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Fiber damage; matrix damage; fiber-matrix debonding; delamination; mixed loading condition; multi-fiber multi-layer representative volume element.

This paper is aimed at incorporating all possible micro-scale damage mechanisms, namely, fiber failure, matrix cracking, fiber-matrix debonding and delamination in multi-fiber multi-layer representative volume element (M²RVE) subjected to multi-axial loading. Different loading conditions have been selected toinduce a particular or combined damage mechanism/s to study the damage evolution. The predicted constitutive material responses for tensile and in-plane shear loading by M²RVE are in reasonably good agreement with theexperimental results. M²RVE then used for capturing all the microscale damage mechanisms even for complex multi-axial loading. The stress–strain responses have been effectively captured for different combinations of dominant damage mechanisms.

GANESH SONI¹ RAMESH SINGH² MIRA MITRA³ WENYI YAN⁴

1. Department of Mechanical Engineering, IITB-Monash Research Academy, Mumbai, India
2. Department of Mechanical Engineering, Indian Institute of Technology Bombay, Mumbai, India
3. Department of Aerospace Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India
4. Department of Mechanical and Aerospace Engineering, Monash University, Melbourne, Australia

Published

March 2020

Manuscript received

26 May 2019

Manuscript revised

13 November 2019

Accepted

10 January 2020

Final version published online

4 March 2020