| 卫欣,杨卫,余寿文.利用线弹簧模型计算含表面裂纹的板壳结构的复合型应力强度因子[J].计算力学学报,1991,8(3): |
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| 利用线弹簧模型计算含表面裂纹的板壳结构的复合型应力强度因子 |
| Determination of Mixed Mode Stress Intensity Factors for Surface Cracks on Plates and Shells by Using the Line Spring Model |
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| DOI：10.7511/jslx19913036 |
| 中文关键词: 线弹簧模型,复合型应力强度因子,ADINA程序,管节点 |
| 英文关键词:line-spring model| mixed mode stress intensity factors,ADINA code,tubular joints, |
| 基金项目:国家自然科学基金 |
| 卫欣 杨卫 余寿文 |
清华大学工程力学系
(卫欣，杨卫)
，清华大学工程力学系(余寿文)
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| 中文摘要: |
| 本文将线弹簧模型推广应用于复合型应力强度因子的计算。将复合型线弹簧单元与ADINA程序相联接,便得到分析复杂结构物(特别是诸如管节点一类的空间相贯体结构)中所含表面裂纹的复合型应力强度因子程序。算例表明:该方法具有较高的计算效率而又能满足工程分析的精度要求。 |
| 英文摘要: |
| The Line Spring Model (LSM) is extended to the determination of mixed mode stress intensity factor in the present paper. When linked with the finite element code ADINA, this line spring element can be engaged in the analysis for surface flaws in complicated shell structures, such as spatially intersecting structures like tubular joints. Representative calculations indicate that the present methodology is numerically efficient and satisfies the required accuracy of engineering analysis. |
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