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Indexed by:会议论文

Date of Publication:2013-06-16

Included Journals:EI、Scopus

Volume:3

Page Number:2132-2137

Abstract:According to the fatigue crack extension theory of the fracture mechanics, this paper analysis the relationship between the property of the high-strength bolts and the connection surface friction coefficient, as well as the relationship between the property of the high-strength bolts and temperature. The fatigue life and fatigue damage degree under different anti-friction coefficient and different temperature are calculated by high-strength bolt three-dimension FEM model. After recycling for the same times, the fatigue life will decrease with the increase of the anti-fiction coefficient as well as the temperature. The bigger the anti-friction coefficient is, the more serious the fatigue damage is. The higher the temperature is, the more serious the fatigue damage degree is. With the increase of the anti-friction coefficient, the structure safety factor will decrease, for the increased anti-friction coefficient makes the connection surface geometric discontinuities degree become serious, then the crack extension rate will be faster. With the increase of the temperature, the structure safety factor will also decrease. The conclusions can be used as a reference for the afterwards fatigue design about such components.