| 复合材料格栅结构稳定性与优化分析 |
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| 引用本文： | 陈书华.复合材料格栅结构稳定性与优化分析[J].宇航材料工艺,2012,42(3):1-7. |
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| 作者姓名： | 陈书华 |
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| 作者单位： | 1. 第二炮兵工程大学,西安,710025
2. 西安航天复合材料研究所,西安,710025 |
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| 摘 要： | 阐述了复合材料格栅结构稳定性及优化分析方法研究概况。指出在格栅结构初级设计阶段可利用拟膜分析法对等效的格栅平板、圆筒及锥筒进行整体屈曲计算即可,而对于复杂构型格栅结构,由于不对称性及拉-压-扭耦合效应存在很难获得解析解,需借助有限法对结构进行非线性求解而求得其真实力学响应,同时还介绍了其他算法,如遗传算法。最后介绍了复合材料格栅结构破坏机理的一些试验方法。
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| 关 键 词： | 复合材料格栅结构 稳定性 优化 |
Buckling and Optimization of Composite Lattice Structures |
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| Chen Shuhua
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Liu Yongqiong
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Liu Jianchao.Buckling and Optimization of Composite Lattice Structures[J].Aerospace Materials & Technology,2012,42(3):1-7. |
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| Authors: | Chen Shuhua Liu Yongqiong Liu Jianchao |
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| Institution: | 1 The Second Artillery Engineering University,Xi’an 710025)(2 Xi’an Aerospace Composite Research Institute,Xi’an 710025) |
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| Abstract: | This paper reviews different approaches used to analyze buckling and optimization of composite lattice structures.In the preliminary design,a smeared stiffness approach can be used to calculate global buckling analytical results for smeared lattice panels,cylinders and conical shells.However,it is difficult to get the analytical results for complicated lattice structures with unbalanced laminate and stretching-bending-shearing coupling.So FEA(finite element analysis) is used to get realistic mechanical response through nonlinear simulation.Simultaneously,the paper also introduces other numerical methods(i.e.,genetic algorithm).Finally,some experimental methods employed to investigate fracture mechanisms and post-buckling behavior of lattice structure are also introduced. |
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| Keywords: | Composite lattice structure Buckling Optimization |
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