Analysis Tool to Predict the Behavior of Bolted Composite/Metallic Hybrid Joints with Many Fasteners - P4422

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-19-P-2040
Agency Tracking Number: F182-062-1213
Amount: $149,986.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: AF182-062
Solicitation Number: 2018.2
Solicitation Year: 2018
Award Year: 2019
Award Start Date (Proposal Award Date): 2019-02-28
Award End Date (Contract End Date): 2020-02-28
Small Business Information
135 Rock Road, Horsham, PA, 19044
DUNS: 075537910
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Jaco Schutte
 (215) 542-8400
Business Contact
 Thomas Cassin
Phone: (215) 542-8400
Research Institution
An improved understanding of the structural behavior of a composite bolted joint can yield weight and cost savings by enabling the designer to eliminate any unnecessary conservatism.Software tools for the design and analysis of large scale structural bolted joint assemblies of composite laminates are required to be robust, accurate and computationally efficient models to be useful in a military or commercial design environment.The proposed approach applies multi-fidelity modeling to manage the computational expense of solving these complex and challenging problems. A set of validated analysis tools will be developed by the investigators, combining various simulation approaches such as 3D FEA models, shell-based models with spring and gap elements to replace bolt connections and calibrated analytical models for nonlinear spring and gap element type models. Damage induced compliance changes in the laminate and its effect on the load redistribution among the fasteners will also be captured in the modeling toolset. In addition these analytical tools will be utilized to investigate the use of metallic foil reinforcements around bolt holes for predicting the failure behavior of multi-row bolted composite joints of hybrid materials such as carbon fiber laminates with interspersed stainless steel or titanium foil layers.

* Information listed above is at the time of submission. *

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