PREDICTION OF FLUTTER IN PANELS MADE FROM ADVANCED COMPOSITEMATERIALS

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$270,799.00
Award Year:
1991
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
9438
Agency Tracking Number:
9438
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
3400 Investment Blvd, Hayward, CA, 94545
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Rocky Richard Arnold
(415) 887-8811
Business Contact:
() -
Research Institute:
n/a
Abstract
THE OBJECTIVE OF THIS PHASE I RESEARCH IS TO DEVELOP A COMPUTATIONAL PROCEDURE FOR PREDICTING THE LIFE AND RELIABILITY OF COMPOSITE STRUCTURAL PANELS SUBJECTED TO COMPLEX DYNAMIC LOADS FROM ACOUSTIC, AERODYNAMIC, AND THERMAL ENVIRONMENTS. THE PROPOSED RESEARCH USES A NONCLASSICAL VARIATIONAL APPROACH AND A TIME DOMAIN MONTE CARLO METHOD TO DEVELOP ANALYTICAL EQUATIONS OF HIGH ACCURACY AND EFFICIENCY. THE STRUCTURAL MECHANICAL MODEL WILL INCLUDE MODELING FOR TRANSVERSE SHEAR EFFECTS. THE TIME DOMAIN MONTE CARLO METHOD WILL PERMIT AN EXAMINATION OF THE EFFECTS OF PEAK STRESSES AND EXCEEDANCES; SUBSEQUENTLY, MEANINGFUL PREDICTIONS OF STRUCTURAL LIFE (FATIGUE) CAN BE MADE. PHASE I RESEARCH WILL BE USED TO VERIFY THE SYNERGISTIC COMBINING OF THE NONCLASSICAL VARIATIONAL METHODS WITH THE MONTE CARLO TIME DOMAIN ANALYSIS. THE RESULTING COMPUTATIONAL PROCEDURE WILL BE USED TO ESTABLISH THE FEASIBILITY OF THE DEVELOPING EITHER A DISCRETIZED (FINITE ELEMENT) OR NUMERICAL COMPUTER PROGRAM TO BE COMPLETED DURING ANY PHASE II EFFORT. THIS RESEARCH WILL LEAD TO A NEW TECHNOLOGY BASE FOR ESTIMATING THE NONLINEAR RESPONSE CHARACTERISTICS OF A NEW GENERATION OF AIRCRAFT EXPOSED TO SEVERE ACOUSTIC, AERODYNAMIC, AND THERMAL ENVIRONMENTS.

* information listed above is at the time of submission.

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