| 确定应力强度因子的光弹性法与焦散线法 |
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| 引用本文： | 张忠平,孙中禹,孙强. 确定应力强度因子的光弹性法与焦散线法[J]. 应用力学学报, 2001, 18(3): 100-104 |
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| 作者姓名： | 张忠平 孙中禹 孙强 |
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| 作者单位： | 空军工程大学 |
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| 摘 要： | 以光弹性法及焦散线法的基本原理为基础，对两种方法在确定应力强度因子方面进行了比较。发现对于纯I型裂纹问题，光弹性法的精度低于焦散线法的精度；对于I－Ⅱ混合型裂纹问题，就张开型应力强度因子而言，光弹性法的精度低于焦散线法的精度，而就滑移型应力强度因子而言，光弹性法的精度高于焦散线法的精度。
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| 关 键 词： | 应力强度因子 光弹性法 焦散线法 |
| 文章编号： | 1000-4939(2001)03-0100-05 |
| 修稿时间： | 1999-11-23 |
Comparison between the Techniques of Transmitted Caustics and Photoelasticity in Determining Stress Intensity Factors |
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| Zhang Zhongping Sun Zhongyu Sun Qiang. Comparison between the Techniques of Transmitted Caustics and Photoelasticity in Determining Stress Intensity Factors[J]. Chinese Journal of Applied Mechanics, 2001, 18(3): 100-104 |
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| Authors: | Zhang Zhongping Sun Zhongyu Sun Qiang |
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| Abstract: | Based on the principles of transmitted caustics as well as photoelasticity, the two techniques in determining stress intensity factors (SIF) are compared. It is found that, for mode I cracks, the precision of photoelasticity technique is hi gher than that of caustic method. And for I-II mixed cracks, the precision of p hotoelasticity technique is lower than that of caustic method in determining ope ning mode SIF, but as for sliding mode SIF, the conclusion is contrary to the fo rmer.case. |
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| Keywords: | stress intensity factor photoelasticity caustic method comparison. |
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