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

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Christian Woitzik

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

Reihe: Mechanik/Bruchmechanik

Band 356 2021

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Numerical investigation S. 88-112

„… 6 Numerical investigation After obtaining the experimental results, the modelling of the collision …” „… Section 2.1. A brief overview over some of the numerical results for Experiment 1 to 4 is presented in …” „… [72]. An explicit time integration method is applied – which is a common choice for crash and impact …”

Introduction S. 1-5

„… granules will be carried out, followed by a numerical study to describe the mechanical behaviour. In the …” „… commercial FEM tools that are used as standard tools in industry. The numerical methods and material models …” „… sufficiently evaluated with numerical methods in a fairly easy manner. Thus, new designs, such as X-Core …”

Constitutive equations and numerical implementation S. 6-23

„… 2 Constitutive equations and numerical implementation This chapter serves to summarize the …” „… element method. The governing equations and the numerical implementation are shown in the next section …” „… Constitutive equations and numerical implementation referred to as plastic flow. Here, plastic strains arise …”

Bibliography S. 119-136

„… numerical simulation to analyze ship collision, in: International Conference on Collision and Grounding of …” „… [24] J. Amdahl, D. Kavlie, Experimental and numerical simulation of double hull stranding, in: DNV-MIT …” „… . Ringsberg, E. Johnson, M. Hoseini, A. Ulfvarson, Experimental and numerical investigation of bulb impact …”

Determination of bulk particle properties S. 40-63

„… conducted. This approach is called direct identification [137]. On the other hand, a numerical optimization …” „… identification. Due to the approach of a direct parameter identification, followed by a numerical correction …” „… Simulations Figure 4.1: Schematic view of experimental and numerical relations between the different tests and …”

doi.org/10.51202/9783186356185

Marcel König - Partitioned Solution Strategies for Strongly-Coupled Fluid-Structure Interaction Problems in Maritime Applications

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Marcel König

Partitioned Solution Strategies for Strongly-Coupled Fluid-Structure Interaction Problems in Maritime Applications

Reihe: Mechanik/Bruchmechanik

Band 351 2018

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Bibliography S. 252-266

„… numerical dissipation for time integration algorithms in structural dynamics”. In: Earthquake Engineering …” „… flow around aircraft”. In: Proceedings of the 3rd International Workshop on Numerical Modelling in …” „… Aerospace Sciences. Bucharest, Romania, 2015. [2] A. Aitken. “On Bernoulli’s numerical solution of algebraic …”

Fluid Problems S. 5-24

„… ) Apparently, the numerical integration of the surface and the volume integrals require the evaluation of the …” „… different numerical methods for their solution. First of all, we derive the Navier-Stokes equations in a …” „… , especially with a view to maritime applications, are of notable interest to engineers. For the numerical …”

Conclusions and Outlook S. 241-251

„… that the proposed solution procedure is very well suited for the numerical treatment of …” „… discretization schemes for their numerical treatment. Following this, we presented a generic partitioned …” „… allows to use different numerical schemes for the discretization of space and time in each of the …”

Benchmark Problems S. 158-217

„… 6 Benchmark Problems In this chapter, we present several numerical examples in order to verify and …” „… benchmark definition, the time step size is changed to Δt = 0.1 s, and the structural time integration …” „… three-dimensional cavity at time t = 24.7 s. radius ρ∞ = 0.9 to reduce numerical damping as compared to the …”

Introduction S. 1-4

„… numerical treatment. Following that, we outline the integration of the subproblems into the partitioned …” „… be prohibitively expensive or impossible. Numerical simulations have therefore evolved as an …” „… computational processing power, numerical simulations of even very complex phenomena have become feasible and …”

Structural Problems S. 25-41

„… finite element method (FEM) for the efficient numerical analysis of the problem. If the body undergoes …” „… numerical methods for their solution in Section 3.2. 3.1 Deformable Body Equations To study the dynamic …” „… amenable to a numerical analysis, we transform the strong form of the equilibrium equations into a weak …”

Advanced Applications S. 218-240

„… particular interest. Substantiated by the results obtained in these numerical studies, it is demonstrated …” „… wind energy offshore. For the numerical studies conducted in this work, a constant density ρa = 1.2 …” „… summarizes the mass properties of the individual components of the floating OWT. For the numerical analysis …”

Titelei/Inhaltsverzeichnis

„… Discretization and Numerical Solution . . . . . . . . . . . . . . . . 14 2.2 Potential Flow Equations …” „… Discretization and Numerical Solution . . . . . . . . . . . . . . . . 23 3 Structural Problems 25 3.1 Deformable …” „… . . . . . . . . . . . . . . . . . . . . . . . . . . 124 5.4.4 Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 5.5 …”

Software Library comana S. 98-157

„… Points_ }; static constexpr std::size_t localSpaceDimension { 2 }; using IntegrationPoint …” „… = Comana::IntegrationPoint; using IntegrationPoints = Array<IntegrationPoint, numberOfIntegrationPoints>; static const …” „… IntegrationPoints & getIntegrationPoints() noexcept; }; An IntegrationPoint combines the coordinates of the sampling …”

Coupled Problems S. 42-97

„… formulated in a manner that allows for a seamless integration into the generic partitioned solution procedure …” „… interpolation schemes are chosen for all the numerical examples presented in Chapter 6 and 7. The interpolation …” „… procedure will certainly result in an unacceptably high numerical effort. It is therefore advisable to …”

doi.org/10.51202/9783186351180

VDI Wissensforum GmbH - Plastics in Automotive Engineering 2017

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VDI Wissensforum GmbH (Hrsg.)

Plastics in Automotive Engineering 2017

Reihe: VDI-Berichte

Band 4348 2017

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P. Hörmann, K. Bornemann, F. Flueggen, H. Herten, V. Hohm, T. Ströhlein Lightweight design at Volkswagen S. 203-214

„… , numerical validation and final experimental testing for the development of a so-called FRP door sill tube …” „… context of a validated numerical design. These requirements differ significantly from those of the …” „… testing in a drop-tower rig and a real car crash. The FRP material was characterized for numerical …”

A. Liebsch, R. Kupfer, M. Gude, P. Müller, N. Andricevic Hollow profiles, organo-sheets and LFRT node structures: hybrid components made of fiber-reinforced plastics for automotive serial production S. 215-226

„… . Additional functionalization with injection-molding compound allows the integration of highly complex rib …” „… . Experimental and numerical investigations into overmolding hollow profiles The deepening and expansion of the …” „… , the 'Dresden rocket' The numerical mold-filling simulations were carried out with AUTODESK MOLDFLOW …”

doi.org/10.51202/9783182443483

Christian Redepenning - Pinch-based Methods for Absorption and Extraction Process and Solvent Screening

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Christian Redepenning

Pinch-based Methods for Absorption and Extraction Process and Solvent Screening

Reihe: Verfahrenstechnik

Band 955 2018

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Software S. 137-142

„… the shortcut methods. This shortcoming prior to this thesis probably prevented the robust integration …” „… , expandability, as well as numerical efficiency. New interfaces, new prototypes, and new frontends added as part …” „… communication with the numerical routines module and continuation algorithm module. The numerical routines …”

Bibliography S. 173-198

„… ). Numerical continuation, and computation of normal forms. In B. Hasselblatt, & A. B. Katok (Eds.), Handbook …” „… ., Grossmann, I. E., & Miller, D. C. (2015). Simultaneous process optimization and heat integration based on …” „… ., & El-Halwagi, M. (2002). Property integration— a new approach for simultaneous solution of process and …”

Recommendations for further research S. 143-156

„… concepts. General-purpose numerical algorithms can provide such a general solution concept. Local …” „… investigation of the performance of such a concept which is based on general-purpose numerical algorithms. The …” „… correlations. The integration of transport limitations increases the complexity of the separation model which …”

Introduction S. 1-20

„… exploit all potentials to be competitive, including sophisticated methods of heat integration …” „… integration (level 5). Between the low and the high level, each additional level shows more and more details …” „… : separation devices Level 5: heat-integration Figure 1.3.: Hierarchical framework of Douglas (1985 …”

Pinch-based solvent screening for absorption and extraction processes S. 90-136

„… recovery column. The evaluation of additional units, heat integration, or optimization of the operating …” „… for heat integration, rectification, absorption, and extraction perfectly complement. All interactions …” „… absorption-rectification process. Several thousands of solvents are screened and heat integration as well as optimization …”

Pinch-based shortcut method for the design of isothermal extraction columns S. 59-89

„… refers to the existence of the pinch point. Consequently, integration of accurate pinch modeling has the …” „… basic shortcut model with an appropriate numerical solver can be attempted directly. If no solution is …”

doi.org/10.51202/9783186955036

VDI Wissensforum GmbH - Kupplungen und Kupplungssysteme in Antrieben 2021

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VDI Wissensforum GmbH (Hrsg.)

Kupplungen und Kupplungssysteme in Antrieben 2021

Reihe: VDI-Berichte

Band 2382 2021

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R. Leister, J. Kriegseis, B. Frohnapfel, D. Gatti, A. F. Najafi Analytical modeling and dimensionless characteristics of open wet clutches in consideration of gravity S. 129-144

„… present work. In general, the flow system can be addressed with analytical, numerical or experimental …” „… flow as yet was mostly obtained via numerical analysis such as [17,19]. Different groove designs were …” „… technique of numerical analysis inherently is in need of appropriate fluid flow models and the …”

D. Groetsch, K. Voelkel, H. Pflaum, K. Stahl Echtzeit-Temperaturberechnung und Temperaturprädiktion nasslaufender Lamellenkupplungen S. 115-128

„… statistical evaluation. The development of the model in Matlab/Simulink enables the integration of the model …” „… /j.icheatmasstransfer.2015.12.026. [11] Le Li, Li, H., and Wang, L., “Numerical analysis of dynamic characteristics of …” „… , doi:10.1016/j.applthermaleng.2018.03.016. [16] Yu, L., Ma, B., Li, H., Liu, J. et al., “Numerical …”

doi.org/10.51202/9783181023822

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