摘要
针对均布平压载荷下,四边简支的矩形加筋板,提出了一种基于传力路径的拓扑优化的工程方法。该方法首先运用工程近似方法获得均布平压载荷下四边简支的矩形基板的弯矩分布;根据基板的弯矩分布及给定筋条的承载能力,确定筋条的数目;根据筋条的布局情况确定基板的厚度。完成3个不同尺寸的加筋板算例,并与二级布局优化设计结果做了比较,结果表明,该方法不仅简单易行,且有很好的优化效果。
A engineering algorithm of topology optimization is proposed based on the path of force transfer. This method firstly apply engineering approximate approach to get the bending moment dis- tribution of four edges simply supported rectangular substrate under uniform pressure. The number of the horizontal and vertical rods is then determined according to the bending moment distribution and the carrying capacity of a given rod size. Finally, the thickness of the substrate is determined based on the layout of the rod. Three different sizes of the stiffened panel examples are completed and com- pared with the results of the two-level layout optimization design. The results show that the engineer- ing algorithm is not only simple and feasible,but also has a good optimization effect.
出处
《飞机设计》
2017年第2期31-35,共5页
Aircraft Design
关键词
均布平压
加筋板
拓扑优化
工程方法
uniform pressure
stiffened panel
topology optimization
engineering algorithm
