动光弹性中的应力相似函数

在静态光弹性应力分析中将模型的应力换算成实际结构的应力并非困难,但是,在动态光弹性中模型的脚态应力如何还原为原型应力至今未能很好的解决,本文提出的应力相似函数,利用边界条件、动态方程和补助方程来确定相数函数的级数表达式中的各项系数,使模型的瞬态应力换算成实际结构相应点的瞬态应力成为可能。

STRESS SIMILITUDE FUNCTION IN DYNAMIC PHOTOELASTICS

It is not difficult to convert the model stress to the stress of prototype in tne analysis of static photoelastic stress. But with the dynamic photoelastic stress, especially the stress wave propagation, no satisfactory solution has been reported. This paper presents a new function the similitude function, in which the boundary condition, equation of motion and subsidiary equation are used to obtain different coefficiente. With this funetion the stress of structural prototypes can be converted frown the stress of dynamic photoelastics.