Mechanical response of kerogen at high strain rates

doi:10.1016/j.ijimpeng.2021.103905

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	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
刊名	INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
	2021-09-01
卷号	155 页码:8
关键词	Kerogen aggregate in shale Strain rate Compressible hyper-viscoelasticity Constitutive model
ISSN号	0734-743X
DOI	10.1016/j.ijimpeng.2021.103905
通讯作者	Zhao, Ya-Pu(yzhao@imech.ac.cn)
英文摘要	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.
分类号	二类/Q1
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]
WOS关键词	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
语种	英语
WOS记录号	WOS:000670065800002
资助机构	National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) Key Research Program of Frontier Sciences ; CAS Strategic Priority Research Program
其他责任者	Zhao, Ya-Pu
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/87061]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, 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.