轮式自行高炮车体刚强度分析与结构优化

Stiffness analysis and structure optimization of a wheeledself-propelled anti-aircraft artillery vehicle

底盘是自行高炮火力炮塔的支撑平台,其车体刚强度会牵连火力炮塔安装座圈,对火炮的射击精度有重要影响。为减小底盘车体刚强度不足对火炮射击精度的影响,根据某轮式自行高炮底盘力学模型建立车体初始设计的有限元模型,对火炮的不同射击工况进行静力计算,找出了底盘车体在火炮不同射击工况下的薄弱环节和变形特征。针对底盘车体的薄弱环节和变形特征,对原方案进行了优化设计,最终得到了满足作战使用要求的设计方案。新方案与原方案相比,底盘质量虽略有增加,但底盘车体刚强度有了大幅提升,达到了设计指标要求,对自行高炮底盘车体的刚强度分析与优化设计具有一定参考意义。

A chassis is the support platform of the turret of a self-propelled anti-aircraft artillery vehicle,and the rigidity of its body is related to the turret mounting ring,which has an important impact on the firing accuracy of the artillery.In order to reduce the influence of insufficient rigidity of the chassis on the firing accuracy of the artillery,this paper establishes a finite element model of the initial design of the body according to the chassis mechanics model of a wheeled self-propelled anti-aircraft artillery vehicle,carries out the static calculation under different firing conditions of the artillery,and figures out the weak links and deformation characteristics of the chassis under different firing conditions.According to these weak links and deformation characteristics,the original scheme is then optimized,and finally the design scheme satisfying the requirements of combat is obtained.Compared with the original scheme,the weight of the chassis in the new scheme slightly increases,but its stiffness greatly improves,and the design index requirements are achieved,which provides certain reference for stiffness analysis and optimization design of the chassis of a self-propelled anti-aircraft artillery vehicle.