Thermal stresses due to property gradients at the fiber/matrix interface

N. R. Sottos, R. L. McCullough, S. I. Guceri

Research output: Contribution to journalConference article

Abstract

The micro-thermal stresses due to material property gradients at the fiber/matrix interface are predicted for a hexagonal array of fibers. A linear relationship is chosen to simulate the variation of both elastic modulus and coefficient of thermal expansion in an interphase region around the fibers. To solve the resulting governing field equations, a computational approach using the Boundary Fitted Coordinates Techniques(BFCS) is adopted. A parametric study is performed to assess the effects of interfacial properties and fiber spacing on the local thermal stress state. Results are presented for several typical composite systems. It is shown that modifying the mechanical properties in an interfacial zone around the fibers, as well as changing the fiber volume fraction can have a significant effect on the local thermal stress state.

Original languageEnglish (US)
Pages (from-to)11-20
Number of pages10
JournalAmerican Society of Mechanical Engineers, Applied Mechanics Division, AMD
Volume100
StatePublished - Dec 1 1989
Externally publishedYes
EventMechanics of Composite Materials and Structures - La Jolla, CA, USA
Duration: Jul 9 1989Jul 12 1989

ASJC Scopus subject areas

  • Mechanical Engineering

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