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- Title
Finite Element Simulations of the Localized Failure and Fracture Propagation in CohesiveMaterials with Friction.
- Authors
Chengbao Hu; Shilin Gong; BinChen; Zhongling Zong; Xingwang Bao; Xiaojian Ru
- Abstract
Strain localization frequently occurs in cohesive materials with friction (e.g., composites, soils, rocks) and is widely recognized as a fundamental cause of progressive structural failure.Nonetheless, achieving high-fidelity simulation for this issue, particularly concerning strong discontinuities and tension-compression-shear behaviors within localized zones, remains significantly constrained. In response, this study introduces an integrated algorithmwithin the finite element framework, merging a coupled cohesive zonemodel (CZM) with the nonlinear augmented finite elementmethod (N-AFEM). The coupledCZMcomprehensively describes tension-compression and compressionshear failure behaviors in cohesive, frictional materials, while the N-AFEM allows nonlinear coupled intraelement discontinuities without necessitating extra nodes or nodal DoFs. Following CZM validation using existing experimental data, this integrated algorithm was utilized to analyze soil slope failure mechanisms involving a specific tensile strength and to assess the impact of mechanical parameters (e.g., tensile strength, weighting factor, modulus) in soils.
- Subjects
CRACK propagation (Fracture mechanics); TENSILE strength; FRICTION materials; COHESIVE strength (Mechanics); IMPACT strength; FRICTION; STRUCTURAL failures
- Publication
CMES-Computer Modeling in Engineering & Sciences, 2024, Vol 140, Issue 1, p997
- ISSN
1526-1492
- Publication type
Article
- DOI
10.32604/cmes.2024.048640