| 热－塑变形局部化的有限元分析及其对激光破坏效应的应用 |
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| 引用本文： | 段祝平,黄晨光,周益春,宋顺成.热－塑变形局部化的有限元分析及其对激光破坏效应的应用[J].固体力学学报,1995(1). |
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| 作者姓名： | 段祝平 黄晨光 周益春 宋顺成 |
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| 作者单位： | 中国科学院力学研究所，内蒙古金属研究所 |
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| 摘 要： | 本文给出了热力耦合的热弹粘塑性材料的有限元分析方法，并讨论与之相关的时间积分算法，为改善线性插值函数所引起的不协调性及提高运算速度，应力协调迭代理论被引入相应的算法及程序中，最后对非绝热过程中热－塑变形局部化及激光诱导的剪切变形集中进行了数值模拟，其结果与理论分析有良好的吻合．
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| 关 键 词： | 剪切带，有限元，激光，应力协调理论 |
A FINITE ELEMENT ANALYSIS FOR THERMAL-PLASTIC DEFORMATION LOCALIZATION WISH APPLICATION TO LASER-INDUCED BULGING EFFECT |
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| Duan Zhuping,Huang CHenguang,Zhou Yichun.A FINITE ELEMENT ANALYSIS FOR THERMAL-PLASTIC DEFORMATION LOCALIZATION WISH APPLICATION TO LASER-INDUCED BULGING EFFECT[J].Acta Mechnica Solida Sinica,1995(1). |
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| Authors: | Duan Zhuping Huang CHenguang Zhou Yichun |
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| Abstract: | This peper aims at presenting a modified method of finite element analysis for thermal elastic visco-plastic materials and discussing on the corresponding time integration algorithm.In order to improve the conventional weighted-residual enhance the calculation speed and save the operation time,a new numerical technique called the compatible stress iterative procedure is proposed,where the Bodner-Partom constitutive relations is used in the associated numerical programing.By this new technique,adiabatic shear banding problem and thermal-plastic shear deformation localization induce by a pulsed laser ate studied numerically.The numerical results show a good agreement with theoretical analysis. |
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| Keywords: | shear banding finite element method laser stress compatibility |
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