某履带式装甲车辆铝合金车体结构仿真优化设计

Simulation and optimization design of aluminum alloy structure of a tracked armored vehicle

为分析某型履带装甲车辆车体结构在不同射击工况下应力、位移分布情况以及最大应力点的位置,采用Altair公司开发的HyperMesh软件建立了车体有限元模型,在2种典型射击工况下对装甲车辆车体进行静强度分析,并根据静强度计算结果对刚强度薄弱部位进行结构优化改进。工况1车体最大应力值为169.3 MPa,最大位移值为2.31 mm;工况2车体最大应力值为149.6 MPa,最大位移值为2.29 mm。2种工况较优化前最大应力值均减小约20%,位移值也有所减小,车体强度完全能够满足该型履带车辆射击工况下的使用要求。

In order to analyze the stress and displacement distribution of the structure and the position of the maximum stress point of a tracked armored vehicle under different firing conditions,this paper uses HyperMesh software developed by Altair to establish a finite element model of the armored vehicle body,and analyzes the static strength of the armored vehicle body under two typical firing conditions.According to the results of the static strength calculation,it optimizes and improves the weak parts of rigid strength.It is concluded that the maximum stress value of the vehicle body in working condition 1 is 169.3 MPa,and the maximum displacement value is 2.31 mm.The maximum stress value of the car body in working condition 2 is 149.6 MPa,and the maximum displacement value is 2.29 mm.Both the maximum stress values of the two working conditions reduce by about 20%,compared with that before the optimization.The displacement value is also reduced.The strength of the vehicle body can fully meet the requirements of this type of tracked vehicles under the shooting conditions.