Theoretical Analysis of Effects of Confining Pressure on the Stress Intensity Factors for Cracked Brazilian Disk

Abstract

Abstract: In order to investigate effects of confining pressure on the stress intensity factors for a cracked Brazilian disk, the closed-form expressions of the stress intensity factors were obtained by using the weight function method in fracture mechanics for the cracked Brazilian disk loaded by the confining pressure, and then the explicit expressions of the stress intensity factors were achieved under both the confining pressure and diametrical forces loading condition. Based on the formulas of the stress intensity factors, effects of confining pressure on stress intensity factors of the cracked Brazilian disk was analyzed. The analyzed results show that the confining pressure has no effects on the mode II stress intensity factor, however, mode I stress intensity factors decrease with the increasing confining pressure. In addition, effects of confining pressure on the loading condition of pure mode II crack were also investigated. The analyzed results show that the critical loading angle for pure mode II crack decreases gradually to 0 degree with the increasing confining pressure

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oai:CiteSeerX.psu:10.1.1.921.4250Last time updated on 11/1/2017

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