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EnglishA quasi-brittle damage model for composite material is presented to analyze progressive failure in composite structures. A rate independent constitutive law is expressed in terms of three damage parameters by using several polynomial failure criteria and a suitable micromechanical model. In order to follow the damage evolution of laminated composite plates subject to monotonic loads, a numerical procedure, based on a finite element approximation, is developed. In particular, the material stiffness reduction is computed by the proposed damage model and the number of global degrees of freedom is reduced by using `clusters of laminae'. Finally, both numerical and experimental data available in literature are compared with the results obtained by the proposed numerical procedure.
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| Titolo: | Micromechanical approach for the analysis of damage in laminated composite structures |
| Autori: | |
| Data di pubblicazione: | 2000 |
| Rivista: | |
| Abstract: | A quasi-brittle damage model for composite material is presented to analyze progressive failure in composite structures. A rate independent constitutive law is expressed in terms of three damage parameters by using several polynomial failure criteria and a suitable micromechanical model. In order to follow the damage evolution of laminated composite plates subject to monotonic loads, a numerical procedure, based on a finite element approximation, is developed. In particular, the material stiffness reduction is computed by the proposed damage model and the number of global degrees of freedom is reduced by using `clusters of laminae'. Finally, both numerical and experimental data available in literature are compared with the results obtained by the proposed numerical procedure. |
| Handle: | http://hdl.handle.net/11580/21381 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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