| 林云,何文军,丁皓江,顾克秋.三维裂纹体应力强度因子的计算[J].计算力学学报,1996,13(3): |
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| 三维裂纹体应力强度因子的计算 |
| Stress intensity factor computation of three dimensional |
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| DOI：10.7511/jslx19963050 |
| 中文关键词: 三维裂纹，奇异单元，应力强度因子 |
| 英文关键词:three dimensional crack,singular element,stress intensity factor, |
| 基金项目: |
| 林云 何文军 丁皓江 顾克秋 |
| 浙江大学力学系，南京理工大学１０１教研室 |
| 摘要点击次数: 1448 |
| 全文下载次数: 1 |
| 中文摘要: |
| 本文采用塌缩三棱柱形奇异单元的位移计算应力强度因子，给出了一个新的全三维外推公式，它是Ｃｈｅｎ和Ｋｕａｎｇ公式〔１３〕的全三维推广，特例证明，它的精度比Ｉｎ－ｇｒａｆｆｅａ和Ｍａｎｕ的公式〔８〕高一阶。数值计算表明，结果稳定和对单元尺寸改变不敏感 |
| 英文摘要: |
| The method for computing stress intensity factors from three dimensional collapsed quarter point singular elements nodal displacements is presented. A new extrapolation equation is obtained which is the extensions of Chen and Kuang in three dimensions. Particular cases state clearly that the new method performs a high order of accuracy than that of lngraffen and Manu Numerical examples show that the computation is stability and not sensitive to the element size. |
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