa derived as …”

J. Hongu, S. Hattori, J. Kato, T. Koide Gear friction coefficient estimation using directional parameter under ATF lubricated condition S. 753-762

„… proportionally to its surface roughness to a power of 0.25. Xu et al. [13] developed an exponential function that …” „… combinations of gear pairs was calculated with Tgear,G, as follows. ,1 gearingear total spin bearing gear GTTT …” „… pair [14], as follows. 260Ave.geareSnTpvdA(3) where S is the total area of the plane of action of one …”

G. Guimarães, L. Robatto, R. Rego, A. Faria, A. Borille, J. Mascheroni Surface integrity of 20MnCr5 pinion gears manufactured through laser powder bed fusion S. 1845-1858

„… electromobility impose new demands on the gear Industry in terms of materials, design and manufacturing. In this …” „… excessive stress states during finishing processes. For carburizing materials, such as 20MnCr5, the …” „… processability of the material and investigates the surface integrity of the gears through the manufacturing …”

C. Karampatzakis, A. Mihailidis, A. Mantzaflaris, C. Provatidis Contact simulation of tooth flanks using Isogeometric Analysis S. 413-428

„… equipped with a “weight” coefficient , . The rational basis functions are then de-fined as follows: 𝑅 …” „… functions instead. , 𝑅 ,, , ,Since the Isogeometric Analysis follows the isoparametric concept [16], the …” „… contact modelling are that, since the most commonly used basis functions are linear, geometric error is …”

E. Grabovic, A. Artoni, M. Gabiccini, E. Ciulli Exploration of trade-offs between NVH and efficiency in bevel gear design S. 853-880

„… simulation tool. The maximum contact pressures are limited by the material properties, thus proper nonlinear …” „… transmission ratio function based on rigid TCA assumptions. A numerical test case demonstrated that this method …” „… parameters representing the seventh-order function are assumed to be known, and no guidelines are provided …”

B. van Wissen, L. Pastukhov, F. Mitsuzuka, K. Iwanaga, A. Hasanovic NVH performance of thermoplastic gears: modelling and measuring S. 1389-1402

„… applications. Intrinsic material properties of thermoplastic materials in combination with its functionality …” „… : Performance Materials and Specialty Materials including Stanyl®. Envalior was founded as a new company in 2023 …” „… as a merge between two high performance material suppliers: DSM Engineering Materials and Lanxess HPM …”

J. Lövenich, M. Zalfen, D. Mevissen, J. Brimmers, C. Brecher Crack growth based tooth root life prediction model – an influence quantity analysis S. 109-124

„… consideration of a constant fatigue strength level does not meet the material behaviour. A life prediction model …” „… high-purity materials produced in complex remelting processes. On the other hand, the roughness of the …” „… processes and a superfinishing process to optimize the roughness. The combination of high material purity …”

A. Alnahlaui, P. Tenberge Optimised statistical evaluation for the determination of tooth root endurance strength S. 19-32

„… distribution function varies according to the alloy and treatment of the material. An overview of the basics of …” „… statistically distributed material inhomogeneities and inclusions as well as variations in the material …” „… density function 𝑓 𝑥 of normal distribution is completely described by two parameters: the mean, or …”

J.-H. Park, B.-S. Kim, D. Im, D.-J. Moon, J.-H. Kim, Y.-J. Park Development of Damage-based Accelerated Life Test Code for Gearbox using Genetic Algorithm S. 329-340

„… conditions similar to damage in the existing duty cycle. 2. Methods and materials 2.1 Test gear geometry …” „… as follows. i) have the same damage as possible for sun gear contact damage, planet gear contact …” „… , and the objective function is 𝑓 and 𝑓 , both of which are set to the minimum value. VDI-Berichte Nr …”

J. Lohmiller, F. Dobler, M. Wöppermann Investigating different nodular graphite irons for the application of gears – a step towards standardization by using reasonable quality criteria S. 1731-1748

„… , obwohl das Material seit Jahren eingesetzt wird. Darüber hinaus ist ADI immer noch nicht in die …” „… . 2422, 2023 1731Abstract Austempered Ductile Iron (ADI) is a commonly used material for the geared rim …” „… material. Therefore, fatigue tests on test gears were performed in a pulsator test rig with accompanying …”

M. Willecke, J. Brimmers, C. Brecher Experimental Investigation of the load carrying capacity of beveloid gears with optimized flank topography S. 125-138

