Plastic Strain Energy Model for Rock Salt Under Fatigue Loading

作     者：M.M.He N.Li B.Q.Huang C.H.Zhu Y.S.Chen 

作者机构：Institute of Geotechnieal EngineeringXi'an University of TechnologyXi'an 710048China State Key Laboratory of Eco-hydraulics in Northwest Arid RegionXi'an University of TechnologyXi'an 710048China College of Information Engineering and AutomationKunming University of Science and TechnologyKunming 650500China Shaanxi Key Laboratory of Loess Mechanics and EngineeringXi'an University of TechnologyXi'an 710048China 

出 版 物：《Acta Mechanica Solida Sinica》 (固体力学学报（英文版）)

年 卷 期：2018年第31卷第3期

页      面：322-331页

核心收录：

学科分类：08[工学] 080104[工学-工程力学] 0815[工学-水利工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：sponsored by the National Natural Science Foundation of China(Nos.51179153 and 11572246) 

主　　题：Rock salt Fatigue life Plastic energy 

摘      要：The fatigue test for rock salt is conducted to investigate the effects of stress ampli- tude, loading frequency and loading rate on the plastic strain energy, from which the evaluation rule of the plastic strain energy is analyzed, which is divided into three stages： cyclic hardening, saturation and cyclic softening. The total accumulated plastic strain energy only depends on the mechanical behavior of rock salt, but is immune to the loading conditions. A novel model for fatigue life prediction is proposed based on the invariance of the total plastic dissipation energy and the stability of the plastic energy per cycle.