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Numerical simulation of ductile crack growth under cyclic and dynamic loading with a damage-viscoplasticity model
Khoei, A. R ; Sharif University of Technology | 2013
1179
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- Type of Document: Article
- DOI: 10.1016/j.engfracmech.2012.12.009
- Publisher: 2013
- Abstract:
- In this paper, the crack propagation in ductile materials is simulated under cyclic and dynamic loading. The adaptive finite element method is used to model the discontinuity due to crack propagation. The ductile fracture assumptions and continuum damage mechanics are utilized to model the material rupture behavior. Moreover both the rate-independent and rate-dependent constitutive equations are elaborated and the crack closure effect and combined hardening model are discussed in addition to some aspects of finite element implementation. Finally, a comparison is performed between the numerical simulation results and those of experiments to illustrate the robustness of proposed computational algorithm
- Keywords:
- Crack closure effect ; Ductile crack propagation ; Dynamic/cyclic loading ; Rate-dependent visco-plasticity ; Adaptive finite element methods ; Combined hardenings ; Computational algorithm ; Crack closure effects ; Ductile crack growth ; Ductile materials ; Finite element implementation ; Rate independents ; Computer simulation ; Continuum damage mechanics ; Crack propagation ; Cracks ; Ductile fracture ; Dynamic loads ; Finite element method ; Loading
- Source: Engineering Fracture Mechanics ; Volume 99 , 2013 , Pages 169-190 ; 00137944 (ISSN)
- URL: http://www.sciencedirect.com/science/article/pii/S0013794412004705