„… Zahnflankenmodifikationen für Beveloidverzahnungen,” Diss., RWTH Aachen University, Aachen. Eng. Title: Function-oriented …” „… taking into account the local material and stress condition as well as the tooth flank micro geometry …” „… material values. 𝜎 𝜎 Equation 1 4.2. Testing of the load caring capacity of cylindrical gears Stress …”

T. Jagiella, S. Haller, J. Lechner, T. Rung, M. Wöppermann, B. Zeeb Building a software toolchain for automated mass-customization of specific end-use gear unit parts using AM-driven design guidelines S. 1607-1616

„… also features information about material, material properties and functional areas like fix points or …” „… and flexibility in order to make it adaptable for a large variety of geometries, materials, use cases …” „… , lightweight parts, low material usage and no additional cost or engineering hours for tailor-made parts. These …”

T. Inoue, D. Iba, N. Fujita, A. Nishikawa, M. Ishii, J. Hu, H. Shimasaki, N. Miura, A. Masuda, I. Moriwaki, J. Hongu Effect of Load Cycles on Return Loss and Resistance of Sensor and Antenna Circuits Printed on Plastic Gears S. 659-674

„… with both sensor and antenna functions and an observation antenna connected to a network analyzer can …” „… . 1. Introduction If power is lost due to damage to gears, the machine loses its function. To avoid …” „… of module 1 mm, tooth width 10 mm, and 48 teeth. The material is MC901, an engineering plastic PA6 …”

I. Atanasovska, D. Momcilovic Analysis of new tooth profile design based on the biomimetics principles S. 945-956

„… Momcilovic, Institute for material testing IMS, Belgrade, Serbia AbstractDuring the last decades, the …” „… gradients obtained by Finite Element Analysis. The analysis of material variation influence on the tooth …” „… disciplines, such as biomimetics design [1-4], and design of new or improved materials [5-8]. The involute …”

S. Ebrahimi, U. Kissling, C. S. Matkovič Evaluation of the NVH Characteristics of Gear Drives with Plastic Gears by the Forced Response Analysis S. 1403-1418

„… , pp. 205–213, 2008. [20] RecurDyn User Manual, FunctionBay, 2019. VDI-Berichte Nr. 2422, 20231418 …” „… goal can be achieved by choosing the gear body material with higher damping properties within the …” „… different schemes. Two variants of the model with different gear material, one with plastic gears and one …”

A. Yavuz Kanyilmaz, B. Karba, M. VARDAR Classifying plastic beveloid gear quality considering manufacturing errors S. 1159-1172

„… for gears made of plastic material (external-external and/or external/internal) with the involute …” „… external gear made of plastic material in a 3D printer. The quality classification of cylindrical, worm …” „… can function properly within tolerable limits. Various methods are used for gear inspection, these …”

A. Hilligardt, V. Schulze Gear Skiving with Minimum Twist Errors S. 1749-1764

„… Introduction Global energy and climate targets and the shortage of raw materials require advances in energy …” „… efficiency and material utilization. At the same time, the limited space available for mobile applications …” „… involute function inv, tool teeth z0, workpiece teeth z2, the workpiece generation profile shift factor xE …”

M. Reichl, P. Lenz, A. Oliva Challenges and possibilities of virtual development of e-axle transmissions S. 485-498

„… represented by a set of fluid particles that have material properties, such as density and viscosity, and …” „… interact with the surrounding particles within a region controlled by a smoothing function [4]. A key …” „… 𝑥 as follows [5]:∙𝑖 𝐹 (1.3) where is the particle velocity, is time, density of the particle …”

L. Bonaiti, M. Monti, C. Gorla, M. Geitner, T. Tobie, K. Stahl The consequences of different methodologies for the elaboration of pulsator test results with respect to the load spectrum assessment of gears S. 33-52

„… been mainly defined by the authors. The first approach generally follows the determination of the …” „… adopted to investigate the strength of a gear (or a gear material) with respect to tooth root fatigue …” „… terms of torque, and also provided information about the gear pair geometry and its material. As the …”

doi.org/10.51202/9783181024225

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Interactions between enzymes and oxide colloidal particles and their influence on enzymatic activity

Ludmilla Derr

Series: Grund- und Werkstoffe/Kunststoffe

Volume 760 2016

Results in this title

Interactions between colloidal particles in aqueous suspension S. 5-21

„… composed of material 1 and material 2 in medium 3 can be calculated as a function of the Hamaker constant …” „… particle surface are a function of pH, the surface Charge density a0 can be calculated as follows56: ob …” „… with radii rj and r2 on the Separation distance H of the particles as follows51: = A f2rjr2 | 2 rir2 …”

