| 一种人字形切槽三点弯曲圆棒试样的应力强度因子算法 |
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| 引用本文： | 王启智 鲜学福. 一种人字形切槽三点弯曲圆棒试样的应力强度因子算法[J]. 重庆大学学报(自然科学版), 1991, 14(4): 20-24 |
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| 作者姓名： | 王启智 鲜学福 |
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| 作者单位： | 重庆大学资源及环境工程系(王启智)，重庆大学资源及环境工程系(鲜学福) |
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| 摘 要： | 用一种有效的近似方法获得了人字形切槽三点弯曲圆棒试样的应力强度因子(SIF),用最小二乘法拟合了SIF的多项式,并将其用于国际岩石力学学会(ISRM)建议的断裂韧度试样,结果比较满意。
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| 关 键 词： | 切槽 圆棒 应力强度因子 算法 |
A METHOD FOR CALCULATING STRESS INTENSITY FACTORS OF CHEVRON-NOTCHED THREE-POINT BEND ROUND BAR SPECIMENS |
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| Wang Qizhi Xian Xuefu. A METHOD FOR CALCULATING STRESS INTENSITY FACTORS OF CHEVRON-NOTCHED THREE-POINT BEND ROUND BAR SPECIMENS[J]. Journal of Chongqing University(Natural Science Edition), 1991, 14(4): 20-24 |
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| Authors: | Wang Qizhi Xian Xuefu |
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| Affiliation: | Wang Qizhi Xian Xuefu |
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| Abstract: | An effective approximate method is proposed to obtain the stress intensity factors (SIF) of the chevron notched three-point bend round bar specimens, the least square principle is applied to fit the results into a polynomial for SIF,which is applied to the fracture toughness specimen suggested by the International Society for Rock Mechanics(ISRM) ,the result is satisfatory. |
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| Keywords: | fracture toughness chevron notch three-point bend round bar stress intensi-ty factor(SIF) |
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