SCALING OF LARGE SPACE STRUCTURE JOINTS

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$49,949.00
Award Year:
1987
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
5703
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Csa Engineering Inc
560 San Antonio Rd - Ste 101, Palo Alto, CA, 94306
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
DAVID A KIENHOLZ
(415) 494-7351
Business Contact:
() -
Research Institution:
n/a
Abstract
A PROGRAM IS PROPOSED TO INVESTIGATE METHODS FOR PRODUCING SUBSCALE TRUSS JOINTS WITH STIFFNESS AND DAMPING PROPERTIES SUCH THAT THEY MAINTAIN DYNAMIC SIMILITUDE WITH THEIR FULL-SCALE COUNTERPARTS. THAT IS, THE LOSS FACTORS OF THE MODEL AND PROTOTYPE ARE EQUAL AND THEIR LINEAR STIFFNESS ARE IN THE RATIO R(E)R(L). R(E) AND R(L) ARE RESPECTIVELY THE MODEL-TO-PROTOTYPE RATIOS OF MATERIAL ELASTIC MODULI AND LENGTHS. A DEMONSTRATION EXERCISE WILL BE ATTEMPTED TO SHOW THAT SIMILITUDE CAN BE ACHIEVED FOR A SELECTED JOINT DESIGN BY MEANS WHICH ARE CHEAPER AND MORE PRACTICAL THAN EXACT GEOMETRIC PROPORTIONALITY. STRUCTURAL OPTIMIZATION METHODS AND SOFTWARE WILL BE USED TO DESIGN A SUBSCALE JOINT THAT HAS SPECIFIED PROPERTIES, BUT IS SIMPLER AND CHEAPER IN CONSTRUCTION THAN A MINIATURE REPLICA. STIFFNESS AND LOSS FACTOR WILL BE MEASURED FOR THE FULL-SCALE PROTOTYPE AND SUBSCALE MODEL.

* information listed above is at the time of submission.

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