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High Explosive Impact Analysis using LS-DYNA

机译:使用LS-DYNA的高爆炸冲击分析

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摘要

In order to realize numerical simulation of fast transient events, some wave propagation codes, which allow studying the time resolved development of shock wave propagation due to penetration, and detonation, were developed. In this article, Eulerian Multi-material and Arbitrary Lagrangian Eulerian formulations are used. Both formulations have already been used with success in the simulation of fluid with large motion such as the tank sloshing modeling, the overdriven detonation or the simulation of metal cutting processes. This article describes an air-blast simulation using an explicit finite elements code LS-DYNA. The main aim of this investigation is to compare numerical results with experimental results in order to prove the abilities of Eulerian Multi-Material and ALE formulations to treat air-blast problem using an explicit finite element method.
机译:为了实现快速瞬态事件的数值模拟,开发了一些波传播代码,这些代码可以研究由于穿透和爆炸引起的冲击波传播的时间分辨发展。在本文中,使用了欧拉多材料和任意拉格朗日欧拉公式。两种配方都已成功用于大运动流体的模拟,例如油箱晃动建模,过驱动爆轰或金属切削过程的模拟。本文介绍了使用显式有限元代码LS-DYNA进行的爆炸模拟。这项研究的主要目的是将数值结果与实验结果进行比较,以证明欧拉多材料和ALE配方使用显式有限元方法处理空气冲击问题的能力。

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