MSC.Partran/Nastran微纳卫星结构有限元仿真分析
关键词 微纳卫星 载荷 结构分析 有限元
毕业论文设计说明书外文摘要
Title The structural analysis of CubeSat by Finite Element Method
Abstract
The concept of CubeSat was proposed by California Polytechnic State University and Stanford University in 1999. The purpose is to help the world's universities into the field of space science and exploration. Because of the complexity of the CubeSat launch environment has led to the form and nature of the load was different. CubeSat structure analysis is mainly mechanical analysis of the structure, its purpose is to analyze the mechanical characteristics of CubeSat structure known structural response under loading conditions. In this paper, MSC.Partran / Nastran for CubeSat finite element simulation analysis, which include static analysis, modal analysis,sinusoidal vibration analysis and random vibration analysis. The results show that the deformation and stress of static response is small the first order modal frequency of CubeSat is 122Hz ,the acceleration response amplitude under sinusoidal vibration analysis and random vibration analysis is also not large which demonstrates that the structure has enough stiffness and strength to endure the acceleration loads.
Keywords CubeSat loads Strctural Analysis Finite Element Method
目 次
1 绪论 1
1.1 微纳卫星研究背景及现状 1
1.1.1 微纳卫星的由来 1
1.1.2 微纳卫星的研究背景 1
1.2 课题背景 2
1.3 结构分析技术发展现状 3
2 微纳卫星结构有限元分析 4
2.1前言 4
2.2结构分析模型的建立 4
2.2.1 微纳卫星结构模型的简化 4
2.2.2 连接条件的确定 5
2.2.3 有限元单元类型的选择和单元网格的划分 6
2.2.4 单元特性的定义 6
2.2.5 建模结果 7
2.2.6 计算机分析模型的检验 7
2.3结构静力分析 7
2.3.1结构静力分析条件 7
2.3.2结构静力分析过程及结果 8
2.4结构模态分析 10
2.4.1模态分析的目的和作用 10
2.4.2模态分析过程及结果 11
2.5结构频率响应分析 12
2.5.1结构频率响应分析方法和条件 12
2.5.2 结构频率响应分析过程及结果 13
2.6结构随机响应分析 15
2.6.1结构随机响应分析过程 15
2.6.2结构随机响应分析结果 16