Protein adsorption S. 34-40

„… of the material - concentration - hydrophobicity/ hydrophilicity - amount of already adsorbed …” „… changes can have a strong effect on protein function, with positive or negative changes in enzymatic …” „… stabilizing or destabilizing effects on the adsorbed protein layer and can modify protein function29, and …”

Enzymatic activity S. 41-47

„… to a second-order reaction. This reaction can be written as follows66' 72,117: k, ks E + s *" E S …” „… of free enzyme. Two reactions are important in this case: ES returning to the starting material …” „… concentration of a product formed or the substrate remaining as a function of time. For Products or substrates …”

Titelei/Inhaltsverzeichnis S. I-XX

„… enzym e adsorp tion w a s spe c if ic a lly investigated by material characte riza tion before and …” „… Materials 61 8.2.2 Characterization of T i0 2 colloidal particles 61 8.2.3 Hydrophobie/hydrophilic …” „… a-chymotrypsin after adsorption 82 9.1 Introduction 82 9.2 Experimental section 83 9.2.1 Materials 83 9.2.2 …”

Effects of silica and alumina colloidal particles on enzymatic activity of achymotrypsin after adsorption S. 82-102

„… basic conditions. For both materials, Chymotrypsin exhibited a strong decrease in specific activity …” „… insoluble support materials for enzyme immobilization7' 9' 13, 19, 178‘ 180. Due to their numerous …” „… necessary to compare the suitability of support materials. 82 Based on these considerations, we analyzed …”

Physisorption of a-chymotrypsin on SiO2 and TiO3: a comparative study via experiments and molecular dynamics simulations S. 103-139

„… adsorption are estimated on the two materials via a Langmuir adsorption analysis, about 50 % more proteins …” „… activity and stability6' 8. Covalent binding permits a stable enzyme fixation to the carrier material and …” „… solid supports or carrier materials in biotechnological applications2' 180, 192‘195. These include …”

Colloidal particles, their surface functionalization and covalent enzyme mobilization S. 27-33

„… atoms are 27 represented as follows: aluminum as green spheres, oxygen as red spheres and hydrogen as …” „… white spheres. The corresponding PDB-ID was kindly provided by the Hybrid Materials Interfaces Group …” „… (b) of Silicon atoms and oxygen atoms are shown. The atoms are visualized as follows: Silicon as …”

Conclusions S. 164-167

„… this study. Depending on the experimental requirements, four types of colloidal materials were used as …” „… carrier materials: AI2O3, Si0 2 and two types of TiÜ2 . As the most straightforward and mild method …” „… Biology/ Chemistry, University of Bremen, Germany), and the Hybrid Materials Interfaces Group (Faculty of …”

doi.org/10.51202/9783185760051

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International Conference on Gears 2019

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2355 2019

Results in this title

X. Du, B. Chen, X. Shan Robust force control of series elastic actuator using disturbance observer S. 1111-1122

„… transfer function between ˆ dissF and des sF is derived by using Fig. 4 as follows: 2 1 2 ˆ …” „… derived from Fig. 1 as follows: ( )gn g gn g in n g l cJ q B q F K q q D (1) ( )ln l ln l …” „… deflection of rubber spring. However, the rubber spring is a viscoelastic material that has the drawback of …”

K. Humm, M.-S. Wirth, A. Linnemann, T. Schalk Determination of fatigue strength of plastic gears under consideration of environmental influences S. 1291-1298

„… , the development of plastic gears is more challenging. This is mainly due to the more complex material …” „… presents a method with which the complex material behavior can be determined cost-effectively with …” „… sufficient accuracy. It shows a material behavior which can be used in different calculation methods. These …”

B. Azzam, F. Harzendorf, R. Schelenz, G. Jacobs, W. Holweger White etching crack bearing failure: identification of high risk lubricant compounds using artificial neural networks S. 569-582

„… investigation follows a novel approach using machine learning techniques combined with an industrial analytics …” „… investigation follows a novel approach using machine learning techniques combined with an industrial analytics …” „… of the chemical compound interactions (CCI) and the known surface material. The bearing material …”

J. Lohmiller, J. Hoffmeister, J. Hermes Conventional high-strength nodular graphite iron as a substitute for austempered ductile iron (ADI) S. 877-892

