摘要
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.
出处
《机械科学与技术》
CSCD
北大核心
2015年第12期1841-1845,共5页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(51165034)
江西省自然科学基金项目(2013BAB206029)资助
关键词
加强筋
等效各向异性板
汽车前纵梁
anisotropy
automobiles
data reduction
design of eyperiments
design
flowcharting
mathematical models
mechanical properties
optimization
pareto principle
car front rail
equivalent anisotropic plate
stiffener
