摘要
以某铝合金后副车架为研究对象,基于Hypermesh软件创建有限元模型并进行自由模态分析。基于Adams/car模块创建该汽车后悬架系统的多体动力学模型,求解不同工况下安装处的载荷并对后副车架进行强度分析。在后副车架满足强度、刚度要求并不产生共振的基础上,基于拓扑优化理论,对后副车架重新建模后进行结构轻量化设计。使得优化后的后副车架在强度、刚度、模态及疲劳寿命均符合要求的前提下,减重10.8%。该设计方法也为汽车底盘其他零件的开发提供了理论参考。
Taking an aluminum alloy rear subframe as the research object,the finite element model for free modal analysis is established by Hypermesh.Based on Adams/car module,the multi-body dynamic model of the vehicle’s rear suspension system is established to solve the load at the installation under different working conditions,and then the strength of the rear subframe is analyzed.On the basis that the rear subframe meets the requirements of strength,stiffness and without resonance,the finally structure lightweight design is performed on the rear subframe according to the topology optimization.The optimized rear subframe can reduce the weight by 10.8%on the premise that the strength,stiffness,mode and fatigue life meet the requirements.This method also serves as a theoretical foundation for developing and optimizing other components of automobile chassis.
作者
张凯
苏小平
周大双
ZHANG Kai;SU Xiaoping;ZHOU Dashuang(School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211816,China)
出处
《重庆理工大学学报（自然科学）》
CAS
北大核心
2022年第7期102-108,共7页
Journal of Chongqing University of Technology：Natural Science
基金
国家自然科学基金项目(52175465)。
关键词
后副车架
模态
强度
轻量化
拓扑优化
rear subframe
modal
strength
lightweight
topology optimization