„… GmbH & Co. KG, Bruchsal Abstract Cast iron materials are becoming more widely used for large and …” „… the potential of these materials, an in-depth characterization of their mechanical properties is …” „… . The material was characterized by very fine nodular graphite. The material has been cast into …”

B. van Wissen, M. Kanters, F. Mitsuzuka, K. Iwanaga, Ir. A. Hasanovic Predicting wear for high performance plastic gears S. 1323-1334

„… wear of plastic gears. The framework is demonstrated via a case study on an unfilled material, which …” „… wear require iterative wear analyses. 1. Introduction DSM is a global material and life science …” „… petrochemical material products and nutritional solutions. DSM Engineering Plastics (DEP) is one of DSM’s …”

A. Kubo, M. Nagae, K. Kawasaki Japanese standardization for gear steel qualification via evaluation of HV-scattering S. 893-902

„… of the target steel. In this paper, some examples for good and bad raw steel material, for heat …” „… introduced. 1. Introduction The probability of material problem causing gear failure looks increasing since …” „… purchasing department of gear material is “Why we pay much money for the same steel”. To check the real …”

T. Sturmlinger, A. Comak, A. Albers, S. Gerdhenrichs, R. H. Schmitt Methodical analysis and selection of auto identification systems in the gear box manufacturing S. 1509-1520

„… product functions, product geometry, production and Industry 4.0 potentials in a specific use-case. The …” „… Figure 1. In this contribution, especially the interdependencies between product function, embodiment …” „… Industry 4.0”. This term is defined in [2] as follows: “In the context of the Karlsruhe School for Product …”

I. Bae, U. Kissling Comparison of strength ratings of plastic gears by VDI 2736 and JIS B 1759 – In vision of building a new international standard S. 1267-1278

„… mainly VDI-Berichte Nr. 2355, 2019 1267 stem from its unique material properties. Thus, the strength …” „… rating considering the special material properties of the plastics is necessary for the reliable design …” „… geometry and material. In addition, VDI is based on method C of DIN and JIS on method B of ISO …”

E. V. Kozharinov, J. M. Temis Dynamic model of bevel gearing with friction damper S. 635-644

„… . 2355, 2019 635 damper, it is necessary to know the function exciting force acting on a bevel gear from …” „… internal damping in the material on the corresponding vibration mode; Ωк – diagonal matrix (n × n) of …” „… ), (3) and (4), formula (1) can be written as follows: к Ωк β к Ωк к Т Ф к к (5) where Ф к к Т Т ; Т …”

J. Fechler, S. Oberle, M. Knopfle, V. Merz Improvement of the noise and vibration behavior of an electromechanical brake booster – An integral approach S. 1431-1442

„… short explanation of the mechanical and functional system setup it follows the approach and procedure …” „… driver assisted functions to be setup, e.g. emergency braking, traffic assist. This set of new functions …” „… interfaces to the vehicle. The materials of the gears are metal and plastic. The motor pinion and the …”

L. Hui, X. Changl, Y. Shouw, L. Cheng, Z. Chen, L. Yu Research on Dynamic Drum Shape Modification of Helical Gear Pair S. 1011-1026

„… are the non-linear functions of the gap and velocity of the i -th pair of slice gears, respectively …” „… ). And all errors are defined as positive with respect to the standard involute gear increase material …” „… , and the removal material is defined as negative. , ( / 2 )( )ii d sd d be b (8) Due …”

R. Beilicke, L. Bobach, D. Bartel Transient 3D TEHL simulation of spiral bevel gears under mixed friction conditions S. 529-540

„… point of the octoid on the spherical surface with the radius R can be described as follows as a …” „… function of the angle of rotation of the bevel gear around the z' axis, see Fig. 3: (1) with …” „… surface with the radius RL as a function of the angular coordinate L, see Fig. 3. In the tooth trace …”

P. Lopez Garcia, S. Crispel, T. Verstraten, E. Saerens, B. Vanderborght, D. Lefeber Wolfrom gearboxes for lightweight, human-centered robotics S. 753-764

„… , household, elderly care or the replacement of lost limbic functions. However, the robotic gearboxes …” „… , but also fields like surgery, household, elderly care or the replacement of lost limbic functions [7 …” „… . This document is structured as follows: in the second chapter we present a set of traditional …”

A. D. Rauch, C. Wirth An easy-to-use and fast computational model for the prediction of the influence of manufacturing errors on gear transmission error S. 645-656

