基于分步拓扑优化的装甲托架结构轻量化设计

Lightweight Structural Design of an Armor Bracket Based on Stepwise Topology Optimization

摘要: 装甲托架作为支撑武器装备运输、起竖等工况的关键结构件，其整件质量与结构强度优化问题是设计人员关注的重点方向。以某装甲托架为研究对象，本文采用Optistruct中拓扑优化模块，基于六种典型工况，运用多区域分步拓扑优化方法对装甲托架进行拓扑优化，并在考虑工艺性和成本的前提下开展几何模型逆向重构，最后通过结构强度、刚度校核，进一步验证优化后模型的可靠性，相较于初始模型实现了87.3%的减重。本文的研究结果和优化方法可以为之后装甲托架以及其它桁架类结构的设计提供一定的参考。

Abstract: As an important structural part supporting weaponry transportation and erection condition, the armor bracket is one of the key research directions for designers to optimize its weight and structural strength. Taking the launcher of an armor bracket as the research object, this article used stepwise topology optimization method in Optistruct, based on six typical operating conditions, to optimize the structure of the armor bracket. Considering the structure manufacturability and the cost of production, the geometric model of the optimization results was reversely reconstructed. Finally, the reliability of the optimized model was further verified through structural strength, stiffness analysis. Compared with the initial model, a weight reduction of 87.3% has been achieved. The research results and optimization methods in this paper can provide a certain reference for the design of armor bracket and other truss structures.