Mechanical response of kerogen at high strain rates | |
Wang XH(王晓荷)1,2; Huang XF(黄先富)1,2; Gao MN(高梦霓)1,2; Zhao YP(赵亚溥)1,2 | |
通讯作者 | Zhao, Ya-Pu(yzhao@imech.ac.cn) |
发表期刊 | INTERNATIONAL JOURNAL OF IMPACT ENGINEERING |
2021-09-01 | |
卷号 | 155页码:8 |
ISSN | 0734-743X |
摘要 | As the main organic component of shale, the kerogen has a direct impact on the shale reservoirs. A molecular aggregate is used to study mechanical behaviour of kerogen, of which the molecular weight distribution is rational conforming to the Gaussian distribution. The mechanical response of kerogen is obtained with different strain rates by using molecular dynamics simulations. The results show that kerogen shows material hardening and fracture strain decrease with the strain rate. In the plastic range, we analyse the causes of stress oscillation at the microscopic level, and obtain the relationship between the stress oscillation and hydrogen bond. A compressible hyper-viscoelastic constitutive model of kerogen is established, which describes the mechanical behaviour of kerogen with different strain rates. Our research provides a valuable insight in the kerogen properties, and helps to understand the mechanical behaviour of shale reservoirs from a micro-perspective. |
关键词 | Kerogen aggregate in shale Strain rate Compressible hyper-viscoelasticity Constitutive model |
DOI | 10.1016/j.ijimpeng.2021.103905 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000670065800002 |
关键词[WOS] | REACTIVE FORCE-FIELD ; OIL-SHALE KEROGEN ; MOLECULAR-DYNAMICS ; REAXFF SIMULATIONS ; CHEMICAL-STRUCTURE ; ELASTIC PROPERTIES ; ORGANIC-MATTER ; BEHAVIOR ; MATURITY ; FAILURE |
WOS研究方向 | Engineering ; Mechanics |
WOS类目 | Engineering, Mechanical ; Mechanics |
资助项目 | National Natural Science Foundation of China (NSFC)[12032019] ; National Natural Science Foundation of China (NSFC)[11872363] ; National Natural Science Foundation of China (NSFC)[51861145314] ; Chinese Academy of Sciences (CAS) Key Research Program of Frontier Sciences[QYZDJ-SSW-JSC019] ; CAS Strategic Priority Research Program[XDB22040401] |
项目资助者 | National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) Key Research Program of Frontier Sciences ; CAS Strategic Priority Research Program |
论文分区 | 二类/Q1 |
力学所作者排名 | 1 |
RpAuthor | Zhao, Ya-Pu |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/87062 |
专题 | 非线性力学国家重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Wang XH,Huang XF,Gao MN,et al. Mechanical response of kerogen at high strain rates[J]. INTERNATIONAL JOURNAL OF IMPACT ENGINEERING,2021,155:8. |
APA | 王晓荷,黄先富,高梦霓,&赵亚溥.(2021).Mechanical response of kerogen at high strain rates.INTERNATIONAL JOURNAL OF IMPACT ENGINEERING,155,8. |
MLA | 王晓荷,et al."Mechanical response of kerogen at high strain rates".INTERNATIONAL JOURNAL OF IMPACT ENGINEERING 155(2021):8. |
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