ANALYSIS OF THE MECHANICAL BEHAVIOUR IN SHEAR OF WOVEN FABRIC REINFORCED COMPOSITE UNDER UNIAXIAL TENSION

摘要

This study presents the analysis of the mechanical behaviour of woven fabric composite (glass/polymer matrix) subjected to the combined action of mechanical, thermal and hygroscopic loading. It has an objective at analysing the mechanical response of woven fabric composite satured at different relative humidities 0, 60 and 96% RH at 60℃.The non linearity observed of mechanical behaviour in shear under uniaxial tension for the specimens oriented at 45° tested test at 45° has plastic nature.The law exponentiel proposed for the tangent shear modulus has plastic nature and refers to the plastic flow of the matrix. This model precises the evolution of the tangent shear modulus depending on the mechanical state characterized by the shear strain.This model provides a framework to quantitatively study the effects of environmental conditions such as moisture or temperature on the mechanical response in shear of composite materials.