Review of Composite Analysis Methods for High Temperature Applications

by J. G. Crose, PDA Engineering Inc, United States,

Document Type: Proceeding Paper

Part of: Structural Materials


This paper addresses a number of unique problems encountered in the stress analysis of high temperature composite materials. The materials used as structures subjected to temperatures as high as 6000°F are very unique in their behavior. Both thermodynamically stable and unstable materials are used. The stable materials are usually a form of graphite. Since the graphite crystal is highly anisotropic in stiffness, strength and expansion, a wide range of composite properties can result and most of these materials are severely micro-cracked in the room temperature condition. The unstable materials undergo decomposition when subjected to elevated temperatures which dramatically affects their thermomechanical behavior.

Subject Headings: Composite materials | Thermal analysis | Temperature effects | Finite element method | Strength of materials | Stress strain relations | Three-dimensional analysis | Thermal loads

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