| 材料损伤开裂的数值模拟方法 |
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| 引用本文： | 李国琛,LI Guo-chen. 材料损伤开裂的数值模拟方法[J]. 复合材料学报, 2001, 18(1): 93-96 |
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| 作者姓名： | 李国琛 LI Guo-chen |
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| 作者单位： | 1. 中国科学院 力学研究所
2. Institute of Mechanics, Academia Sinica, |
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| 基金项目： | 国家自然科学基金资助项目 !(19872 0 64 )，非线性力学国家重点实验室资助 |
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| 摘 要： | 针对数值模拟材料损伤开裂的现有方法——空单元技术和嵌入过程区中结点力释放方法,提出了释放空单元内结点力的新模拟方法,既可解决原有空单元技术未曾明确的残余应力的释放问题,又可避免采用嵌入过程区方法时所引入的大量重叠结点。己有算例表明,本方法具有模型简明,操作便利的特点。
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| 关 键 词： | 损伤开裂 空单元 有限元分析 |
| 文章编号： | 1000-3851(2001)01-0093-04 |
| 收稿时间： | 2000-10-20 |
| 修稿时间： | 2000-10-20 |
METHOD FOR NUMERICAL SIMULATION OF DAMAGE AND CRACKING IN MATERIALS |
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| LI Guo-chen. METHOD FOR NUMERICAL SIMULATION OF DAMAGE AND CRACKING IN MATERIALS[J]. Acta Materiae Compositae Sinica, 2001, 18(1): 93-96 |
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| Authors: | LI Guo-chen |
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| Affiliation: | Institute of Mechanics, Academia Sinica, Beijing 100080,China |
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| Abstract: | Concerning the existing methods (empty element technique and embedded process zone method used for releasing nodal forces) applied to the numerical simulation of damage and cracking in materials, a new method of modeling is proposed for releasing the internal nodal forces of the empty elements. It provides a way to release the residual stresses which are not specified by the previous empty element technique, but without resort to using redundant overlap nodes as that in the embedded process zone method. Previous computation examples have demonstrated that this method has the advantages of simple modeling and convenient implementation. |
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| Keywords: | damage and cracking empty element finite element method |
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