Abstract
In this study we developed a computational approach by implementing the damage models proposed by authors for simulating the damage evolution and mechanical properties of random short fiber composites according to the respective characteristics of the matrix, the reinforcement and the volume fraction. Material damage induced by fiber de-bonding is considered. A comparison between the different existing models of homogenization was performed to determine the model that best reflects the response of our study material. And furthermore a range of simulations was carried out to study the influence of various parameters of the composite for predicting the response of the material and damage evolution.
Highlights
Composite materials are increasingly used in several fields like automotive industry and aeronautic.In the automotive field, the race for energy savings and limitations of pollutant emission is a growing interest on the part of manufacturers and suppliers for the use of materials with low densities
The model built on the basis of the homogenization method of Mori-Tanaka is best suited for estimating the elastic properties of the material studied
We find that for a volume fraction of 18%, corresponding to our material, tensile modulus E1 is equals to 14,640 MPa
Summary
Composite materials are increasingly used in several fields like automotive industry and aeronautic. The race for energy savings and limitations of pollutant emission is a growing interest on the part of manufacturers and suppliers for the use of materials with low densities. Made of materials with complementary characteristics, composites appear as good candidates to meet all these requirements. It is in this context that the study of the mechanical behavior of composite materials under dynamic loading is necessary. Composite materials are generally characterized by greater specific strength than metallic materials and have high energy dissipation (Lemaitre and Dufailly, 1987)
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