发动机悬架热固耦合计算与结构优化

Thermal Structure Coupling Calculation and Structure Optimization of Engine Suspension

发动机悬架是汽车动力总成最重要的零件之一,其质量和强度会影响汽车整体性能。针对悬架的强度较弱、质量较大的问题,以某品牌汽车的发动机悬架为研究对象,利用有限元方法得到悬架的热变形和热应力情况。通过优化设计模块对悬架进行多目标优化,在减小了热应力大小的基础上悬架质量降低了10%,实现了轻量化设计。

Engine suspension is one of the most important parts of automotive powertrain,its quality and strength will affect the overall performance of the vehicle.In view of the weak strength and high quality of the suspension,this paper takes the engine suspension of a certain brand automobile as the research object,and obtains the thermal deformation and thermal stress of the suspension by using the finite element method.The multi-objective optimization of the suspension is carried out through the optimization design module.On the basis of reducing the thermal stress,the suspension weight is successfully reduced by 10%,and the lightweight design is realized.