A Fracture Criterion for Specimens Containing Collinear Cracks in Compression – Confirmation of Coulomb–Mohr Criterion
Rock materials contain cracks, and under certain conditions, these cracks will extend, branch and coalesce, which have received the most attention recently. In this paper, an attempt is made to set up a fracture criterion for the special case as cracks are situated along a straight line. Under compression, cracks close and the crack surface friction can resist crack surface sliding. A set of complex stress functions and the solution of stress intensity factors have been presented in the author’s previous publication and will be applied in this paper. A fracture criterion for the case of collinear cracks under compression is developed, which is expressed in terms of principal stresses. For the case of materials without pre-existing cracks, this new fracture criterion becomes the well known Coulomb-Mohr failure criterion.
Stress intensity factor fracture criterion crack surface friction fracture toughness compression
Zheming Zhu Xinxing Jin Hao Tang Heping Xie
Department of Engineering Mechanics, Sichuan University, Chengdu, Sichuan, China, 610065
国际会议
香港
英文
1-6
2009-05-19（万方平台首次上网日期，不代表论文的发表时间）