岩石Ⅱ型断裂韧度的实验方法
来源期刊:中国有色金属学报1999年第1期
论文作者:王桂尧 孙宗颀 徐纪成
文章页码:175 - 179
关键词:剪切断裂,断裂韧度,实验方法
Key words:shear fracture, fracture toughness, experimental method
摘 要:针对纯剪断裂试件存在的问题, 提出了采用压剪试件实现岩石Ⅱ型裂纹剪切断裂并测试岩石剪切断裂韧度的实验方法, 并通过对压剪试件的应力分布和测试结果的分析讨论, 提出了岩石Ⅱ型断裂韧度实验的最佳方案, 并进而讨论了Ⅱ型裂纹的两种不同断裂型式和断裂判据。
Abstract: In view of the problem existed in pure shear fracture specimen, the experimental method has been investigated, which is used to cause mode Ⅱ fracture and to measure mode ¢òfracture toughness. Meanwhile, the two different modes of fracture behavior and fracture criteria for mode Ⅱ crack were discussed.