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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
Corresponding AuthorZhao, Ya-Pu(yzhao@imech.ac.cn)
Source PublicationINTERNATIONAL JOURNAL OF IMPACT ENGINEERING
2021-09-01
Volume155Pages:8
ISSN0734-743X
AbstractAs 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.
KeywordKerogen aggregate in shale Strain rate Compressible hyper-viscoelasticity Constitutive model
DOI10.1016/j.ijimpeng.2021.103905
Indexed BySCI ; EI
Language英语
WOS IDWOS:000670065800002
WOS KeywordREACTIVE FORCE-FIELD ; OIL-SHALE KEROGEN ; MOLECULAR-DYNAMICS ; REAXFF SIMULATIONS ; CHEMICAL-STRUCTURE ; ELASTIC PROPERTIES ; ORGANIC-MATTER ; BEHAVIOR ; MATURITY ; FAILURE
WOS Research AreaEngineering ; Mechanics
WOS SubjectEngineering, Mechanical ; Mechanics
Funding ProjectNational 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]
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) Key Research Program of Frontier Sciences ; CAS Strategic Priority Research Program
Classification二类/Q1
Ranking1
ContributorZhao, Ya-Pu
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/87062
Collection非线性力学国家重点实验室
Affiliation1.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
Recommended Citation
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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