文献类型：期刊文献

英文题名：Study on the Influence of Different Prophase Stress Levels on the Fatigue Damage Characteristics of Granite

作者：Wang, Tianzuo[1,2];Xue, Mengya[1,2];Sha, Peng[1,2];Xue, Fei[1,2];Wang, Linxiang[1,2]

机构：[1]Shaoxing Univ, Coll Civil Engn, Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing 312000, Zhejiang, Peoples R China;[2]Zhejiang Collaborat Innovat Ctr Prevent & Control, Shaoxing 312000, Zhejiang, Peoples R China

年份：2021

卷号：2021

外文期刊名：SHOCK AND VIBRATION

收录：SCI-EXPANDED(收录号：WOS:000665766300003)、、EI(收录号：20212610557994)、Scopus(收录号：2-s2.0-85108458631)、WOS

基金：The authors would like to acknowledge the financial support for this study supported by the Second Tibetan Plateau Scientific Expedition and Research Program (grant no. 2019QZKK0904), the National Natural Science Foundation of China (grant no. 42007254 and 41831290), the Natural Science Foundation of Zhejiang Province (grant no. LQ20E080006), and the General Research Project of Zhejiang Education Department (grant no. Y202043108).

语种：英文

外文关键词：Energy dissipation - Fatigue damage - Fatigue testing - Granite - Rock mechanics

外文摘要：In order to reveal the influence of prophase stress levels on the fatigue damage characteristics of granite, uniaxial fatigue tests of granite with different prophase stress levels were carried out on the basis of the MTS 815.04 rock mechanics test system. The results show that, under the same number of cycles, the failure degree increases with the increase of the prophase stress level. Under the low upper limit of cyclic stress, the tangent modulus and dissipated energy increase significantly with the increase of prophase stress level at the early stage of the cycle loading, while the increasing trend is not obvious with the increase of prophase stress level at the late stage. Under the high upper limit of cyclic stress, the tangent modulus and dissipated energy are less affected by the prophase stress level. The development trend of elastic release energy is not obvious with the increase of prophase stress level, which is less affected by the number of cycles. From the damage parameters defined by dissipative energy, under the low upper limit of cyclic stress, the initial damage is less affected by the prophase stress level. With the increase of the number of cycles, the influence of the prophase stress level on the development trend of the damage variable increases gradually. And the development trend of damage variables shows "C-shaped" damage.