An improved numerical manifold method incorporating hybrid crack element for crack propagation simulation

doi:10.1007/s10704-016-0084-z

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	An improved numerical manifold method incorporating hybrid crack element for crack propagation simulation
	He, Jun 1,2; Liu, Quansheng 1,3; Ma, Guowei 2; Zeng, Bin 2,4
刊名	INTERNATIONAL JOURNAL OF FRACTURE
	2016
卷号	199 期号:1 页码:21-38
关键词	Numerical manifold method Hybrid crack element Stress intensity factor Crack propagation
ISSN号	0376-9429
DOI	10.1007/s10704-016-0084-z
英文摘要	The numerical manifold method (NMM) simulates continuous and discontinuous problems in a unified framework; thus NMM has advantages in analysing crack propagation. However, calculation of the stress intensity factors (SIFs) when adopting the NMM requires additional procedures, such as the J-integral and the interaction integral. In this study, a hybrid crack element (HCE) method is incorporated into the NMM to directly obtain the SIFs; the new algorithm combines the merits of both the NMM and HCE method. In the proposed algorithm, the HCE is used in the crack-tip region while the NMM is applied in the remaining region. The SIFs at the crack-tip are calculated directly from the solution of the governing equation with less computational complexity relative to existing methods. The proposed algorithm does not require any changes to the initial mesh during crack propagation. It is verified by a few examples and the results show that the simulated crack propagation paths are in good agreement with the results from existing studies while the computational efficiency is improved due to the direct calculation of the SIFs and the consistency of the mesh system in the crack propagation process.
WOS研究方向	Materials Science ; Mechanics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000374340900002
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3865]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Wuhan Univ, Sch Civil Engn ; 2.Univ Western Australia, Sch Civil Environm & Min Engn; 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 4.Chongqing Univ, Sch Civil Engn
推荐引用方式 GB/T 7714	He, Jun,Liu, Quansheng,Ma, Guowei,et al. An improved numerical manifold method incorporating hybrid crack element for crack propagation simulation[J]. INTERNATIONAL JOURNAL OF FRACTURE,2016,199(1):21-38.
APA	He, Jun,Liu, Quansheng,Ma, Guowei,&Zeng, Bin.(2016).An improved numerical manifold method incorporating hybrid crack element for crack propagation simulation.INTERNATIONAL JOURNAL OF FRACTURE,199(1),21-38.
MLA	He, Jun,et al."An improved numerical manifold method incorporating hybrid crack element for crack propagation simulation".INTERNATIONAL JOURNAL OF FRACTURE 199.1(2016):21-38.