考虑端面摩擦效应的单轴煤样统计损伤尺度本构模型

his paper put forward a statistical damage scale constitutive model of coal sample with effects of interfacial friction, based on the theory of Weibull and random distribution, according to the theory of damage mechanics. Through MTS system testing, we can obtain the main reason of differences between theory and experiment is the effects of interfacial friction, and then modified the scale effect of effects of interfacial friction. In comparison, theoretical results met direct testing outcome very well. Such scale effect analyses can provide new approaches to complete research of rock strength.