Experimental and theoretical study on cyclic fatigue damage evolution . . . The damage constitutive equation incorporating the novel damage variable effectively fits the stress–strain curves of saturated sandstone under various stress paths during cyclic fatigue loading, confirming its accuracy and reliability in characterizing rock damage under such conditions
Cyclic and Fatigue Behaviour of Rock Materials: Review . . . - Springer The main objective and originality of this paper are to provide a comprehensive state of the art of fatigue and cyclic loading of natural rock materials It aims at classifying and organising results and interpretations, sometimes contradictory, published in the literature over the last 50 years
Strain rate response of damage accumulation of marble under fatigue loading The cyclic loading experiments, in which the constant amplitude cyclic loading and unloading are imposed at different stress levels, are carried out on marble samples under various confining pressures to study the effects of fatigue loading conditions on mechanical properties of rock
Fatigue Deformation Characteristics and Damage Model of Sandstones . . . The analysis of the fatigue life and damage state of rock shows that the accumulation of local plastic deformation is the main factor causing fatigue failure, and the residual life and current fatigue level can be predicted with the axial strain
Strain performance and fracture response characteristics of hard rock . . . The results show that the loading and unloading effect has significant influence on stress-strain curve shape and fatigue life The hysteresis loop is overdistributed from sparse to dense with increasing loading and unloading rate and fatigue life is significantly reduced