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本文以某实验炮支撑架为研究对象，采用HyperWorks软件建立了该支撑架的有限元模型，对其结构进行了静态有限元分析，计算了该支撑架的刚强度，结果表明该结构有优化余量。在此基础上，采用基于有限元法的拓扑优化方法对支撑架进行结构拓扑优化，并对优化结构进行静态特性分析，经过优化设计的支撑架提高了刚度，减轻了质量，材料分布更加合理。同时，将拓扑优化技术应用在支撑架设计中，丰富和发展了支撑架的设计方法，对模拟火炮发射实验具有积极的意义。
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本文研究表明，该支撑架的设计强度满足设计要求。优化分析研究表明，经拓扑优化后，该支撑架静态特性参数指标均有不同程度的提高。由此可以得出结论，在实际工程中，基于有限元方法的拓扑优化技术应用在支撑架设计方面是可行的，采用此方法在减少质量的同时较好地提高了支撑架的整体性能。5387
关键词 火炮支撑架 有限元法 拓扑优化 变密度法
毕业设计说明书（论文）外文摘要
Title Optimization Design and Analysis of an Artillery
Support Frame in a Simulation Experiment
Abstract
In this paper，based on a support frame of an artillery，the finite element model is established by using HyperWorks．The stiffness and strength of the frame are gained qualitatively through static analysis in order to test and verify the design．As a result, there is still allowance for optimization. Furthermore, topological optimization method based on FEM is employed to redesign the topological structure of the frame．Some static information about the optimized frame is gained．And the optimized frame has an improvement of stiffness, a losing of mass and a more reasonable distribution of material. At the same time，this paper explores preliminarily the topological optimization method in the frame and has positive impacts on the efficiency of the experiment of analog projectiles.
It is showed in the research that the frame strength can meet the design requirement. It is also shown from the performance parameters that the optimized body is improved to varying degrees except the mass. It is doable to employ the topological optimization technology based on FEM into the design of frame structure．The overall performance of the frame can be enhanced greatly by using the technology while mass losing.
Keywords Artillery support frame Finite element method Topological optimization Variable density method
目 次
1 绪论 1
1.1 选题的背景与意义 1
1.2 有限元法的发展现状 1
1.3 结构优化的发展现状 3
1.4 本文研究的主要内容 5
2 支撑架的有限元分析 6
2.1 有限元法 6
2.2 支撑架网格划分软件 9
2.3 支撑架有限元模型的建立 10
2.4 边界条件的创建 16
2.5 计算结果及分析 18
2.6 本章小结 20
3 支撑架的结构拓扑优化 21
3.1 结构优化 21
3.2 拓扑优化 23
3.3 支撑架拓扑优化软件 25
3.4 支撑架的拓扑优化 26
3.5 拓扑优化结果处理 28
3.6 本章小结 30
4 修改结构有限元分析 31
4.1 优化结构设计 31
4.2 刚强度分析 31
4.3 对比分析 32