Application of MCT Failure Criterion using EFM

Abstract

This document describes the work done in National University of Singapore to implement the Multi-Continuum Theory (MCT) of composite failure for damage progression analysis using the Element-Failure Method (EFM) in ABAQUS. The EFM-MCT has been implemented in ABAQUS using a user defined element subroutine EFM. Comparisons have been made between the analysis results using EFM-MCT code and HELIUS:MCT code which uses material property degradation method (MPDM). It is found that the conventional EFM-MCT code is less efficient than the HELIUS:MCT code. This is due to the iterative nature of the EFM code in finding the solution. A non-iterative element-failure method (N-EFM) is then developed to improve the computational efficiency. This N-EFM-MCT has been implemented in an in-house code and comparison of computational efficiency has been made between N-EFM and MPDM.

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Document Details

Document Type
Technical Report
Publication Date
Mar 26, 2010
Accession Number
ADA516833

Entities

People

  • Tong E. Tay

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Climate Change
  • Composite Materials
  • Degradation
  • Efficiency
  • Engineering
  • Equations
  • Fiber Reinforced Composites
  • Laminates
  • Material Degradation Processes
  • Materials
  • Mechanics
  • Micromechanics
  • Procedures (Computers)
  • Stress Strain Relations
  • Stresses
  • Thermal Analysis
  • Thermal Expansion

Fields of Study

  • Engineering

Readers

  • Astronomy/Astrophysics
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Structural Health Monitoring of Composite Structures.