| 光弹性法和有限元法对应力强度因子的求解 |
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| 引用本文： | 米红林,瞿志豪,陆鹏.光弹性法和有限元法对应力强度因子的求解[J].机械强度,2010,32(2). |
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| 作者姓名： | 米红林 瞿志豪 陆鹏 |
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| 作者单位： | 1. 上海应用技术学院机械与自动化工程学院,上海,200235
2. 上海船舶柴油机研究所,上海,200090 |
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| 基金项目： | 上海市教委科研基金资助(060Z028,060Z031)~~ |
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| 摘 要： | 为了探讨应力强度因子的计算方法,应用光弹性法和有限元法分别对含单边裂纹的紧凑拉伸试件进行实验分析和数值计算,给出有限元计算断裂问题的详细步骤以及光弹性法中通过求形状因子间接得到应力强度因子的实验过程。结果表明实验值与有限元计算值相吻合。有限元计算能够为优化设计提供较便捷的手段,而实验可以校验数值计算的正确性。两者可以取长补短,发挥各自的优势,可以更好地解决工程问题。
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| 关 键 词： | 光弹性 有限元法 应力强度因子 断裂力学 紧凑拉伸试件 |
STRESS INTENSITY FACTOR SOLUTION BY PHOTOELASTICITY AND FINITE ELEMENT METHOD |
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| MI HongLin,QU ZhiHao,LU Peng.STRESS INTENSITY FACTOR SOLUTION BY PHOTOELASTICITY AND FINITE ELEMENT METHOD[J].Journal of Mechanical Strength,2010,32(2). |
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| Authors: | MI HongLin QU ZhiHao LU Peng |
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| Affiliation: | 1.School of Mechanical and Automation Engineering/a>;Shanghai Institute ofTechnology/a>;Shanghai 200235/a>;China;2.Shanghai Marine Diesel Research Institute/a>;Shanghai 200090/a>;China |
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| Abstract: | Method to calculate stress intensity factor (SIF) of cracked body is fundamental in fracture mechanics.The stress analysis by finite element method (FEM) of compact tensile specimen with single-side crack is presented and the numerical result for SIF has been verified by photo-elasticity method.The procedure of solving SIF using FEM is described in detail and the experiment process finding SIF by photo-elasticity method is also formulated.During the experiment,SIF can be obtained indirectly through shape fa... |
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| Keywords: | Photo-elasticity Finite element method Stress intensity factor Fracture mechanics Compact tensile specimen |
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