A binary model of textile composites; 1: Formulation

Journal Article · Sat Oct 01 00:00:00 EDT 1994 · Acta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-7151(94)90479-0· OSTI ID:6887340

Cox, B N; Carter, W C ^[1]; Fleck, N A ^[2]

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1. Rockwell International Science Center, Thousand Oaks, CA (United States)
2. Cambridge Univ. (United Kingdom). Engineering Dept.

This paper presents a finite element model of polymer composites with three-dimensional (3D) reinforcement. The model performs Monte Carlo simulations of failure under monotonic and fatigue loading. The formulation of the model is guided by extensive prior experimental observations of 3D woven composites. Special emphasis is placed on realistic representation of the pattern of reinforcing tows, random irregularity in two positioning, randomness of the strengths of constituent elements, and the mechanics of stress redistribution around sites of local failure. The constitutive properties of model elements (or their distributions) are based on micromechanical models of observed failure events. Material properties that are appropriate analyzed by the model are contrasted with those amenable to much simpler models. Some illustrative model simulations are presented. Prescriptions for the calibration of the model for design and reliability applications and details of its performance in simulating the elastic and damaged regimes of 3D woven composites will appear in subsequent papers.

• OSTI ID: 6887340
• Journal Information: Acta Metallurgica et Materialia; (United States), Vol. 42:10; ISSN 0956-7151
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
FAILURES
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
NOTCHES
THEORETICAL DATA
DATA
INFORMATION
MATERIALS
NUMERICAL DATA
360603* - Materials- Properties