摘要
将子模型技术应用于某微型车的强度计算,用应力恢复的方法获取子模型的边界条件,尔后,用子模型的实验结果验证了应力恢复方法的正确性。实验通过对子模型进行网格加密处理,确保了计算结果对于网格尺寸的收敛性。收敛性计算结果表明:子模型技术能获得车身关键受力区域的精确应力解,在保证计算效率的前提下提高了仿真精度,具有实际工程应用价值。
This paper applied the submodel technique on a mini--van for vehicle strength analysis. We introduced stress recovery approach to obtain accurate submodel boundary conditions, and the comparison between the results of submodel analysis and vehicle model analysis shows the credibility of the submodel approach. Then mesh refinement process was done on the submodel to guarantee the calculation converges over mesh size. Convergence analysis results show that with the ability of obtai ning the accurate solution for critical stress area, the submodel technique ensures computational effi- ciency and improves the simulation accuracy, which shows the high significance on engineering guid- ance of the submodel technique.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2013年第12期1671-1675,共5页
China Mechanical Engineering
基金
教育部长江学者与创新团队发展计划资助项目(531105050037)
国家重点基础研究发展计划(973计划)资助项目(2010B328005)
关键词
子模型
应力恢复方法
车身结构分析
仿真精度
计算效率
submodel
stress recovery
body structure analysis
simulation accuracy
computational efficiency
