WIT Press

Modeling Residual Stresses And Damage Initiation In Discontinuous Random Fiber SRIM Composites

Price

Free (open access)

Paper DOI

10.2495/CP960131

Volume

10

Pages

10

Published

1996

Size

860 kb

Author(s)

Thomas Eason & Ozden Ochoa

Abstract

The performance of SRIM (Structural Reaction Injection Molding) composites constructed from a thermal spray preform is analytically assessed. A finite element model has been developed with a nonlinear constitutive response to understand fiber/fiber and fiber/matrix behavior under thermomechanical loads. A one dimensional transient heat transfer problem is solved and used to simulate the thermal gradient of the part during processing. The solution from the heat transfer problem is used in the finite element model where cooled down from processing to room temperature provides the loading. Initial results indicate that residual stresses in the matrix are of a substantial tensile magnitude and produce damage in localized areas. Introduction As more economical manufa

Keywords