摘要
在车辆碰撞仿真实际应用中 ,计算的精度和时间是一对不可调和的矛盾 ,而网格密度的划分对这两者有着极为显著的影响 笔者以有限元显式中心差分法为理论基础 ,定量分析了有限元网格密度划分对计算精度的影响 ,并推导了计算效率随网格密度的变化关系 ,说明网格划分并非越细越好 ,最后通过一个实际模型的仿真计算加以验证结论的正确性
The precision and time of calculation are in pungent contradiction for practical application of automobile crashing simulation. The meshing density has great influence on them. The influence of finite element meshing on the precision of calculation result is presented in this paper and the relation between precision of calculation and density of meshing is also derived by the method of apparent center difference. It is concluded that it is not better when the meshing is denser. A simulated model is calculated to show the accuracy of conclusion.
出处
《江苏大学学报（自然科学版）》
EI
CAS
2002年第4期29-33,共5页
Journal of Jiangsu University：Natural Science Edition
基金
国家机械局基金资助项目 ( 97QK0 0 33)
