Session: 03-03-02: Damage, Fatigue, and Fracture

Paper Number: 107090

107090 - A Multi-Mechanism Framework for Cure-Informed Probabilistic Progressive Failure Analysis of Composite Structures 

This paper presents a finite element (FE) - based framework to perform integrated cure and progressive failure analyses of fiber-reinforced polymers. This framework goes beyond the unit cell and is applicable to laminate scales with various layups, geometries and loading cases. Cure residual stresses are calculated using a coupled chemo-thermo-mechanical analysis, where the cure-hardening/ instantaneous linear elastic (CHILE) constitutive model is used to capture the hardening evolution of the matrix. After the residual stresses are calculated, a progressive failure analysis step is performed, based on the semi-discrete modeling technique. Through a smart meshing strategy, a failure separation, a probabilistic modeling approach and a mesh-objective constitutive model, the enhanced semi-discrete damage model (eSD2M) is capable of capturing major failure modes as well as failure loads with good accuracy.

Presenting Author: Minh Hoang Nguyen University of Michigan

Presenting Author Biography: Hoang is a Postdoctoral Research Fellow at the Department of Aerospace Engineering of the University of Michigan. He holds a PhD in Aerospace Engineering from UM, a Master's degree in Aeronautics and Astronautics and a B.Sc. in Mechanical Engineering from the Technical University of Berlin.

Authors:

Minh Hoang Nguyen University of Michigan
Royan Dmello University of Michigan
Anthony Waas University of Michigan