利用Ls-Dyna计算结构准静态压溃的改进方法

IMPROVEMENT IN ANALYSIS OF QUASI-STATIC COLLAPSE WITH LS-DYNA

摘要: 在显式积分有限元分析软件Ls-Dyna平台上进行了薄壁管件的准静态压溃模拟计算. 为了减少计算时间，采取了提高准静态加载速度的方法. 通过对薄壁管件在不同加载速度下计算结果的分析比较，给出了确定加载速度提高范围的原则. 最后，对提高加载速度的方法与Ls-Dyna中的Mass Scaling方法进行了比较.

Abstract: Quasi-static collapse simulations of thin-wall-tubesare performed with Ls-Dyna code. To reduce the computational time,the speed of quasi-static loading is increased. Studies are conductedwith different loading speeds. A range of the load speed used for thesimulation is specified. This method is compared with MassScaling method integrated into Ls-Dyna.