AN APPROACH FOR TENSION INSTABILITY IN SMOOTHED PARTICLE HYDRODYNAMICS (SPH)

被引：183

作者：

DYKA, CT ^{[1
]}

INGEL, RP ^{[1
]}

机构：

[1] USN,RES LAB,WASHINGTON,DC 20375

来源：

COMPUTERS & STRUCTURES | 1995年 / 57卷 / 04期

关键词：

D O I：

10.1016/0045-7949(95)00059-P

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Smoothed particle hydrodynamics (SPH) has the potential to be an important method for structural analysis. However, the SPH method is currently plagued by tension instability. In this work, a new unconventional approach is introduced, in which the stresses are calculated at points other than the SPH nodes, to address this difficulty. This algorithm is implemented into a one-dimensional (1D) program called SPH1D. In addition, objective stress rate calculations are discussed and specialized to 1D applications. The results from applying the unconventional approach to a simple bar are very encouraging. The bar holds together in tension and compares quite well to a finite element analysis.

引用

页码：573 / 580

页数：8

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