A Reliability Analysis of Aerospace Structures Subject to Thermal Mechanical and Flight Loads

by M. E. Artley, Villanova Univ, United States,
K. C. Chou, Villanova Univ, United States,

Abstract: Aerospace structures are subjected to various flight loads throughout their service life. In certain anticipated missions, significant thermal stresses will be generated through atmospheric exit and re-entry. It is the purpose of this study to develop a method to assess the reliability of the structural components of these aircraft. Due to the loss of strength of the aerospace materials under high temperature, the structural response of some flight maneuvers may be nonlinear. Thus it becomes necessary to include the analysis of a non-linear structural response process. In this study, a preliminary selection of stochastic models for the thermal and flight loads is noted. Nonlinear load exceedance processes will then be modified to analyze the load model developed and a reliability analysis will be conducted.

Subject Headings: Load factors | Thermal loads | Structural reliability | Flight | Thermal analysis | Vehicle loads | Model analysis

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