CAJ | 학술논문

为了对悬架控制臂进行轻量化，并保证轻量化的悬架控制臂仍能满足动静态性能要求，采用了多目标拓扑优化的方法。首先以控制臂为柔性体在Adams/Car中建立悬架刚柔耦合模型并对该模型进行多体动力学分析，从而得到悬架控制臂在制动、转向及过凸包等极限工况时的边界条件；然后采用惯性释放的方法对悬架控制臂进行有限元静力分析及模态分析，并根据结果分析其动静态性能；再运用折衷规划法对该悬架控制臂进行多目标拓扑优化，并通过正交试验的方法确定目标函数的权重。最终得到的新控制臂模型重量比原模型降低18.1%，总体刚度及低阶频率都有提高，各极限工况应力均小于许用应力。结果表明，轻量化的悬架控制臂满足性能要求，验证了设计的合理性。
위료대현가공제비진행경양화，병보증경양화적현가공제비잉능만족동정태성능요구，채용료다목표탁복우화적방법。수선이공제비위유성체재Adams/Car중건립현가강유우합모형병대해모형진행다체동역학분석，종이득도현가공제비재제동、전향급과철포등겁한공황시적변계조건；연후채용관성석방적방법대현가공제비진행유한원정력분석급모태분석，병근거결과분석기동정태성능；재운용절충규화법대해현가공제비진행다목표탁복우화，병통과정교시험적방법학정목표함수적권중。최종득도적신공제비모형중량비원모형강저18.1%，총체강도급저계빈솔도유제고，각겁한공황응력균소우허용응력。결과표명，경양화적현가공제비만족성능요구，험증료설계적합이성。
To lightweight the suspension control arm and ensure it to meet the dynamic and static performance re-quirements, the multi-objective topology optimization method was adopted. Firstly, Adams/Car was used to estab-lish the rigid-flexible coupling model of suspension system and to get multi-body dynamics analysis. Therefore, the extreme boundary conditions of braking, steering and the convex hull were obtained. Then inertial release was used in finite element static and modal analysis, and dynamic and static performances analyzed according to the results. Finally, compromise programming approach was used to do multi-objective topology optimization, and at the same time, the optimization goal weight was determined by orthogonal test. Compared with the original model,the weight of the new model is reduced by 18. 1%, overall stiffness and low frequency are increased, and static stresses in all con-dition are still met. The result indicates that the lightweighted control arm meets the performance requirements. The design of control arm is verified.