Accession Number:

ADA608146

Title:

An Orthotropic Model for Composite Materials in EPIC

Descriptive Note:

Final rept. 20 Dec 2012-15 Jun 2014

Corporate Author:

SOUTHWEST RESEARCH INST MINNEAPOLIS MN

Personal Author(s):

Report Date:

2014-06-06

Pagination or Media Count:

39.0

Abstract:

Orthotropic plasticity and failure were added to the existing orthotropic elasticity model in EPIC for the purpose of modeling impact loading of composites. Plasticity is represented by the Hill yield function with an associated flow rule, and failure is indicated when any component of the plastic natural-strain tensor exceeds its critical value. Example computations are included to demonstrate the model and its applicability to composites under ballistic impacts.

Subject Categories:

  • Laminates and Composite Materials
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE