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Automated Delamination Onset and Growth Prediction in Composite Structures

Award Information

Agency:
Department of Defense
Branch:
Air Force
Award ID:
79053
Program Year/Program:
2007 / SBIR
Agency Tracking Number:
F061-092-1317
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 2007
Title: Automated Delamination Onset and Growth Prediction in Composite Structures
Agency / Branch: DOD / USAF
Contract: FA8650-07-C-5015
Award Amount: $750,000.00
 

Abstract:

An automatic software tool for damage tolerance assessment and residual strength prediction of composite structures based on the extended finite element (XFEM) will be developed. This tool will for the first time be able to model arbitrary 2D/3D delamination crack growth without remeshing. The automated tool will be integrated with the ABAQUS implicit solver via its user-defined subroutines. GEM has secured commitments for technical support and commercialization assistance from LM Aero, Bell Helicopter, ABAQUS, and MSC. Our consultant, Professor Ted Belytschko, who pioneered XFEM, will aid in basic theory development, tool development, and provide existing XFEM solution modules that are relevant to delamination failure prediction. The XFEM methodology for a 2D delamination crack was demonstrated in Phase I. The unique features of the Phase II software product are: 1) the capability for arbitrary insertion of multiple initial delamination cracks into any finite element mesh at either element boundaries or within elements via a PATRAN GUI; 2) simulation of arbitrary crack growth without remeshing; 3) accurate extraction of strain energy release (SERR) rate along an arbitrary crack front with or without closure via a modified VCCT technique; and 4) characterization of delamination onset and growth results via PATRAN and ABAQUS's CAE.

Principal Investigator:

Jim Lua
Senior Principal Scientis
8603985620
jlua@gem-consultant.com

Business Contact:

Jim Lua
President
8603674970
jlua@gem-consultant.com
Small Business Information at Submission:

GLOBAL ENGINEERING & MATERIALS, INC.
9 Glodfinch Terrace East Lyme, CT 06333

EIN/Tax ID: 061628123
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No