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A nodal-based continuous-discontinuous deformation analysis method

文献类型：期刊论文

作者Yang, Yongtao1,2; Xia, Yang1,2
刊名COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
出版日期2024-03-01
卷号421页码:24
关键词Rock block system DDA method NCDDA method Rock failure
ISSN号0045-7825
DOI10.1016/j.cma.2024.116790
英文摘要In the present work, a nodal -based continuous -discontinuous deformation analysis (NCDDA) method is proposed to simulate the failure process of rock masses. A strategy of dividing the computational domain into "possible destructive region" and "non-destructive region" is proposed in the context of NCDDA method to model the failure process of jointed rock masses at the concerned region, as well as to reduce the computational consumption. In the non-destructive region, the failure of rock masses is not considered, and three -node triangular (Tria3) elements are adopted to discretize the corresponding physical domain. For the possible destructive area, although the corresponding physical domain is also discretized with Tria3 elements, artificial joint elements are adopted to connect adjacent Tria3 elements, and the failure of joint elements is used to characterize fracture initiation and propagation in rock masses. Furthermore, the contact potential which is used in the finite -discrete element method (FDEM) is adopted in the proposed NCDDA method to model large-scale opening and slipping of discontinuous interfaces. Compared to the traditional discontinuous deformation analysis (DDA) method, the difficulty to determine the type of contact can be avoided in the NCDDA method. Several benchmark problems and engineering problems are used to validate the proposed NCDDA method for rock mechanics problems. The numerical results show that the NCDDA method can effectively model the movement of rock block system, as well as rock failure processes from continuous stage to discontinuous stage in both experimental scale and engineering scale.
资助项目National Natural Science Foundation of China[12072357] ; National Natural Science Foundation of China[12272393] ; Youth Innovation Promotion Association CAS, China[2020327] ; Young Top-notch Talent Cultivation Program of Hubei Province
WOS研究方向Engineering ; Mathematics ; Mechanics
语种英语
WOS记录号WOS:001171584000001
出版者ELSEVIER SCIENCE SA
源URL[http://119.78.100.198/handle/2S6PX9GI/40801]  
专题中科院武汉岩土力学所
通讯作者Yang, Yongtao
作者单位1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Yongtao,Xia, Yang. A nodal-based continuous-discontinuous deformation analysis method[J]. COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING,2024,421:24.
APA Yang, Yongtao,&Xia, Yang.(2024).A nodal-based continuous-discontinuous deformation analysis method.COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING,421,24.
MLA Yang, Yongtao,et al."A nodal-based continuous-discontinuous deformation analysis method".COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING 421(2024):24.

入库方式： OAI收割

来源：武汉岩土力学研究所

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