„… material compared to the ideal profile. Thus, teeth 1 & 3 are pushed away from their ideal position on the …” „… Table 1. We define a sinusoidal profile deviation expressed in the LOA coordinate as follows: W sin …” „… first harmonic of the GMF though for W α 2.3 there are 3 peaks with excess material along the tooth …”

S. Yokoyama A study of gear oil performances contributing to wind turbine lifetime extensions S. 845-856

„… : Surface photograph of stereomicroscope and roughness of an used gear 2. Materials and Methods 2.1 …” „… shock tests. 3.4 Analysis of the tooth surface To know the function of EP additives on pinion …” „… function. Fig. 8: The calculation results of μPV value One tooth meshing Pitch Pinion tip …”

K. Mukaiyama, M. Nakagawa, T. Hirogaki, E. Aoyama Investigation of meshing phenomenon of hypoid gears with different offsets via high response infrared video thermography S. 505-516

„… Contact ratio 1.99 2.31 2.65 Material S45C S45C S45C Tooth surface finish Grinding Grinding Grinding …” „… , especially with respect to the material and surface treatment. In our previous research, it had been found …” „… efficiency η is a function of only the sliding velocity V, assuming that the friction coefficient is a …”

P. Scholzen, C. Lopenhaus, C. Brecher, D. Billenstein, F. Rieg, G. Hammerl Investigation of the influence of elastic gear body structures on the operational behavior of gears S. 785-796

„… , thermal and modal analyses. For threedimensional elements it is calculated as follows: element quality …” „… of the shape functions were varied and the resulting result files were compared with each other and …” „… the higher material content in the gear body, the fluctuation of the gear mesh stiffness in is …”

Z. H. Wu, Y. Q. Xu, K. A. Liu The Analysis on Grease Lubrication at Two Tapered Bodies Contact Considering Surface Roughness S. 1223-1236

„… 's theory of elastic half-space, lubricant film shape between two bodies is as follows …” „… discussions The structural and material parameters of two tapered elements and main rheological parameters of …” „… /μm VDI-Berichte Nr. 2355, 2019 1229 Table 1: Geometry, material and rheological parameters …”

A. Schiller, T. Beckmann, M. Fratz, T. Seyler, A. Bertz Optical gear measurement: holographic system for 100 % inspection S. 1545-1550

„… phase of an incident light wave are captured. The basic setup is as follows: coherent laser light …” „… and follows its rotation, while it is not influencing the gear itself. It can be easily adapted to …” „… the exact shape of the defect can be analyzed and possible material defects can VDI-Berichte Nr. 2355 …”

doi.org/10.51202/9783181023556

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Partitioned Fluid-Structure Interaction Simulation of Maritime Applications

Jorrid Lund

Series: Mechanik/Bruchmechanik

Volume 360 2024

Results in this title

Structural mechanics S. 5-20

„… Lagrangian formulation (also referred to as material formulation) inwhich the viewpoint follows the motion of …” „… material formulation) inwhich the viewpoint follows the motion of the body [29, p. 498].In order to work …” „… discretized displacements dd,i and the shape functionNi(ξ) asdh =m∑i=1Ni(ξ)dd,i (2.21)with m being the number …”

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The hierarchical finite cell method for nonlinear problems: Moment fitting quadratures, basis function removel, and remeshing

Simeon Hubrich

Series: Mechanik/Bruchmechanik

Volume 355 2021

Results in this title

Basic elements of continuum mechanics S. 6-22

„… particles, also called material points, forming a homogeneous body Ω with closed boundary ∂Ω, as depicted in …” „… the location of a material point is defined by the position vector X. Now, let us assume that the body …” „… configuration ϕ (Ω). Based on 6 2.1 Kinematics the Lagrangian approach – which follows the motion of a particle …”

Introduction S. 1-5

„… show that the combination of the basis function removal together with the fictitious material approach …” „… 1 Introduction 1.1 Motivation Novel materials – like composites or metal foams – as well as modern …” „… . There is also increased interest in these materials and manufacturing processes in other industrial …”

A remeshing strategy for the FCM S. 124-149

„… on a polyconvex strain energy density function is assumed. A brief description of the material model …” „… and isotropic material behavior based on a polyconvex strain energy density function. A brief …” „… robustness of the FCM can be improved by employing a fictitious material model or by simply removing critical …”

