计算物理 ›› 1998, Vol. 15 ›› Issue (4): 385-392.

• 论文 •    下一篇

一、二维弹塑性流体动力学数值计算的高精度新自由面格式

周南, 程漱玉, 陈雨生, 丁升   

  1. 西北核技术研究所, 西安 710024
  • 收稿日期:1995-07-05 修回日期:1998-03-05 出版日期:1998-07-25 发布日期:1998-07-25
  • 作者简介:周南,男,52,研究员,西安69信箱15分箱

A NEW AND ACCURATE FREE SURFACE SCHEME IN 1-D AND 2-D NUMERICAL CALCULATIONS OF ELASTIC-PLASTIC FLOW

Zhou Nan, Cheng Shuyu, Chen Yusheng, Ding Sheng   

  1. Northwest Institute of Nuclear Technology, Xian 710024
  • Received:1995-07-05 Revised:1998-03-05 Online:1998-07-25 Published:1998-07-25

摘要: 提出了适用于X射线或电子束辐照、爆炸和高速碰撞等问题的一、二维弹塑性流体动力学数值模拟计算的一种新自由面格式。对于X射线及电子束辐照材料与结构的热-力学效应的数值计算结果表明,该新自由面格式明显优于目前一直沿用的Richtmyer格式。从理论上证明了该新自由面格式具有三阶精度,而Richtmyer格式为一阶精度。

关键词: 弹塑性动力学, 辐照, 热-力学效应, 自由面格式

Abstract: A new free surface scheme for 1-D and 2-D numerical calculation of elastic-plastic flow is proposed to study e-beam or X-ray radiation,high velocity impact and blast.Some numerical examples given here show that the pressent free surface scheme is more suitable than Richtmyer's for solving thermal-mechanical effects of material subjected to e-beam or X-ray pulse radiation.It is proved that this scheme should give a third-order accuracy.

Key words: elastic-plastic flow, irradiation, thermal-mechanical effects, free-surface scheme

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