高速动力车车体结构参数的优化

Optimization of Struetural Parameters of High Speed Power Car

本文在高速动力车车体轻型化结构设计及初步计算分析的基础上，以质量为目标函数，分别以等数（ＶｏｎＭｉｓｅｓ）应力和自振频率为约束条件对车体结构进行了优化设计。本文的工作表明，在保证车体强度和刚度的前提下，通过优化设计可使结构的力流传递更加合理，应力分布更加均匀，同时实现了高速动力车车体的进一步减重。

On the basis of design and numerical analysis of lihtening bedy of high speed power car,the optimization deeigning of the bedy is carried out under the constraints of stresses and frequencies using the body mass as the object function. The reeults show that the distribution of the force stream and stresses is more reasonable after optimization and the body weight can be further reduced without loss of body strength and stiffness.