Bonded Joint Analysis Method

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$79,999.00
Award Year:
2012
Program:
STTR
Phase:
Phase I
Contract:
N68335-12-C-0378
Award Id:
n/a
Agency Tracking Number:
N12A-004-0051
Solicitation Year:
2012
Solicitation Topic Code:
N12A-T004
Solicitation Number:
2012.A
Small Business Information
Global Engineering and Materials, Inc. (Currently Global Engineering and Materials, Inc)
11 Alscot Drive, East Lyme, CT, 06333-
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
610056405
Principal Investigator:
Jim Lua
President
(860) 398-5620
jlua@gem-innovation.com
Business Contact:
Jim Lua
President
(860) 398-5620
jlua@gem-innovation.com
Research Institution:
Virginia Tech
Romesh C Batra
Engineering Sci. and Mechanics
Virginia Tech
Blacksburg, VT, 24061-
(540) 231-6051
Nonprofit college or university
Abstract
A combined discrete cohesive interface fracture and continuum damage mechanics initiation and propagation toolkit for Abaqus will be developed for the residual strength prediction of adhesively bonded composite structures subjected to multi-axial loading. This tool will allow us, for the first time, to be able to simulate concurrently both the continuum and discrete damage progression at the bonded interface and in the adhesive, respectively, under multiaxial loading. To capture the highly nonlinear material constitutive response and the environmentally-driven mechanical properties along the bondline, the adhesive layer will be characterized explicitly without introducing a smearing procedure. An advanced cohesive fracture model will be developed to account for the combined energy dissipation from decohesion, frictional sliding, and yielding. A hydrostatic stress dependent plasticity model coupled with a continuum shell description will be implemented to capture the damage accumulation in a thin adhesive layer subjected to a combined tension/compression/shear loading. Testing will be performed to identify model parameters and to validate the toolkit at coupon and component levels. GEM has secured commitments for technical support from Virginia Tech, Lockheed Martin, Sikorsky, and Air Force Research Lab.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government