| 大跨度双层柱面网壳结构的非线性有限元可靠度、相关性及灵敏度分析 |
| |
| 引用本文： | 柳春光,李会军.大跨度双层柱面网壳结构的非线性有限元可靠度、相关性及灵敏度分析[J].天津大学学报(自然科学与工程技术版),2010,43(3). |
| |
| 作者姓名： | 柳春光 李会军 |
| |
| 作者单位： | 柳春光(大连理工大学海岸和近海工程国家重点实验室,大连,116024;大连理工大学建设工程学部,大连,116024);李会军(大连理工大学建设工程学部,大连,116024) |
| |
| 基金项目： | 国家自然科学基金资助项目 |
| |
| 摘 要： | 在非线性有限元可靠度分析中,对于特定的材料模型,约束函数会有不连续的梯度,它将导致搜索过程的不收敛.鉴于此,在大跨度空间结构的可靠度、相关性及敏感性计算中引入了两种光滑材料模型,通过引入的光滑材料模型及应用4种搜索验算点的方法使得非线性有限元可靠度计算在满足计算精度的情况下更易收敛,耗时更少,并且使得按照常规方法不能收敛的问题也变得收敛;对双层柱面网壳整体进行系统可靠度计算,研究了响应量间的相关性,得出一些有价值的结论.结果表明,引入的光滑材料模型在大跨度空间结构的可靠度与敏感性分析中简单易行,效率精度较高.
|
| 关 键 词： | 大跨度双层柱面网壳 可靠度 敏感性 相关性 单轴光滑双线性材料 单轴Bouc-Wen材料 |
Nonlinear Finite Element Analysis on Reliability,Correlation and Sensitivity of Large-Span Double-Layer Cylindrical Lattice Shell |
| |
| LIU Chun-guang,LI Hui-jun.Nonlinear Finite Element Analysis on Reliability,Correlation and Sensitivity of Large-Span Double-Layer Cylindrical Lattice Shell[J].Journal of Tianjin University(Science and Technology),2010,43(3). |
| |
| Authors: | LIU Chun-guang LI Hui-jun |
| |
| Institution: | LIU Chun-guang1,2,LI Hui-jun2 (1. State Key Laboratory of Coastal , Offshore Engineering,Dalian University of Technology,Dalian 116024,China,2. Faculty of Infrastructure Engineering,China) |
| |
| Abstract: | In nonlinear finite element reliability analysis, searching process usually does not converge due to discontinuous gradient of constraint function for certain material models. Hence, two smoothed material models are presented in reliability, correlation and sensitivity analysis of large-span space lattice structure. The two smoothed material models presented and the four algorithms searching design points can make nonlinear finite element reliability analysis more convenient and efficient, and address certa... |
| |
| Keywords: | large-span double-layer cylindrical lattice shell reliability sensitivity correlation uniaxial smoothed bilinear material:uniaxial Bouc-Wen material |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
