Analysis on Crack Tip J Integral Value Under Sliding Contact Effect

doi:10.12068/j.issn.1005-3026.2016.12.016

Abstract

Abstract: The influence of sliding contact effect on crack tip J integral value was investigated by fracture mechanics and finite element analyses under dry friction. The variation regulation of crack tip J integral value under different friction coefficient， contact pressure， crack length and crack modality was obtained. The results show that the variation of crack tip J integral value is different with crack modality while the friction effect is considered. The increasing of friction effect aggravates variation of the crack tip J integral value for vertical crack. For oblique crack， the increasing of friction effect weakens variation of the crack tip J integral value in the vicinity of sliding to crack. The fluctuation range of crack tip J integral value increases with contact pressure increasing. The smaller the included angle between the direction of the sliding velocity and the crack， the more significantly the crack tip J integral value changes under the same contact pressure and frictional effects. The J integral value first increases and then decreases as the crack deepens.

Key words: sliding contact effect, crack, J integral, finite element analysis, fracture mechanics

CLC Number:

TB125

YAN Yu-tao， QIAN Xiao-lin， ZHANG Yi-bo， SUN Zhi-li. Analysis on Crack Tip J Integral Value Under Sliding Contact Effect[J]. Journal of Northeastern University Natural Science, 2016, 37(12): 1744-1749.

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