Accession Number:

AD0269422

Title:

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

Descriptive Note:

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1961-08-01

Pagination or Media Count:

1.0

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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE