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

Paper Number: 136303

136303 - Calibration of Advanced Composite Materials in a Multiscale Framework 

One of the challenges of advanced structural simulations with finite element analysis (FEA) is knowing how to represent the materials in the structure. In characterizing unidirectional composite lamina, it is common to use handbook data for the fiber properties, for the matrix properties and to test one or more coupons (specimens) cut from the lamina. Of these three pieces of information, it is typical to trust the fiber properties and the coupon testing data more than the matrix handbook data. This work explains how non-homogeneous and non-isotropic material test data like the composite materials can be calibrated using the developed calibration tool. It shows the creation of a mean-field homogenization (MFH) material model for a transversely isotropic unidirectional composite lamina. The MFH approach is based on analytical formulation and used for multiscale material modeling to model composite materials. This approach can calculate composite responses using properties of the constituents; it can also decompose the composite strain into constituent strains and compute the constituent-level responses. The mean-field homogenization approach can be useful to predict behaviors of fiber-reinforced composite assembly parts manufactured through the injection molding process; it can also be useful to model progressive failure of fiber-reinforced composites by modeling damage at the constituent level.

Presenting Author: Deepak Kumar Patel Dassault Systemes Americas Corp

Presenting Author Biography: I completed my Ph.D. at the Composite Structures Laboratory, Department of Aerospace Engineering at University of Michigan, Ann Arbor and continued as Visiting Research Scientist at University of Washington, Seattle. Joined Dassault Systemes Simulia team in 2018 and helping HighTech, Life Science and Aerospace engineers to provide technical solutions. I am passionate about solving structural mechanics problems of practical interest by supplementing my engineering and computational skills. My research is intended to characterize the conventional laminated composites and advanced composite materials like 3D textile composites by carrying out the progressive damage and failure analysis. The scope of my research work includes finite element stress analysis verified by analytical hand calculations, image analysis, development of user defined material subroutines and multiscale simulations, supplemented by experimental validations.