This paper reports on the results of a numerical study to simulate response carbon fibre reinforced polymer (CFRP) retrofitted steel plates applied blast loads using finite element software, LS-DYNA. The simulation were validated against plate and magnitude deformation obtained from previous experiments. uniform load was generated in experiment by detonating cylindrical charge down end square t...

1569-190X/$ see front matter 2011 Elsevier B.V doi:10.1016/j.simpat.2011.10.009 ⇑ Corresponding author. Address: Laboratoire de M 42 27; fax: +33 (0) 4 91 16 44 81. E-mail address: [email protected] (A. Mau This paper describes investigations realised to perform simulations of shoulder milling operations on AISI 304L stainless steel using the commercial software LS-Dyna . A Lagrangian form...

Mesh convergence is a vital issue that needs to be addressed in numerical model. This study investigated the effects of mesh element number on Discrete Element Method (DEM) granite rock response under compression loading. used 3D finite-element code LS-DYNA model Unconfined Compression Test (UCT) simulation. Models with five different types were conducted for mesh, namely normal fine super coar...

Laser Shock Processing (LSP) is an innovative surface treatment technology. LSP can induce compress residual stress layer in the surface of metallic materials, which is used for improving the fatigue life. In this study, the propagation course of typical laser shock wave in material was analyzed according to the theory of plasticity dynamics and the theory of stress wave. The effects of laser s...

The LS-DYNA nonlinear finite element analysis software package developed for structural analysis by the Livermore Software Technology Corporation (LSTC) is widely used by the automobile, aerospace, construction, military, manufacturing, and bioengineering industries. Fujitsu has been a partner with LSTC since 1996, supporting customers in Japan. A common application of LS-DYNA is car crash simu...

Weighted deduction with aggregation is a powerful theoretical formalism that encompasses many NLP algorithms. This paper proposes a declarative specification language, Dyna; gives general agenda-based algorithms for computing weights and gradients; briefly discusses Dyna-to-Dyna program transformations; and shows that a first implementation of a Dyna-to-C++ compiler produces code that is effici...

A two-dimensional (2-D) explicit dynamics finite element (FE) model of a rolling element bearing was solved using a commercial FE software package, LS-DYNA. It was found that the modelled bearing vibration signals contain a significant amount of numerical noise. This paper provides an explanation of the physical mechanism by which the numerical noise is generated. The noise frequencies were ana...

Numerical simulation of cracked structures is an important aspect in structural safety assessment. In recent years, there has been an increasing rate of development of numerical codes for modeling fracture procedure. The subject of this investigation is implementing automated fracture models in the DYNA3D nonlinear explicit finite element code to simulate pseudo 3-D crack growth procedure. The ...

0167-6636/$ see front matter 2009 Elsevier Ltd doi:10.1016/j.mechmat.2009.09.009 * Corresponding author. Address: University of Ca Mechanical and Aerospace Engineering, 4909 Eng 9500 Gilman Drive, La Jolla, CA 92093-0416, USA. T E-mail address: [email protected] (S. Nemat-Nasser). Results of computationalmodeling and simulation of the response ofmonolithicDH-36 steel plates and bilayer steel-polyure...

Weighted deduction with aggregation is a powerful theoretical formalism that encompasses many NLP algorithms. This paper proposes a declarative specification language, Dyna; gives general agenda-based algorithms for computing weights and gradients; briefly discusses Dyna-to-Dyna program transformations; and shows that a first implementation of a Dyna-to-C++ compiler produces code that is effici...