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Brick versus shell elements in simulations of aluminium extrusions subjected to axial crushing
In previous published literature, deviations in the mean crushing force and deformation pattern have been found between simulations with plane stress shell elements and experimental results for aluminium extrusions ...
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2009 European LS-DYNA Conference
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4a impetus - efficient evaluation of material cards for non-reinforced and reinforced thermoplastics
LS-DYNA© has included plenty of material cards, each of them offering different scalability and complexity to describe the behavior of non- reinforced thermoplastics. The consideration of the strain rate behavior is included in many ...
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2009 European LS-DYNA Conference
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An inverse approach for material parameter identification in a cyclic bending test using LS-DYNA and LS-OPT
The residual stresses in the blank after forming are the main cause for the subsequent springback in a sheet forming operation. The accuracy of the predicted springback in a Finite Element simulation of the forming operation is very ...
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2009 European LS-DYNA Conference
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Adaptive Simulated Annealing for Global Optimization in LS-OPT
The efficient search of global optimal solutions is an important contemporary subject. Different optimization methods tackle the search in different ways. The gradient based methods are among the fastest optimization methods but the ...
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2009 European LS-DYNA Conference
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Desicion Making in Multi-Objective Optimization for Industrial Applications - Data Mining and Visualization of Pareto Data
Optimization of engineering structures where multiple (more or less conflicting) objectives are simulta- neously considered, is getting more and more attractive in automotive industries. They usually involve a large number of design ...
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2009 European LS-DYNA Conference
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Process Chain Forming to Crash: Efficient Stochastic Analysis
During the fabrication of products, important material and process parameters, geometry and also external influences (e.g. room temperature) can vary considerably. It is known that they can have a substantial, even critical influence ...
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2009 European LS-DYNA Conference
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Optimization study of a parametric vehicle bumper subsystem under multiple load cases using LMS Virtual.Lab and OPTIMUS
This paper deals with the design and optimization of a vehicle bumper subsystem, which is a key scenario for vehicle component design. More than ever before, the automotive industry operates inhighly competitive environment. ...
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2009 European LS-DYNA Conference
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Automated Metamodeling for Efficient Multi-Disciplinary Optimisation of Complex Automotive Structures
The use of multi-disciplinary optimisation methods (MDO) in the development process of complex automotive structures is often hindered by several problems. The required resources for very expensive simulations such as crash or 3D CFD ...
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2009 European LS-DYNA Conference
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Optimization and robustness of complex material model simulations with modeFRONTIER
Experimental quasi-static and dynamic tests were conducted over different types of advanced material samples, such as composite sandwich, in order to derive both mechanical and numerical input parameters for LS-DYNA material models. ...
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2009 European LS-DYNA Conference
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Variable Complexity Modeling for Speeding Up Multi- Run-Design-Tasks with Computationally Expensive Simulations
Optimization and the improvement of robustness and reliability in the early stages of the product development is often attempted today using simulation methods together with algorithms that run these simulations in an automated ...
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2009 European LS-DYNA Conference
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