摘要
在轿车防撞梁轻结构优化问题的研究中,以国内某轿车前保险杠为研究对象,对保险杠防撞梁在低速碰撞和高速碰撞两种工况下的轻量化结构强度进行了研究。根据正面碰撞的要求及汽车保险杠的结构尺寸,在CATIA中建立了碰撞体及保险杠的有限元模型,用Hypermesh对模型做了前处理,用LS-DYNA求解器进行求解,最后用Hyperview和Hyper Graph进行后处理,并对仿真结果进行分析。结果表明:铝合金及高强度钢板防撞梁的轻量化及安全性能较原模型均有明显改善,且铝合金防撞梁轻量化程度最高,吸能量最大,加速度峰值最小,满足防撞轻量化和安全性的要求。
Based on the dynamic finite element theory, the lightweight structure of the bumper in the low speed impact condition is studied. According to the requirements of 100% frontal impact and the structure size of the bumper, the finite element model of the impact body and bumper is established by CATIA. The model is pre-processed by using Hypermesh, and the LS-DYNA is used to solve the model. Finally, the Hyperview and HyperGraph are used to analyze the results. The results show that the lightweight and safety performance of the aluminum alloy and high strength steel plate are obviously improved compared with the original model, and the aluminum alloy has the highest degree of light weight and energy absorption, and the maximum acceleration peak is minimum.
出处
《计算机仿真》
CSCD
北大核心
2016年第7期205-209,284,共6页
Computer Simulation
基金
重庆市教委科学技术研究项目(KJ1104004)
关键词
防撞梁
轻量化
安全性能
优化设计
Bumper beam
Lightweight
Security
Optimization design
