某舰炮托架多目标拓扑优化设计

为避免单目标拓扑优化无法考虑其他因素的缺点,通过基于密度法中的SIMP法,采用折衷规划法定义了多目标拓扑优化。以某舰炮为例,对其托架进行了多目标拓扑优化,得到了同时满足舰炮射角为0°、49°和方向角为0°时刚度最大以及动态低阶振动频率最大要求的舰炮托架的拓扑结构,并根据此优化对托架进行了结构重新改进和有限元的验证,表明了该优化设计方法的可行性。对于舰炮托架结构改进设计具有工程应用价值,对其他一般机械结构问题也提供了一种设计思路。

Multi-objective Topology Optimization Design for a Certain Naval Gun Carriage

To overcome the shortcomings of single-objective optimization methods,this paper, based on the density of the SIMP method,the multi-objective topological optimization is defined by compromise programming approach. A kind of Naval Gun is taken as an example in this paper. The carriage of the naval gun is optimized by the method of multi-objective topological optimization. The topological structure that satisified the conditions of stiffness maximization as well as the dynamic low-order frequencies maximization when the naval gun fire of angle is zero degree or 49 degree,the angle of deflection is zero degree. And the structure of the carriage is improved according to the results of the topological optimization. A FEM verification is accomplished to make sure the feasibility of the optimization method. This article has a great engineering value of the desgine and improvement of the carriage of naval gun,and provided an idea of desgine to other mechanical structures.