摘要
为保证管件液压成形动力显式有限元仿真的计算精度和提高计算效率,研究了虚拟加载时间对计算精度和计算效率的影响。以圆形截面零件的液压成形过程为例,通过计算结果与试验结果的比较确定了合理虚拟加载时间的设定准则,以不同虚拟加载时间条件下的系统能量分配来解释采用该准则的原因,用某型轿车副车架零件液压成形的动态仿真算例证明了该准则的有效性。
To ensure the calculation precision and efficiency of the tube hydroforming process when using the dynamic explicit FEM, the effect of the virtual loading time was taken into account herein. Firstly, based on a simple hydroformed part,a rule on how to determine a reasonable virtual loading time was obtained by comparing the deformation results between simulation and experiment, and then the reason why the rule introduced was explained by means of systemic energy allotment under different virtual loading time. And the validity of this rule is testified by using it in the simulation process of a hydroformed sub-frame part.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2007年第8期904-906,911,共4页
China Mechanical Engineering
关键词
管件液压成形
动力显式
虚拟加载时间
仿真
tube hydroforming
dynamic explicit
virtual loading time
simulation
