| 考虑翘曲变形的复合材料叠合梁几何非线性的有限元分析 |
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| 引用本文： | J.E. Barradas Cardoso,Nuno M.B. Benedito,Aníbal J.J. Valido.考虑翘曲变形的复合材料叠合梁几何非线性的有限元分析[J].钢结构,2009(10). |
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| 作者姓名： | J.E. Barradas Cardoso Nuno M.B. Benedito Aníbal J.J. Valido |
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| 摘 要： | 提出了一个用于复合材料叠合梁结构分析的有限元模型,梁结构具有几何非线性性能,包括扭转翘曲变形。采用一个考虑了改进拉格朗日法和广义位移控制法的公式对结构的变形进行计算。采用二次等参有限单元对梁横截面进行离散化,以确定梁的弯扭特性。利用两结点的Hermitean三维有限梁元对结构进行离散化,其中每结点具有7个自由度。运用数个实例,分析了层的取向对结构性能的影响。
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| 关 键 词： | 薄壁梁 复合材料 非线性结构 有限元 |
Finite Element Analysis of Thin-Walled Composite Laminated Beams with Geometrically Nonlinear Behavior Including Warping Eeformation |
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| Affiliation: | J.E. Barradas Cardoso,Nuno M.B. Benedito and Aníbal J.J. Valido |
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| Abstract: | A finite element model for structural analysis of composite laminated thin-walled beam structures, with geometrically nonlinear behavior, including torsion warping deformation, is presented. A general continuum formulation considering the updated Lagrangean procedure and a generalized displacement control method, are used to describe the deformation of the structure. The beam cross-section geometry is discretized by quadratic isoparametric finite elements to determine its bending-torsion properties. The str... |
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| Keywords: | Thin-walled beams Composites Nonlinear structures Finite elements |
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