基于虚拟迭代的轿车车身耐久性虚拟试验方法  

Virtual test method of car body durability based on virtual iteration

作　　者：吴泽勋[1] 张林波[1] 孟凡亮[1] 陈玉发[1] 

机构地区：[1]奇瑞汽车股份有限公司汽车工程技术研发总院,安徽芜湖241009

出　　处：《计算机辅助工程》2014年第6期37-40,共4页Computer Aided Engineering

摘　　要：针对轿车车身开发过程中传统耐久性试验周期长、费用高且不容易在开发前期暴露风险的问题,采用虚拟试验方法,基于实测道路载荷谱并结合多体动力学及有限元仿真技术进行车身疲劳寿命预测.仿真结果与实测应变片台架试验结果一致性很好.该方法能够快速反映风险,大幅缩短开发周期、降低费用.As to the long cycle and high cost of the traditional car body durability test and the issue that it is difficult to expose the risk in the early development phase, based on the measured road load spectrum, a virtual durability test method is used to perform the car body fatigue life prediction by multi- body dynamics and finite element simulation technique. The simulation results are in good consistence with that of bench test with stress gauge measurement. The method can reflect the risk quickly and decease the development cycle and cost.

关 键 词：汽车 车身 虚拟迭代 载荷谱 相对损伤 疲劳预测 台架试验 优化 

分 类 号：U463.821[机械工程—车辆工程]