Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Entire DC Network
Mechanical Properties And Damage Constitutive Model Of Coal Under The Coupled Hydro-Mechanical Effect, Bo-Bo Li, Zhong-Hui Wang, Chong-Hong Ren, Yao Zhang, Jiang Xu, Jian-Hua Li
Mechanical Properties And Damage Constitutive Model Of Coal Under The Coupled Hydro-Mechanical Effect, Bo-Bo Li, Zhong-Hui Wang, Chong-Hong Ren, Yao Zhang, Jiang Xu, Jian-Hua Li
Rock and Soil Mechanics
In order to explore the impact of moisture on the mechanical properties of coal, the triaxial compression tests of raw coal with different moisture contents are carried out by using the triaxial servo-controlled seepage equipment for thermal-hydro- mechanical coupling in coal containing methane. Based on elastic damage mechanics, the damage variables of coal with different moisture contents are deduced, and the damage constitutive model of coal under hydro-mechanical coupling is established, the deformation characteristics of coal with different moisture contents are obtained. The results show that: (1) the deformation and failure process of coal under different moisture contents are similar, …
An Investigation Of The Mechanical Properties Of Sandstone Under Coupled Static And Dynamic Loading, Lei Wen, Xu-Li Liang, Wen-Jie Feng, Wei Wang, Liang Wang, Jiang-Fang Chang, Wei Yuan
An Investigation Of The Mechanical Properties Of Sandstone Under Coupled Static And Dynamic Loading, Lei Wen, Xu-Li Liang, Wen-Jie Feng, Wei Wang, Liang Wang, Jiang-Fang Chang, Wei Yuan
Rock and Soil Mechanics
Through the application of SHPB (split Hopkinson pressure bar) test, this research firstly analyzed the law of damage under the cyclical impact on grey sandstone samples with the condition of static load. After that, to obtain the sample failure mode and speculate the relationship between dynamic stress and strain, the static-dynamic loading experiments on pre-damaged rock samples were also performed. Finally, based on the principle of strain equivalence, the total damage variable under the condition of static-dynamic loading was analyzed to derive the damage evolution equation to explain the relation of damage constitutive. Based on above tests, the research suggests: …