摘要
针对汽车侧门的开关耐久性能,建立了基于瞬态响应的侧门开关疲劳仿真方法。采用Abaqus/Explicit直接积分法对侧门进行瞬态响应分析,得到了侧门在关闭过程中的应力应变历程;基于Ncode焊点S-N及钣金E-N曲线,通过Miner线性累积原理,得到了多次循环下的损伤结果及风险位置。与实验加速度进行相关性分析,改善了侧门关闭过程模拟精度。与开关疲劳实验结果对比,验证了该方法的合理性。并对侧门进行优化改进,最终通过了实验验证。
A finite element method based on transient response was established to evaluate slam durability of the automobile door.According to the Abaqus/Explicit direct integration method,the door was dynamically simulated using direct integration method,and the time history of the door’s closing stress and strain was obtained.Based on the Ncode welding spot S-N and sheet metal E-N curves,and the Miner linear cumulative theory,the fatigue result and the risk position of the door was predicted through multiple cycles’tests.The simulation accuracy of the door closing process was improved by carrying out the correlation analysis of test acceleration.Compared with slam fatigue test results,the rationality of this method was verified.And further,the door was optimized and improved,and finally passed through the test.
作者
鄢子超
孟凡亮
周鸣昊
余庆超
YAN Zichao;MENG Fanliang;ZHOU Minghao;YU Qingchao(Chery Automobile Co.,Ltd.,Wuhu 241009,China)
出处
《应用科技》
CAS
2020年第4期106-110,共5页
Applied Science and Technology
作者简介
通信作者:鄢子超,男,分析师,E-mail:yanzichao@mychery.com;孟凡亮,男,主任分析师
