A Mixed Iteration Method to Determine the Linear Material Parameters in the Study of Creep Behavior of the Composites

Abstract

This paper presents and applies a mixed iteration method to determine the nonlinear parameters of the material used to study a composite’s creep behavior. To describe the research framework, we made a synthetic presentation of the viscoelastic behavior of composite materials by applying classical models. Further, the presented method was based on a calculation algorithm and program, which was applied on several types of materials. In a consecutive procedure of experiments and calculations, we determined the material parameters of the studied materials. The method was further applied to two composite materials in which the nonlinearity factors at different temperatures were determined.

Modeling Study of the Creep Behavior of Carbon-Fiber-Reinforced Composites: A Review

“…As essentially inhomogeneous materials that have a periodicity or certain symmetries in their structure, composite materials lend themselves very well to the application of these methods that determine the mechanical characteristics of a material. The experimental results validate the methods used by the theory of homogenization [ 55 , 56 , 57 , 58 , 59 ]. For this reason, the homogenization method has been used in numerous cases and engineering applications [ 33 , 34 , 36 , 37 , 39 , 40 , 41 , 59 ] to determine the mechanical properties of multiphase composites.…”

“…Schapery’s nonlinear constitutive equation for isothermal uniaxial loading conditions is used in the analysis, thus allowing us to consider the nonlinear viscoelastic response of the material. Papers that present many experimental results [ 55 , 56 , 57 , 58 , 59 ] demonstrate the potential of the method.…”

“…The model’s proposed offer results and a creep curve in the case of different loads. The results presented in this review are mainly based on the results obtained in [ 55 , 56 , 57 , 58 , 59 ].…”