Abstract
This paper presents an elasto-plastic damage model that is based on irreversible thermodynamics and internal state variable formalism for the analysis of multi-layered composites. The model is based on a damage surface that is defined in terms of an internal damage variable of energy, along with a set of rate-independent elasto-plastic constitutive equations defined in an effective stress-strain space. Employing the operator splitting methodology, a three-step predictor/multi-corrector algorithm is developed that includes an elastic predictor, a plastic corrector, and a damage corrector. The constitutive model is cast in a co-rotational kinematic framework for damage analysis in laminated plates and shells undergoing large deflections. Numerical examples are presented to demonstrate the accuracy and range of applicability of the proposed model.
Original language | English (US) |
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Pages (from-to) | 2641-2660 |
Number of pages | 20 |
Journal | Computer Methods in Applied Mechanics and Engineering |
Volume | 194 |
Issue number | 21-24 SPEC. ISS. |
DOIs | |
State | Published - Jun 10 2005 |
Externally published | Yes |
Keywords
- Co-rotational framework
- Elastic damage
- Elasto-plastic damage
- Finite rotations
- Laminated composites
- Nonlinear finite elements
ASJC Scopus subject areas
- Computational Mechanics
- Mechanics of Materials
- Mechanical Engineering
- Physics and Astronomy(all)
- Computer Science Applications