The finite cell method S. 23-35

„… indicator function α is introduced – which is one for material points within the physical domain Ω and zero …” „… method (FCM) that is based on a combination of the fictitious domain approach and shape functions of …” „… respect to the extended domain Ωe. Taking advantage of the indicator function α the weak form of the …”

doi.org/10.51202/9783186355188

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Kunststoffe im Automobilbau 2016

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 4342 2016

Results in this title

L. Gervat, M. Lacuve, J. M. Fiard, G. Gauge, F. Bekaert Determination of thermal damages undergone by plastic parts in stochastic environments: application to air ducts S. 107-120

„… reaction A B follows the well-known Arrhenius law: d[A]/dt = - d[B]/dt = - k [A]n, with k0 being a …” „… evolution with a similar equation. In particular their half-life which often follows the following …” „… different apparent activation energy! Fig. 4: Evolution of Arrhenius laws as a function of …”

doi.org/10.51202/9783182443421

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Plastics in Automotive Engineering 2016

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 4343 2016

Results in this title

L. Gervat, M. Lacuve, J.M. Fiard, G. Gauge, F. Bekaert Determination of thermal damages undergone by plastic parts in stochastic environments: application to air ducts S. 105-118

T. Hilgers Thermally conductive plastics: a mineral solution – Thermal management in thermoplastics and thermosets S. 193-204

„… while simultaneously maintaining the electrical insulationing function of the plastic materials used …” „… incorporation of additives with a high inherent thermal conductivity. The various materials which can be used …” „… these materials out. All metals also have good electrical conductivity. However, there are applications …”

M. Derks Carbon core: the use of CFRP in the body structure of the BMW 7 Series S. 83-92

„… , materials and technology fields and also in the supplier network it was possible to integrate the material …” „… have always been particularly partial to elegance of line with exclusive materials, a high level of …” „… materials required. The innovative insulating concept simultaneously ensures another improvement in acoustic …”

H. Schmidhuber Perspectives in automotive polymer glazing – Polycarbonate makes use in side and rear windows possible S. 67-82

„… trivial differences between the two materials as regards design (moldability) and functional integration …” „… g/km. Polycarbonate (PC) is a lightweight material which has been used in cars for some time …” „… transparent like glass, but can be given any hue. Over the years the potential of this high-tech material has …”

R. Krischke, R. Poltrock, S. Stein Development of a lightweight instrument-panel support structure Material and production concept of the instrument-panel support tube made of long-glass-fiberreinforced partly aromatic polyamide for th... S. 259-278

„… Development of a lightweight instrument-panel support structure Material and production concept …” „… for the cockpit integration module and in this main function also contributes to the structural …” „… series. The use of a long-glass-fiber-reinforced thermoplastic material meant that a weight saving of …”

M. Kurz 3D simulation for lightweight construction in the plastics processing industry S. 17-28

„… in recent years. Injection stands at the center of the RTM process. Since the most varied materials …” „… completion of development. Local material properties, such as fiber orientation, porosity (during expansion …” „… follows. 18 What all these methods have in common is that dry mats are impregnated with a liquid matrix …”

doi.org/10.51202/9783182443438

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Partitioned solution strategies for electro-thermo-mechanical problems applied to the field-assisted sintering technology

Patrick Erbts

Series: Mechanik/Bruchmechanik

Volume 345 2016

Results in this title

Numerical methods S. 45-78

„… functions η and by integrating over the domain Ω0 ⊂ Rn which is occupied by the body B under investigation …” „… . The result is a equation which now has weak solutions in Ω0 with respect to the test functions. Such …” „… functions are chosen out of the following test space V η( X) ∈ V , V := { η( X) with X ∈ Ω0 ∣∣∣ η = 0 …”

Governing equations S. 8-44

„… fourth-order material tensor ∼C. The strain-energy function W stores the information about how stress in a …” „… hyper-elastic material, it is often assumed that the strain-energy function W is additively split in an …” „… on different types of strain-energy functions for hyperelastic materials can be found in [72], for …”

Numerical examples S. 145-170

„… , first without powder consolidation and finally using a material model for highly compressible copper …” „… developed to tackle the threefield problem. This strategy basically follows ERBTS ET AL. [51] and is applied …” „… . Because the layers consist of different materials, the thermal strains in the layers differ from each …”

Solution of coupled problems S. 79-144

„… are called alternately, meaning that the new solution zk+1 is a function of the actual solution zk and …” „… follows: First, the problem is solved using the first operator A1 with the original initial condition …” „… The secant method follows directly from Aitken’s Δ2-method and can therefore been seen as an extension …”

Appendix S. 174-185

„… to w1 + w2 + w3 = ABP ABC + PBC ABC + APC ABC = 1 . (A.32) Consequently, it follows that the …” „… = 0 ∧ φ̇ ≥ 0 Interpolated single surface convex yield function φ = c k ln ( eg1/(ck)+e g2/(ck) 2 ) , g …” „… ∼Cp 184 Appendix The constitutive material model for copper powder that is used for the sintering …”

doi.org/10.51202/9783186345189

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Autonomous Systems 2017

Herwig Unger (ed.), Wolfgang A. Halang (ed.)

