| 三点弯曲梁裂缝应力强度因子有限元分析 |
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| 引用本文： | 赵伟,向阳开.三点弯曲梁裂缝应力强度因子有限元分析[J].重庆交通学院学报,2007,26(B10):1-2,7. |
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| 作者姓名： | 赵伟 向阳开 |
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| 作者单位： | 重庆交通大学土木建筑学院,重庆400074 |
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| 摘 要： | 利用有限元数值模拟方法对一定尺寸的砼三点弯曲梁三维裂缝进行分析,得出应力强度因子KI随裂缝长度和荷载水平变化时的变化规律,并通过与已有经验公式的比较,验证有限元裂缝分析方法的正确性.并归纳出KI简化计算公式.
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| 关 键 词： | 有限元法 三维裂缝 J积分 应力强度因子 |
| 文章编号： | 1674-0696（2007）S-0001-02 |
| 收稿时间： | 2006-04-14 |
| 修稿时间： | 2006-05-12 |
Research on Stress Intensity Factor of the Concrete Crack Based on FEM |
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| ZHAO Wei, XIANG Yang-kai.Research on Stress Intensity Factor of the Concrete Crack Based on FEM[J].Journal of Chongqing Jiaotong University,2007,26(B10):1-2,7. |
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| Authors: | ZHAO Wei XIANG Yang-kai |
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| Abstract: | Through the FEM to research 3-D crack of a three point bent concrete beam,the viariation law of the stress intensity factor KI is got when it changes with the crack length and the load level.The correctness of the FEM is validated by comparing with the existent formula.Finally,the simplified formula KI is generalized. |
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| Keywords: | FEM 3-D crack J-integral stress intensity factor |
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