Issue 50

F. Larbi Chaht et alii, Frattura ed Integrità Strutturale, 50 (2019) 331-341; DOI: 10.3221/IGF-ESIS.50.28 331 Using a Hashin Criteria to predict the Damage of composite notched plate under traction and torsion behavior Fouzia Larbi Chaht, Mohamed Mokhtari, Habib Benzaama Ecole Nationale Polytechnique Maurice Audin, Algeria fouzialose@hotmail.com, mokhtarimohamed44@yahoo.fr, Habenza@yahoo.fr A BSTRACT . The volume fraction effect of carbon fiber in an epoxy matrix in the vicinity of the notch on the traction and torsion behavior were studied. This volume fraction which increases with the reduction of the thickness is a parameter which proved effective on the capacity of resistance. The calculations are done with the numerical code ABAQUS 2009 [1]. using the model Hashin with shell elements of the structure. The objective of this study is to simulate the damage of stratified composite materials, the effect of several parameters such as the stacking sequence and the increase of the thickness of the folds having the same orientation of the structure, were evaluated and presented by load-displacement curves. The results obtained from the study illustrate the variation of damage as a function of these effects which act simultaneously and which also show that these modifications have a higher absorption capacity than that without modifications. K EYWORDS . FEM (Finite Element Method); Hashin criteria; Shell element; Reinforcement. Citation: Larbi Chaht, F., Mokhtari, M., Benzaama, H., Using a Hashin Criteria to predict the Damage of composite notched plate under traction and torsion behavior, Frattura ed Integrità Strutturale, 50 (2019) 331-341. Received: 16.05.2019 Accepted: 18.08.2019 Published: 01.10.2019 Copyright: © 2019 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. I NTRODUCTION he use of composite materials has been increasing since their appearance. This use is justified by many advantages, the most remarkable is the relationship between resistance and weight saving. Composite materials are an important research area (report 1989) [2], from which many researchers are attracted by the study of their damage [3]. This gives them special importance for the design, production, certification and monitoring of a growing variety of structures. In laminates there is a diversity in the mechanisms of damage produced by several parameters. These parameters are probably affected by the presence of the notch which causes an imbalance of the resistance around their zones. Studies have been conducted by researchers to better characterize this phenomenon. Lu studied the phenomenon of concentration and distribution of stresses around a hole [4]. Subsequently, analytical solutions have been progressively developed by researchers for increasingly complex geometries. Madani [5] have greatly contributed to the knowledge and development of this field by performing a systematic analysis of the main geometries and shapes. T