Accession Number : ADA192302

Title :   FEB Structural Analysis. Revision H,

Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK COMMUNICATIONS AND SPACE SCIENCES LAB

Personal Author(s) : Croskey, Charles L

PDF Url : ADA192302

Report Date : 10 Feb 1988

Pagination or Media Count : 89

Abstract : The purpose of this analysis is to document the expected simple loads on the cold plate through the tie down blots around the perimeter of the FEB. Finite element analysis has been performed to determine the specific vibration modes and natural frequencies. The simple static analysis is also repeated when one bolt is missing. Flange analysis of the baseplate is performed as well as analysis of the attachment and cross bracing of the internal modules. The underlying coldplate is assumed soft in that the net moments are assumed centered around the center of gravity of the FEB and the coldplate does not force any specific moment axis. Since all perimeter bolts on the 700 mm x 420 mm grid are used, 32 tie down bolts are used. For the analysis of the distribution of quasi-static loads on the tie down bolts, the FEB bottom plate will be assumed to be perfectly rigid around its perimeter. The thick-walled outer cover attaches to the FEB with the same bolt pattern, which contributes to the rigidity of the outer perimeter of the base plate.

Descriptors :   *BAYS(STRUCTURAL UNITS), *STRUCTURAL ANALYSIS, *BOLTED JOINTS, BOLTS, DISTRIBUTION, EXTERNAL, FINITE ELEMENT ANALYSIS, FLANGES, GRAVITY, MOMENTS, PATTERNS, RESONANT FREQUENCY, STATIC LOADS, STATIC TESTS, THICK WALLS, VIBRATION, PLATES, NOTCH TOUGHNESS, ALUMINUM ALLOYS, THERMAL EXPANSION, THERMAL STRESSES, HOLES(OPENINGS)

Subject Categories : Structural Engineering and Building Technology
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE