Energy Dissipation and Damage Evolution Characteristics of Salt Rock under Uniaxial Cyclic Loading and Unloading Tension
| العنوان: | Energy Dissipation and Damage Evolution Characteristics of Salt Rock under Uniaxial Cyclic Loading and Unloading Tension |
|---|---|
| المؤلفون: | Lu Wang, Jianfeng Liu, Deng Chaofu, Zhide Wu, Hejuan Liu, Fukun Xiao, Anqi Zhu |
| المصدر: | Advances in Civil Engineering, Vol 2021 (2021) |
| بيانات النشر: | Hindawi Limited, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Yield (engineering), Materials science, Article Subject, Tension (physics), 0211 other engineering and technologies, 02 engineering and technology, Dissipation, Engineering (General). Civil engineering (General), 020303 mechanical engineering & transports, 0203 mechanical engineering, Acoustic emission, Ultimate tensile strength, Fracture (geology), TA1-2040, Composite material, Deformation (engineering), Displacement (fluid), 021101 geological & geomatics engineering, Civil and Structural Engineering |
| الوصف: | Salt rock has been regarded as the optimal surrounding rock for underground gas storage (UGS), and it is occasionally subjected to cyclic tension because of the gas injection and production of salt cavern, which leads to the change in mechanical properties of salt rock. In this paper, a laboratory study is conducted to investigate the energy dissipation and damage evolution characteristics of salt rock under uniaxial cyclic tension monitored by acoustic emission (AE) machine. Compared to monotonic tension, both tensile strength and deformation capacity of salt rock are enhanced under cyclic tension. The fracture crack is approximately a single linear crack with large elliptical plastic deformation zone, which is consistent with the spatial distribution of AE events. In yield stage, the proportion of dissipative energy increases first but decreases subsequently. The relationship between AE energy-based damage variable and displacement is established. It is concluded that the damage variable is a piecewise power correlation with displacement while the growth rate of damage variable increases in the pre-peak stage but decreases in post-peak stage. |
| وصف الملف: | text/xhtml |
| تدمد: | 1687-8094 1687-8086 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::174915cb1db583d944081a13bfd932f1 https://doi.org/10.1155/2021/6627959 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....174915cb1db583d944081a13bfd932f1 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 16878094 16878086 |
|---|