Journal
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
Volume 24, Issue 2, Pages 243-252Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.euromechsol.2004.11.007
Keywords
quasi-continuum constitutive model; virtual internal bond model; crack growth
Categories
Ask authors/readers for more resources
A new quasi-continuum constitutive model is established based on the randomized cohesive bonds model proposed by Gao and Klein (1998). This model bridges the microscopic discrete constitution characters and the macroscopic mechanical properties of material. In the presented constitutive model, both the bond stretch energy potential and the rotation energy potential are considered, which makes the presented constitutive model applicable to different Poisson-ratio and Young's modulus materials. By establishing a phenomenological bond stiffness function according to the complete stress-strain relationship of uniaxial tension test, the fracture criterion is directly incorporated into the constitutive model. The method requires no external fracture criterion when simulating fracture initiation and propagation, which brings convenience in the numerical simulation. At last, the presented constitutive model is applied to an example of crack growth in an isotropic solid. (c) 2004 Elsevier SAS. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available