Calculation of Stress-Strain Curves of Fabric Reinforced Composite Materials using the Endochronic Theory of Plasticity

Authors: Sarbaev B.S., Baryshev A.N. Published: 03.08.2017
Published in issue: #4(115)/2017  

DOI: 10.18698/0236-3941-2017-4-65-75

Category: Mechanics | Chapter: Mechanics of Deformable Solid Body  
Keywords: composite material, fabric reinforcement, stress-strain curve, endochronic theory of plasticity, physical nonlinearity, parameter identification, plane stress state

The article gives a brief overview of mathematical models of orthotropic materials’ nonlinear deformation. We propose an endochronic model of nonlinear deformation of fabric reinforced composite material in plane stress state. Experimental results made it possible to find three unrelated deformation mechanisms - deformation in warp direction, deformation in weft direction and inplane shear. We give mathematical expressions and describe procedure of calculating model parameters. The study also shows the simulation results of nonlinear deformation of different fabric reinforced composites.


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