A micromechanical approach for the analysis of damage in laminated composite structures

✍ Scribed by Raimondo Luciano; Raffaele Zinno

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 244 KB
• Volume: 74
• Category: Article
• ISSN: 0045-7949
• DOI: 10.1016/s0045-7949(98)00292-2

✦ Synopsis

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 ®nite element approximation, is developed. In particular, the material stiness 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.