Series: Informatik/ Kommunikation

Volume 857 2017

Results in this title

Nkiedel Alain Akwir, Muhindo Kule Mutengi A Survey of Traffic Flow Modelling Concepts: Pros and Cons of Traditional Models S. 230-244

„… function) are given as follows: λ1 = u− γ p(k) and λ2 = u (16) The eigenvalues are less than the traffic …” „… . The drawback of this model is that it completely follows the behavior of the fluid flow, while the …” „… in form of a function of a dependent variable like density, flow or speed with respect to independent …”

Gerhard Sartorius Data Preprocessing and Outlier Detection in Multivariate Data S. 105-140

„… in the multidimensional space depend on the kind of distance function used2. The use of a standard …” „… be used as distance functions, e. g. the L1-Norm (Manhattan distance) or the L2-Norm (Euclidean …” „… . the aging or fatigue of the material that the measuring tube is made of; 112 Gerhard Sartorius 3. the …”

doi.org/10.51202/9783186857101

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OPE Journal

Browse Volumes: OPE Journal

OPE Volume 12 (2022) Issue 39 ISSN Online: 2366-8040

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Wolfgang Mildner Why do Smart Textiles take so long to develop/market? S. 28

„… , in “Smart Fibres, Fabrics and Clothing,” defined smart textiles as follows: intelligent textile …” „… sensors for tem-perature, humidity, or complex functions like heartrate monitoring. These evaluation and …” „… communication functions very often require conventional electronics and performance, so hybrid integration is …”

doi.org/10.51202/2366-8040-2022-39

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Experimental testing and numerical simulation of granules as crash absorber for double hull structures

Christian Woitzik

Series: Mechanik/Bruchmechanik

Volume 356 2021

Results in this title

Constitutive equations and numerical implementation S. 6-23

„… contrast, the hypoplastic material model is more complex and follows a different approach [76, 77]. Here …” „… ) Here, q̇ = 0, and Dp = 0 follows as before. Thus, the material response is elastic. The second case is …” „… ) where x defines the location of the particle or material point X at the time t. Thus, the function ϕ …”

Selection of granules and description of single grains S. 24-39

„… nearly constant over a granular material, it follows that the elastic contact force is proportional to d2 …” „… partner. 3.1 Selection of granules The material used inside a double hull structure has to fulfil …” „… , as it is one of the main reasons for choosing granules as filling material. This is due to two …”

Determination of bulk particle properties S. 40-63

„… granules as bulk material. On the one hand, this is done to determine the material parameters from the test …” „… results, using the analytical description of the material models. Therefore, geomechanic tests are …” „… is performed to adjust the material parameters with respect to compression ratios for the uniaxial …”

doi.org/10.51202/9783186356185

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Reactor network synthesis with guaranteed robust performance

Xiao Zhao

Series: Verfahrenstechnik

Volume 952 2017

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Open-loop reactor network synthesis S. 30-46

„… chapter follows a similar way of presentation: first modeling and afterwards problem formulation. Solution …” „… chlorination of propylene in the vapor phase [129]. The reaction mechanism is as follows: Cl2︸︷︷︸ C +CH2 − CHCH …” „… and chlorine. A, C are raw materials, B is the main product, while 1,3-dichloropropene and 1,2 …”

Solution methods S. 60-106

„… ). Proof. Because ∇tg′(t̄) = ∇xg(x̄ + t̄, ȳ) = 0, the results of (i) follows from the implicit function …” „… nonlinear objective function and/or constraints. A general form of a MINLP is min f(x, y) s.t. g(x, y) ≤ 0 …” „… , x ∈ X, y ∈ {0, 1}ny . (5.1) The functions f(x, y) and g(x, y) are nonlinear, twice continuously …”

Introduction S. 1-16

„… classical design problem in process systems engineering, which is defined as follows [19]: “For given …” „… ]. The conversion rate of raw material, the operating cost and also the dynamic properties of a process …” „… patterns of all reactors, i.e., how each reactor is fed with raw materials. Raw materials may be fed into a …”

