Finite element study of plate buckling induced by spatial temperature gradients
Finite element analyses of thermal buckling of thin metallic plates with prescribed spatial temperature distributions are described. Thermally induced compressive membrane stresses and transverse plate displacement imperfections initiate plates buckling. A finite element formulation based on von Karman plate theory is presented. The resulting nonlinear equations are solved for incremental temperature increases by Newton-Raphson iteration. The computational method is used to investigate the buckling response of rectangular plates with steady and unsteady spatially varying temperature distributions. The role of initial plate imperfections and temperature distributions on the nonlinear response of plate displacements and stresses is described. The relatively high levels of stress induced by spatial temperature gradients should be considered carefully in the postbuckling design of panels for aerospace vehicles subjected to combined mechanical and thermal loads. 31 refs.
- OSTI ID:
- 6051430
- Report Number(s):
- AIAA-Paper-93-1572; CONF-9304186-
- Resource Relation:
- Conference: 34. American Institute of Aeronautics and Astronautics/American Society of Mechanical Engineers (AIAA/ASME) adaptive structures conference, La Jolla, CA (United States), 19-22 Apr 1993; Other Information: 2313-2326
- Country of Publication:
- United States
- Language:
- English
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