| 受冲薄壳弹塑性大变形力学特性的有限元分析 |
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| 引用本文： | 刘振闻,雷正保.受冲薄壳弹塑性大变形力学特性的有限元分析[J].长沙交通学院学报,1999,15(2):17-21. |
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| 作者姓名： | 刘振闻 雷正保 |
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| 作者单位： | 长沙交通学院,汽车工程系,湖南,长沙,410076 |
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| 摘 要： | 采用基于堕劝坐标系的假设应变场壳单元，弹塑性等向强化材料模型，一体化接触搜寻算法，罚参数接触力计算法及显式时间积分格式进行薄壳弹塑性大变形力学特性分析。算例表明，该方法简明，直观，快捷，方便。
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| 关 键 词： | 薄壳 弹塑性 有限元 受冲薄壳 汽车 碰撞 |
| 修稿时间： | 1998-12-15 |
The Explicit FEM for the Mechanics Properties of Thin Shell Structures with Impact Loading Acted on in Elastic-Plastic Processes of Large Displacement & Deformation |
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| LIU Zhen-wen,LEI Zheng-bao.The Explicit FEM for the Mechanics Properties of Thin Shell Structures with Impact Loading Acted on in Elastic-Plastic Processes of Large Displacement & Deformation[J].Journal of Changsha Communications University,1999,15(2):17-21. |
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| Authors: | LIU Zhen-wen LEI Zheng-bao |
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| Abstract: | A dynamic
explicit type finite element method is used to analysis the mechanics properties of thin
shell structures with impact loading acted on in elastic-plastic large displacement &
deformation processes. The 4-node quadrilateral shell element based on the formulation of
the assumed strain field method and corotational coordinate system is employed. The
material is assumed to satisfy elastic-plastic property with isotropic hardening yield
condition. The single surface contact algorithm is used to deal with the contact
interfaces and the contact force is evaluated by penalty method. Several numerical
examples were given. |
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