محمدامين ابهت

Material degradation models are used as one of the three main parts of progressive damage analysis in the failure analysis of laminated composites. The objective of the current research is a complete review of different material degradation models and to provide analysis and eva‎luation of them. For the eva‎luation, several valid failure criteria and material degradation models are selected to simulate different progressive damage analyses by The ABAQUS software. In conclusion, during several progressive damage analyses, sensitivity to load step, correctness and accuracy of failure load prediction, compatibility with different failure criteria, and the growth of damage zone were calculated and eva‎luated. For a group of material degradation models, a loading step of 0.1 and for another model, a loading step of 0.05 reports the most accurate load failure prediction. In addition, the material degradation models that are defined based on the reduction in stiffness matrix components have the most compatibility with different criteria as well as the uniform growth of damage zone.

تحليل خرابي , تخريب پيش‌رونده , كامپوزيت چندلايه , معيار خرابي , مدل كاهش خواص

Material degradation model , Failure analysis , Progressive damage analysis , laminated composite , failure criterion

Mohammad Amin Obohat

Mahmood Mehrdad Shokrieh