| 静止裂纹尖端实验的HRR奇异场 |
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| 引用本文： | 刘宝琛,蔺书田.静止裂纹尖端实验的HRR奇异场[J].力学学报,1993,25(1):69-75. |
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| 作者姓名： | 刘宝琛 蔺书田 |
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| 作者单位： | 清华大学力学系 |
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| 摘 要： | 用近代光学试验方法(面内云纹和投影云纹),测量了不同应变硬化指数材料(n=3.350～9.180)、平面应力Ⅰ型双边裂纹试件、裂纹尖端附近位移场和应变场。由试验结果分析了裂纹尖端位移奇异性,得到J主导区和围绕裂纹尖端附近HRR场分布。分析了HRR分布随载荷、材料不同的变化规律。
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| 关 键 词： | 云纹法 裂纹 尖端 奇异性 应变硬化 |
THE EXPERIMENTAL HRR SINGULARITY FIELD OF THE STATIONARY CRACK-TIP |
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| Liu Baochen and Lin Shutian.THE EXPERIMENTAL HRR SINGULARITY FIELD OF THE STATIONARY CRACK-TIP[J].chinese journal of theoretical and applied mechanics,1993,25(1):69-75. |
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| Authors: | Liu Baochen and Lin Shutian |
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| Abstract: | In this paper, the displacement and strain fields around double edge cracks are measured for different hardening materials (the strain hardening exponents n = 3.350→ 9.180) using optical methods (in-plane moire and projected moire methods). The experimental singularity fields are analyzed and compared with HRR theoretical solution. The experimental HRR singularity fields around crack-tip are obtained and their distribution with different loading and hardening exponents are discussed. |
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| Keywords: | crack-tip singularity field optical method HRR solution hardening exponent |
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