基于等效原理的板壳结构加强筋设计方法
Stiffener Design Method for Plates and Shells Based on Equivalence Principle

通过布置加强筋可以在零件材料成本不变的前提下有效提高板壳的结构刚度。为了能够获取加强筋布置的最佳方案,基于等效原理提出了一种新的板壳结构加强筋设计方法,此方法是根据加强筋结构不同方向上的力学特性而将其等效为一块各向异性板,进而将加强筋结构设计转化为各向异性板的结构设计;又给出了等效各向异性板性能参数的确定方法,并将这种新方法应用在汽车前纵梁吸能性的优化设计中。结果表明,此方法有较高的实用性。
Laying out stiffeners can enforce the strength of plates at the condition of not changing material cost. To find a best way of stiffener layout, a new method to design stiffener of plates and shells is presented in this paper based on the equivalence principle. In this method, the stiffener is equivalent to a piece of anisotropic plate because of its mechanical property in a different direction and it is possible to turn the design of stiffener into the design of anisotropic plate. The way of defining performance parameters of the anisotropic plate is presented and it is applied in the optimization design of car front rail