EXPERIMENTAL AND THEORETICAL STUDY OF STATIC-DYNAMIC MIXED MODE BRITTLE FRACTURE OF ROCK

来源期刊：中南大学学报(英文版)1998年第2期

论文作者：Li Zhenzi Lin Guoxiang Xu Jicheng Zhang Jingyi Luo Zhang Zhou Hongbin Li Huijian

文章页码：47 - 50

Key words：static-dynamic; mixed-mode fracture; rock

Abstract: A new criterion of static-dynamic state mixed mode brittle fracture initiation in rock is suggested, i.e. the distortion strain energy criterion.Whent→∞, the static-state distortion strain energy criteria and the formula for determiming static-state fracture angle are obtained. The new static-state criterion, suggested by authors, is in good agreement with the author′s experimental results. In addition, the relative accuracy of three current fracture theories and the new criterion in predicting static-state mixed-mode initiation fracture loading and fracture angle in rock have been evaluated experimentally.