Application of MCT Failure Criterion using EFM

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 subro...

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Bibliographic Details
Main Author: Tay, Tong E
Format: Report
Language:English
Subjects:
ALGORITHMS
COMPARISON
COMPOSITE AND MULTIPHASE MATERIALS
COMPOSITE MATERIALS
COMPUTATIONS
CONTINUUM MECHANICS
DAMAGE
DEGRADATION
EFFICIENCY
EFM(ELEMENT-FAILURE METHOD)
Electrical and Electronic Equipment
FAILURE(ELECTRONICS)
FOREIGN REPORTS
ITERATIONS
Laminates and Composite Materials
MCT(MULTI-CONTINUUM THEORY)
Mechanics
MULTIPHASE FLOW
SINGAPORE
STRUCTURAL ANALYSIS
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Summary: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.