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A constitutive equation for the aging of elastomer and application to dummy impact programs
A constitutive equation for chronorheologically simple materials that describes the aging and viscoelastic behaviors of elastomer is presented. A simulated numerical uniaxial relaxation test of a material at various aging stages has ...
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2011 Europäische LS-DYNA Konferenz
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A new advanced Visco-eleastoplatic eight chain rubber model for LS-DYNA
A new advanced eight chain rubber model has recently been implemented in LS-DYNA. The material is tailored for polymeric materials. The basic theory is taken from Arruda’s thesis from 1993 but it has been enhanced with advanced ...
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2011 Europäische LS-DYNA Konferenz
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Simulation of Shock Wave Mitigation in Granular Materials by Pressure and Impulse Characterization
The detonation of an explosive charge has two major effects, blast wave generation and fragmentation. New technologies of energy dissipation, based on granular materials, seem to have good shock attenuation capabilities. Plastic ...
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Shock Wave Effect on Aluminium Foam
The behaviour of aluminium foam under impact loading conditions and especially the shock wave propagation are still not well understood. The shock wave propagation through the cellular material structure under impact loading ...
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Using LS-DYNA MM-ALE capabilities to help design a wall mitigating accidental blast effects
A solution had to be found in order to protect buildings neighboring an industrial site from the blast effects of possible accidental explosions on the site. One of the main issues was that the point of detonation would occur ...
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Influence of HE shape on blast profile
This paper is concerned by the effect of HE geometry on the shape of the blast wave. The aim of this work is to increase the knowledge on pressure profile generated by blast wave so as to optimize the design of explosion chambers. ...
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A New Method for CrachFEM "Damage" Parameter Calculation & Transfer from Autoform to LS-Dyna
This talk introduces into the statement of the issue as well as the technical solution. It presents an example and concludes with a summary.
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Statistical Analysis of Process Chains: Novel PRO-CHAIN Components
The robustness of production processes and the quality of resulting products suffer from variations in important material and process parameters, geometry and external influences, which can have substantial and critical influences. ...
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Deep drawing simulation of α- titanium alloys using LS-DYNA
Titanium alloys have excellent properties for their target applications; however their use is still limited by high price and formability issues. To avoid extensive on-site trials and to cut development costs, a numerical simulation ...
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Analysis of formability of advanced high strength steel sheets with phenomenologically based failure criteria with separate treatment of instability, shear and normal fracture
Despite their wide application in sheet metal forming analysis, Forming Limit Diagrams cannot supply reliable results for the cases involving non-proportional strain paths or material classes with reduced ductility such as advanced ...
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