Session: 03-08-01: Micromechanics and Multiscale Modeling I

Paper Number: 107324

107324 - Multiscale Analysis of Combined Progressive Damage and Thermal Conductivity in a 3d Woven Thermal Protection System Composite 

A Multiscale Recursive Micromechanics model is presented for combined thermal conductivity and progressive damage analysis of a 3D woven thermal protection system composite material.  The effects of the progressive damage on the evolving 3D woven composite thermal conductivity are captured.  The Multiscale Recursive Micromechanics approach enables micromechanics models to call other micromechanics models (or themselves recursively) to consider finer and finer length scales.  As such, the multiscale models can explicitly consider the matrix and fibers within the tows at one length scale, while also considering the geometry of the woven composite repeating unit cell.  Further, the woven thermal protectection system composite matrix material is highly porous.  The pore microstucture is also explicitly modeled at a lower length scale in the presented multiscale model.  Results focus on the impact of the effect of the progressive damage within the porous matrix on the 3D woven composite’s effective thermal conductivity, along with the local thermal flux and temperature fields induced in the microstructures.

Presenting Author: Brett Bednarcyk NASA Glenn Research Center

Presenting Author Biography: Dr. Brett A. Bednarcyk is a Material Research Engineer at NASA Glenn Research Center, Cleveland, OH. His research centers on multiscale modeling of composite and other heterogeneous materials.

Authors:

Brett Bednarcyk NASA Glenn Research Center
Peter Gustafson Western Michigan University
Trenton Ricks NASA Glenn Research Center
Evan Pineda NASA Glenn Research Center
Pappu Murthy NASA Glenn Research Center
Subodh Mital NASA Glenn Research Center