FEASIBILITY STUDY OF SCALE SURFACE SHIP MODELS FOR UNDEX

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$50,000.00
Award Year:
1991
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
15493
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Nkf Engineering Inc
4200 Wilson Boulvard, Arlington, VA, 20362
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr Michael P Pakstys
Principal Investigator
(703) 358-8600
Business Contact:
() -
Research Institution:
n/a
Abstract
THE OBJECTIVE OF THE PROPOSED ENGINEERING DEVELOPMENT IS TO INVESTIGATE AND DEVELOP METHODOLOGY FOR THE EXPLOITATION OF STRUCTURAL SCALED MODEL TEST DATA FOR THE ENHANCED SURVIVABILITY AND REDUCE COST OFSURFACE SHIP PRODUCTION. THIS ENGINEERING DEVELOPMENT WILL FOCUS ONTHE IDENT CATLON OF APPROPRIATE MODEL CHARACTERISTICS REQUIRED FOR THE ACCURATE PREDICTION O URFACE SHIP STRUCTURE AND EQUIPMENT RESPONSETO UNDEX LOADING UTILIZING SCALE ODEL DATA TO MINIMIZE FULL-SCALE TESTING. TO ACHIEVE THE GOALS MENTIONED ABOVE, COMBINATION OF ANALYSISAND STRUCTURAL SCALE MODEL WOULD BE UTILIZED. THE ANALYTICAL PART WOULD INCLUDE A PROVEN COMPUTATIONAL APPROACH USING VERIFIED COMPUTER CODES APABLE OF MODELING SURFACE SHIPS SUBJECTED TO UNDEX LOADING. METHODOLOGIES TO ADDRESS CAVITATLON PHENOMENA, GRAVITATIONAL EFFECTS, GEOMETRIC AND MATERIAL NONLINEARI IES, OCEAN BOTTOM AND SURFACE EFFECTS AND BUBBLE PULSATION ARE DISCUSSED AND INTEGRATED INTO A COMPREHENSIVE APPROACH. THE EFFECTS WHICH DO NOT SCALE, SUCH A GRAVITATIONAL EFFECTS, ENERGY DISSIPATION AND SURFACE TENSION WOULD BE ACCOUNTED FOR IN OUR APPROACH BY USING SUPPORTIVE EXPERIMENTAL AND ANALYTICAL DATA. ILLUSTRATIVE DATA DEMONSTRATING LIMITATIONS OF SIMILITUDE MODELS ARE REFEREOCED AND VALIDATING MODEL APPROACHES TO ADDRESS THESE SCENARIOS ARE PRESENTED. THE USE OF THE SCALE MODEL TEST DATA COMBINED WITH THE ANALYSIS TECHNIQUES/AUTOMATED SCALING PROCEDURES DURING THE SHIP DESIGN PHASES ARE DISCUSSED AND THEIR ADVANTAGES ARE DEMONSTRATED.

* information listed above is at the time of submission.

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