| 大型复杂空间桁架结构非线性有限元求解格式 |
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| 引用本文： | 付朝江,潘钦锋.大型复杂空间桁架结构非线性有限元求解格式[J].福建工程学院学报,2012(1):1-4. |
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| 作者姓名： | 付朝江 潘钦锋 |
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| 作者单位： | 福建工程学院土木工程系 |
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| 基金项目： | 福建省高校服务海西建设重点项目(闽教高(2009)8号);福建工程学院博士启动基金项目(GY-Z0707) |
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| 摘 要： | 针对大型复杂的空间桁架结构的大位移静力分析,提出一个新的几何非线性求解格式。该格式基于有限元法,采用节点位置而不是节点位移来描述问题。应用固定空间的笛卡尔坐标系,从提出的位置概念直接确定应变。将该求解格式算例结果与弧长法计算结果比较,结果表明,该求解格式具有良好的精度,对大型复杂空间桁架结构的几何非线性分析是可行和有效的。
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| 关 键 词： | 有限元法 非线性分析 空间桁架 求解格式 |
Nonlinear finite element solution formulation for complex space truss structure |
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| Fu Chaojiang,Pan Qinfeng.Nonlinear finite element solution formulation for complex space truss structure[J].Journal of Fujian University of Technology,2012(1):1-4. |
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| Authors: | Fu Chaojiang Pan Qinfeng |
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| Institution: | (Civil Engineering Department,Fujian University of Technology,Fuzhou 350108,China) |
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| Abstract: | A new geometric nonlinear formulation for large-deflection static problems involving complex space truss structure was presented based on the finite element method.In the proposed formulation nodal positions rather than nodal displacements were adopted to describe the problem.The strain was determined directly via the proposed position concept,using a fixed-space Cartesian coordinate system.The results indicate that the proposed formulation is simple and can yield good results.Examples were provided in the example section to validate the formulation. |
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| Keywords: | finite element method(FEM) nonlinear analysis space truss solution formulation |
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