Simultaneous design of reactor network and its decentralized control system S. 47-59

„… scalar-valued smooth function. Denote y = (y1,1, · · · , yN,nNc )T ∈ Rnc as a vector containing all candidate CV …” „… related to the subindex (i, r) of yi,r by introducing a function (i, r), so that yi,r is the (i, r)-th …” „… function of (·). Any (not necessarily decentralized) feedback control system involving PI controllers can …”

doi.org/10.51202/9783186952035

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Plastics in Automotive Engineering PIAE EUROPE

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2343 2019

Results in this title

M. Schneider, A. Cordella Antimicrobial treatment of textiles and decorative materials for passenger transport and car-sharing concepts S. 29-42

„… Antimicrobial treatment of textiles and decorative materials for passenger transport and …” „… Abstract Studies have shown that textile surfaces and decorative materials are very quickly attacked by …” „… with the environment are usually materials of synthetic or natural origin. Examples are textile fiber …”

D. Degenhardt, L. Greve Elasto-viscoplastic temperature-dependent material model for a talc-filled PP/PE copolymer S. 57-76

„… Elasto-viscoplastic temperature-dependent material model for a talc-filled PP/PE copolymer …” „… crash-relevant phenomena of unreinforced polymers a temperature- and rate-dependent material model with a …” „… hypo-elastic formulation has been implemented on the basis of the modular material model (MMM) of Volkswagen …”

T. Bröker, N. van Riel, G. Slik, Berend Hoek 30% weight savings and process improvement with a new ABS-LGF alloy material replacing metal for an instrument carrier, enabling a high dimensionally stable part S. 533-552

„… worked in close cooperation for function-oriented material development to be able to optimize the …” „… . Fig. 2 shows the result of the stiffness comparison at 85ºC as a function of the material density for …” „… 30% weight savings and process improvement with a new ABS-LGF alloy material replacing metal for …”

M. Haverkamp Multisensory appearance of traditional and innovative surfaces – Optimal design for all senses S. 471-490

„… are characterized by innovative materials, by extended or switchable functionalities and by flexible …” „… functional auditory feedback, touch sounds also support the perceived reliability of the function. Although …” „… surfaces will face major enhancement by including a variety of functions. Multifunctional surfaces in …”

C. Gundlach, S. Hartwig, M. Mannig, K. Dilger, M. Menzel, P. Lück Application of a hybrid test specimen for designing potting compounds in automotive electric-drive motors S. 201-216

„… functional integrated design solutions. DGM Hybrid Materials and Structures Proceedings, 2018, pp. 48-55 [2 …” „… , Isenbüttel Abstract In the case of material selection problems in development projects …” „… , investigations of test specimens are used for the preselection of suitable materials or combinations of …”

S. Krömer Innovative processing of glass fiber grids in the injection-molding process S. 349-360

„… The concept of lightweight construction can be defined as the resource-efficient use of materials to …” „… meet design and strength-determining requirements. Here intelligent combinations of materials and …” „… addition to the lightweight construction materials available on the market (for example, organosheet …”

M. Trenktrog, C. Massonet, J. Ludwig, D. Backes Design and validation of functionally integrated interior components for energy-efficient vehicle cabin heating S. 233-254

„… account, which require a compromise in the choice of materials for the system components. In …” „… , although a material constant, can still be influenced within certain limits by the manufacturing process …” „… considerations will show that safety-relevant requirements restrict the material selected for the heating …”

doi.org/10.51202/9783181023433

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Results (193)

Spritzgießen 2016

Improving the robustness of the finite cell method for problems with large deformations

International Conference on Gears 2023

Interactions between enzymes and oxide colloidal particles and their influence on enzymatic activity

International Conference on Gears 2019

Partitioned Fluid-Structure Interaction Simulation of Maritime Applications

The hierarchical finite cell method for nonlinear problems: Moment fitting quadratures, basis function removel, and remeshing

Kunststoffe im Automobilbau 2016

Plastics in Automotive Engineering 2016

Partitioned solution strategies for electro-thermo-mechanical problems applied to the field-assisted sintering technology

Autonomous Systems 2017

OPE Journal

Experimental testing and numerical simulation of granules as crash absorber for double hull structures

Reactor network synthesis with guaranteed robust performance

Plastics in Automotive Engineering PIAE EUROPE