| 大变形柔性梁系统的绝对坐标方法 |
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| 引用本文： | 李彬,刘锦阳. 大变形柔性梁系统的绝对坐标方法[J]. 上海交通大学学报, 2005, 39(5): 827-831 |
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| 作者姓名： | 李彬 刘锦阳 |
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| 作者单位： | 上海交通大学,工程力学系,上海,200030;上海交通大学,工程力学系,上海,200030 |
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| 摘 要： | 研究了绝对坐标法在大变形柔性梁系统刚柔耦合动力学问题中的应用．考虑几何非线性，用绝对坐标法推导出有限元离散的平面梁系统的动力学方程．用能量守恒原理验证了绝对坐标法计算结果的正确性．比较大变形时的绝对坐标法与一次近似的混合坐标法的计算结果表明，文中绝对坐标法比一次近似的混合坐标法模型更精确，适合于大变形的情况．
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| 关 键 词： | 柔性梁系统 动力学方程 绝对坐标法 大变形 |
| 文章编号： | 1006-2467(2005)05-0827-05 |
| 修稿时间： | 2004-06-30 |
Application of Absolute Nodal Coordination Formulation in Flexible Beams with Large Deformation |
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| LI Bin,LIU Jin-yang. Application of Absolute Nodal Coordination Formulation in Flexible Beams with Large Deformation[J]. Journal of Shanghai Jiaotong University, 2005, 39(5): 827-831 |
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| Authors: | LI Bin LIU Jin-yang |
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| Abstract: | The application of an absolute nodal coordinate (ANC) formulation in the coupling dynamics of flexible beams with large deformation was investigated. By using geometric nonlinear formulation and (finite) element method, the dynamics equations of planar beams system were developed by using the ANC formulation. The comparison between the ANC formulation and nonlinear strain-displacement formulation in the case of small deformation and large deformation indicates that the ANC formulation is more precise and suited for the beams with large deformation. The present results are verified by using the energy conservation law. |
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| Keywords: | planar beams system kinetics equations absolute nodal coordinate formulation large deformation |
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