Accession Number:

ADA516833

Title:

Application of MCT Failure Criterion using EFM

Descriptive Note:

Final rept. 2 Dec 2008-2 Dec 2010

Corporate Author:

ASIAN OFFICE OF AEROSPACE RESEARCH AND DEVELOPMENT APO AP 96337-0007

Personal Author(s):

• Tay, Tong E.

Report Date:

2010-03-26

Pagination or Media Count:

19.0

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 HELIUSMCT code which uses material property degradation method MPDM. It is found that the conventional EFM-MCT code is less efficient than the HELIUSMCT 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.

Descriptors:

• *DAMAGE
• *FAILURE(ELECTRONICS)
• *COMPOSITE MATERIALS
• *CONTINUUM MECHANICS
• SINGAPORE
• EFFICIENCY
• ITERATIONS
• MULTIPHASE FLOW
• STRUCTURAL ANALYSIS
• DEGRADATION
• COMPUTATIONS
• ALGORITHMS
• COMPARISON

Subject Categories:

• Electrical and Electronic Equipment
• Laminates and Composite Materials
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE