受冲薄壁结构动力效应的显式有限元分析

被引：23

作者：

雷正保

钟志华

李光耀

刘振闻

罗云飞

机构：

[1] 长沙交通学院汽车系!长沙４１００７６

[2] 湖南大学机械与汽车工程学院!长沙４１００８２

来源：

力学学报 | 2000年 / 01期

关键词：

冲击; 薄壁结构; 动力效应; 有限元; 接触;

D O I：

暂无

中图分类号：

TU311.3 [结构动力学];

学科分类号：

081304 ; 081402 ;

摘要：

提出了一种计算受冲薄壁结构动力效应的显式有限元方法．采用退化四节点亮单元及快速可靠的接触搜寻法，运用基于Ｐｒａｎｄｔｌ－Ｒｅｕｓｓ塑性流动增量理论的等向强化弹塑性Ｓｙｍｏｎｄｓ应变率材料模型与合适的应力回映方法，可以准确地模拟受冲薄壁结构的动态过程．文中实例表明：已被广泛采用的Ｒｅｉｄ与Ｒｅｄｄｙ的针对薄壁圆管横向压缩中某些特殊情况而作的变形模式假设并不具有广泛适应性；对应变率敏感材料，应变率效应不仅影响受冲薄壁结构的变形特性，也影响其变形模式；此外，冲击过程中的惯性效应不容忽视．

引用

页码：70 / 77

页数：8

共 10 条

[1]

Numerical modelling of tube crush with experimental comparison. McNay Ⅱ GH. SAE Passenger Car Meetingand Exposition . 1988

[2]

Nonlinear finite element analysis of shells: Part Ⅰ. Three-dimensional shells. Hughes TJR,Liu WK. ComputerMethods in Applied Mechanics and Engineering . 1981

[3]

Structural crashworthiness. Jones N,Wierzbicki T. Lolldon: Butterworth . 1983

[4]

Zhong,Z. H. Finite Element Procedures for Contact-Impact Problems . 1993

[5]

Energy dissipation properties of laterally crushed tubes and tubular clusters. Carney Ⅲ J F,et al. SAE Passenger Car Meeting and Exposition, 880903 . 1988

[6]

A single surface contact algorithm for the post-buckling analysis of shell structures. Benson DJ,Hallquist JO. Computer Methods . 1990

[7]

Side-impact testing of race car sandwich panels. Browne A,Fuchs H,et al. Automotive Engineer . 1997

[8]

Collision properties of high speed craft. Aamlid O,Nilsson L,McGeoge D. Det Norske Veritas Research AS,Norway . 1993

[9]

Crush characteristics of thin-walled cylindrical tubing. Grimm TR,Minarecioglu SE,Viegelahn GL. SAEPassenger Car Meeting and Exposition, 880901 . 1988

[10]

A return mapping algorithm for plane stress elastoplasticity. Simo JC,Taylor RL. International Journal forNumerical Methods in Engineering . 1986

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