| STUDY ON MIXED MODE FRACTURE AND STRENGTH PROPERTIES IN ROCK UNDER COMPRESSION |
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| 作者姓名： | Liu Dongyan Zhu Keshan |
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| 作者单位： | Faculty of Civil Engineering |
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| 摘 要： | Mixed mode fracture in rock subjected to compressive loading has many differ-ent features in fracture hehaviour from those subjected to tensile loading,especially when the aper-ture is partly or fully closed.The traditional theory of elastic fracttire mechanics can not be used tosolove compressive-shear fracture problem. Based on fracture characteristics of rock under compres-sion,the formulas to calculate stress intensity factor are updated so that the new strength criterion isevolved to evaluate the crack initiation streilgth.The stress distribution and the relative displacementof crack surface in central slit is confirmed by FEM analysis.
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| 关 键 词： | rock mixed mode fracture.fracture mechanics stress intensity factor. |
STUDY ON MIXED MODE FRACTURE AND STRENGTH PROPERTIES IN ROCK UNDER COMPRESSION |
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| Liu Dongyan,Zhu Keshan.STUDY ON MIXED MODE FRACTURE AND STRENGTH PROPERTIES IN ROCK UNDER COMPRESSION[J].Storage & Process,1994(2). |
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| Authors: | Liu Dongyan Zhu Keshan |
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| Institution: | Faculty of Civil Engineering |
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| Abstract: | Mixed mode fracture in rock subjected to compressive loading has many differ-ent features in fracture hehaviour from those subjected to tensile loading,especially when the aper-ture is partly or fully closed.The traditional theory of elastic fracttire mechanics can not be used tosolove compressive-shear fracture problem. Based on fracture characteristics of rock under compres-sion,the formulas to calculate stress intensity factor are updated so that the new strength criterion isevolved to evaluate the crack initiation streilgth.The stress distribution and the relative displacementof crack surface in central slit is confirmed by FEM analysis. |
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| Keywords: | rock mixed mode fracture fracture mechanics stress intensity factor |
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