Accession Number : AD0269422

Title :   DEFLECTIONS AND STRESSES OF HEATED TRUSS TYPE STRUCTURES BY A DIRECT STIFFNESS METHOD

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : MEYETTE,RONALD JOSEPH

Report Date : AUG 1961

Pagination or Media Count : 1

Abstract : The testing and stress analysis of pin-jointed truss type structures subjected to aerodynamic heating and loading are considered. Force-de lection relationships and corresponding member stresses were found by use of a direct stiffness method. Geometrical non-linearities and the varition with temperature of the modulus of elastic and the coefficient of linear epansion were accounted for. Solutions obtained on a digital computer show little effect of geometric non-linearities on displacements. There is a more pronounced effect on member stresses but this was also small for the trusses examined. This method is a valuable tool for stress analysis and the force-deflection relationships obtained may be used to indicate incipient failure of a structure during testing. (Author)

Descriptors :   *AIRFRAMES, AERODYNAMIC HEATING, DEFLECTION, DEFORMATION, LOAD DISTRIBUTION, MATHEMATICAL ANALYSIS, MATHEMATICAL PREDICTION, STRESSES, STRUCTURES, TEST METHODS

Distribution Statement : APPROVED FOR PUBLIC RELEASE