碳纤维麦弗逊悬架控制臂铺层优化

Optimization of Control Arm Laying of Carbon Fiber McPherson Suspension

根据3种极限工况的悬架硬点载荷,结合复合材料经典层合板理论和对称平衡的铺层设计方法,开展复合材料控制臂的纤维铺层角度设计,并使用OptiStruct软件以1个超级层关联4个单层铺层的方法进行铺层优化设计。进而通过拓扑分析的方法获得需要加强的区域,利用铺层尺寸优化方法对控制臂进行形貌优化设计,在满足使用要求的前提下实现较原金属结构减重64%。提出一种非均匀截面结构的铺层优化方法,对复杂截面复合材料结构铺层优化具有一定的指导意义。

According to the hard point load of suspension under three limit conditions,based on the classical laminate theory of composite materials and the laying design method of symmetrical balance,the fiber laying angle of composite control arm is designed,and the laying optimization design is carried out by using OptiStruct software to correlate four single layers with one super layer.Furthermore,the areas that need to be strengthened are obtained by the method of topology analysis,and the shape optimization design of the control arm is carried out by using the layer size optimization method,which can reduce the weight by 64%compared with the original metal structure on the premise of meeting the application requirements.A lamination optimization method for non-uniform cross-section structures is proposed,which has a certain guiding significance for the lamination optimization of composite structures with complex cross-sections.