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The present work concerns the new capability of LS-DYNA® in solving acoustic and vibroacoustic problems. In vibroacoustic problems, which are assumed to be weak acoustic-structure interactions, the transient structural response is ...

LS-DYNA models for Implicit Mechanics are getting larger and more complex. We are continually seeing models where the linear algebra problems in Implicit Mechanics have 10M rows and know of at least one that is nearly 40M rows. We ...

A novel method for simulation of crack propagation has been developed in LS-DYNA. The method combines damage-driven fission adaptivity and element erosion or node splitting to simulate crack propagation in the finite element mesh. A ...

In an attempt to alleviate transverse shear locking in fully integrated hexahedra elements with poor aspect ratio, two new variants of solid element type 2 in LS-DYNA have been developed, implemented and tested on some critical ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...