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Damage Process of Composite Material with Randomly Oriented Fibers

by Z. Maekawa, Kyoto Inst of Technology, Japan,
H. Hamada, Kyoto Inst of Technology, Japan,
A. Yokoyama, Kyoto Inst of Technology, Japan,



Document Type: Proceeding Paper

Part of: Structural Safety and Reliability

Abstract:

A numerical procedure is formulated to make clear the damage process of composite materials with randomly oriented fibers. These composites often have complicated fiber oriented states, since the complicated flow of fibers occurs during molding process. First, the authors propose a new method which indicates complex fiber orientation distribution by use of incomplete beta function. Various fiber oriented states can be represented by changing values of two parameters of this distribution function. Next, a numerical procedure is presented to estimate the strength of composite with complicated fiber oriented state. This procedure can be formulated by considering the progressive damage process which consists of fracture modes depended on fiber orientation.

Subject Headings: Composite materials | Fibers | Materials processing | Material properties | Fiber reinforced composites | Damage (material) | Numerical methods

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