摘要
基于虚拟仿真研究分析了某城市运动型多用途汽车(SUV)悬架下控制臂疲劳寿命问题,结合三维模型建立整车刚柔耦合动力学模型,利用该模型得到悬架下控制臂力载荷谱以及实际行驶工况下的极限载荷。建立悬架下控制臂有限元模型,以整车极限工况载荷建立下控制臂的边界约束,并运用模态分析证实了模型的可靠性。基于统计分析力载荷谱和Miner累计损伤法则,在疲劳分析软件Ncode中分析计算得到下控制臂的疲劳寿命云图与损伤云图,结果表明,某城市SUV悬架下控制臂的总寿命为4.78×105h,满足使用要求。
Based on virtual simulation research,the fatigue life of the suspension lower control arm of an sport utility vehicle(SUV)in a certain city is analyzed.A three-dimensional model is used to establish a rigid flexible coupling dynamic model of the entire vehicle.The load spectrum of the lower control arm under the suspension and the ultimate load under actual driving conditions are obtained using this model.The finite element model of the control arm under suspension is established,and the boundary constraint of the control arm is established by the load of the vehicle in the ultimate condition.Based on statistical analysis of force load spectrum and Miner cumulative damage rule,the fatigue life and damage cloud maps of the lower control arm are analyzed and calculated in the fatigue analysis software Ncode.The results show that the total life of the lower control arm of a certain city SUV suspension is 4.78×105 h,which meets the requirements of use.
作者
张东旭
徐小彬
ZHANG Dongxu;XU Xiaobin(School of Automotive and Transportation,Shenyang Ligong University,Shenyang 110158,China;EDAG Vehicle Design Company Limited,Shenyang 110115,China)
出处
《汽车实用技术》
2024年第4期49-53,共5页
Automobile Applied Technology
作者简介
张东旭(1997-),男,硕士研究生,研究方向为悬架控制臂设计,E-mail:zhangdx0502@sina.com。
