Stiffening and Mechanical Load Effects on Thermal Buckling of Stiffened Cylindrical Shells

摘要

Astudy of combined thermal andmechanical buckling of stiffened cylindrical shells using the structural geometrynof a preliminary supersonic transport fuselage design from 1970 is presented. The buckling analysis is performednusing BOSOR4, a nonlinear axisymmetric shell-of-revolution analysis code. The mechanical load is from axialncompression and internal pressure and the thermal loading is fromheated skins. Results indicate that the location ofnlongitudinal eccentric stiffening has a significant effect on the thermal and axial buckling strength of longitudinallynstiffened shells with and without ring frames. Buckling-interaction curves of the results with the associated modenshapes and a surface plot of the results are presented in which the eccentricity of the stringer, axial load, andntemperature load are varied.