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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

Series: Mechanik/Bruchmechanik

Volume 356 2021

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

„… 3 Selection of granules and description of single grains The main emphasis of this chapter is on …” „… the granules. The first section deals with the choice of granules. After applying the given …” „… requirements, the focus will be on the second section. There, a reduced amount of granules are investigated in …”

Numerical investigation S. 88-112

„… experiments are modelled and simulated using two different material models for the granules, as described in …” „… of granules can be used to reduce the double hull width without decreasing the energy dissipation …” „… double hull structure and 147000 elements for the granules. Due to the nonsymmetric rupture of the plates …”

Experimental investigation S. 64-87

„… 5 Experimental investigation In order to evaluate the granules as a filling material, a …” „… . Further, the inner structure was simplified and a closed box for the granules was created [106]. The next …” „… benefits of using granules. Thus, two empty and two filled experiments are performed. The last three …”

Conclusions and Outlook S. 113-115

„… granules as a filling material for double hull stuctures. The investigation began with the identification …” „… parameters in a parallel thesis. On the other hand, the bulk behaviour of the granules was determined. A …” „… granules. This served to identify suitable materials and to optimize and validate the obtained material …”

Introduction S. 1-5

„… 1 Introduction Granules are a popular material in modern industry. They combine features such as …” „… applications: in civil engineering – where granules are used as a material for insulation, levelling, or as a …” „… of the dissipative behaviour of granules, they are also used for crash absorption purposes. All the …”

Titelei/Inhaltsverzeichnis

„… Fortschritt- Berichte VDI Experimental testing and numerical simulation of granules as crash …” „… simulation of granules as crash absorber for double hull structures M.Sc. Christian Woitzik, Hamburg NR …” „… testing and numerical simulation of granules as crash absorber for double hull structures …”

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 …” „… compression used in the previous chapter for the selection of granules. In this inverse problem, the …” „… quantities [137, 138]. In addition to the tests needed to characterize the granules, it is necessary to …”

Material parameter identification S. 116-118

„… Mohr-Coulomb material model for Danamol : total force applied (left) and force transmitted through the granules …” „… through the granules (right). 118 …”

Constitutive equations and numerical implementation S. 6-23

„… constitutive equations describing the material behaviour. Two different models are used for the granules: on …” „… angle. In granules, a similar relationship holds. The yielding occurs if a critical combination of shear …” „… shear the granules [84, 61]. The criterion can be expressed in a plot of Mohr’s circle for different …”

Bibliography S. 119-136

„… of granules as crash-absorber in ship building, Ships and Offshore Structures 16 (3) (2020) 314–325 …” „… . Düster, P. Wriggers, A multiscale DEM–FEM coupled approach for the investigation of granules as …” „… granules, Computational Particle Mechanics 5 (3) (2018) 297–312. doi:10.1007/s40571-017-0169-0. [117] M. A …”

doi.org/10.51202/9783186356185

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VDI Wissensforum GmbH (ed.)

Automation 2019

Series: VDI-Berichte

Volume 2351 2019

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A. Elkhashap, D. Abel, R. Meier Modelling and Control of a Continuous Vibrated Fluidized Bed Dryer in Pharmaceutical Production S. 159-174

„… different process variables (e.g. drying air temperature, air mass flow, conveying speed of the granules …” „… ) VDI-Berichte Nr. 2351, 2019 161 The VFBD is feed with the wet granules, which are transported …” „… air stream. The hot air flows in the cross direction of the granules flow approaching the moist …”

doi.org/10.51202/9783181023518

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VDI Wissensforum GmbH (ed.)

PIAE EUROPE

2020

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T. Stier, N. Lammert, C. Heinz, N. Unger Additive manufacturing based on screw extrusion: machines, material and applications in the automotive industry S. 181-196

„… series-production-qualified injection-molding granules and an automated 6-axis robot system, the SEAM process is able to …” „… material on the market, including granules with a high percentage of fiber reinforcement, the material …” „… fused-layer modeling (FLM) processes. Acromide is also available in granule sizes of 1 mm x 1 mm to improve …”

F. Vetter Emissions and odor under control – Thermoplastic elastomers for the vehicle interior S. 149-164

„… measurements being carried out on plastic granules, sample panels, individual components or component groups …” „… various raw materials measured with the granules according to ISO 12219-3 Test ISO 12219-3 …” „… materials measured with the granules according to VDA 278, DIN 75201-B and VDA 270 B-3 Test VDA 278 DIN …”

S. Schmitz, D. Fischer Radiation cross-linking of plastics as a finishing process in series production S. 197-206

„… can be added during the production of the plastic granules (compounding) or immediately before …”

doi.org/10.51202/9783181023693

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wt Werkstattstechnik online

Browse Volumes: wt Werkstattstechnik online

wt Volume 111 (2021) Issue 10 ISSN Online: 1436-4980

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No title S. 737

„… Hersteller Ecka Granules Germany GmbH, in den Stufen 825 µm, 875 µm und 950 µm modelliert. Es ergaben sich …” „… Verlag 1995 D A N K S A G U N G Die Autoren bedanken sich bei der Firma Ecka Granules Germany GmbH …”

Berend Denkena, Mateus Kostka, Alexander Krödel, Fabian Leander Kempf Mischanalyse in der Schleifscheibenherstellung/Mixing analysis in the grinding wheel production S. 735-739

„… Korngrößenverteilung, ermittelt durch den Hersteller Ecka Granules Germany GmbH, in den Stufen 825 µm, 875 µm und 950 …” „… Verlag 1995 D A N K S A G U N G Die Autoren bedanken sich bei der Firma Ecka Granules Germany GmbH …”

doi.org/10.37544/1436-4980-2021-10

VDI Wissensforum GmbH - PIAE Europe 2023

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VDI Wissensforum GmbH (ed.)

PIAE Europe 2023

Series: VDI-Berichte

Volume 2418 2023

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E. Spini, R. Galeazzi Reinforced polyamides with low environmental impact: post-consumer materials S. 627-644

„… a proper temperature, resulting in semi-finished PA66 granules ready to be used in the final …” „… possible to use the granules shown in figure 5 without further processing to produce the final …” „… , Italy-based SCAME SpA processed the recycled material (in the form of granules) into components. The company …”

doi.org/10.51202/9783181024188

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