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Thin FRP composite panels under high transverse pressure

Thin FRP composite panels under high transverse pressure
Thin FRP composite panels under high transverse pressure

There is increasing interest in the use of fibre-reinforced plastic (FRP) composite materials for large plated structural applications in ship and civil construction sectors. Under high transverse pressure, the thin composite panels undergo large deflections and develop various kinds of damage. To understand the progressive failure behaviour of the panel experimental investigations and theoretical analyses have been carried out in this research.

On the experimental side, a new square panel has been tested in more detail, taking advantage of experience gained in the earlier tests. A number of coupons at various angles to the warp direction were also tested to obtain stress-strain diagrams, stiffnesses and strengths of the composite.

On the theoretical side, to predict the mechanical properties of composite material, a simple theoretical model was presented in this research. To understand the effect of undulation and interlacing of woven rovings on the stress distribution inside the woven composite, the complicated architecture of the composite was modelled using finite element method. The study is very helpful in identifying failure initiation and understanding failure mechanism of the woven composite.

To model progressive failure and damage accumulation of the woven composite panels, a methodology for progressive failure analysis of woven composite panels was developed. The analyses were conducted in ABAQUS finite element package on the IBM SP2 parallel processing computer. The results from the progressive failure analysis provided a good explanation of the actual panel behaviour.

For quick prediction of the panel behaviour a simplified finite element analysis was presented. Two extreme cases were studied in the analysis. One is called Resin Effective, another is called Resin Ineffective. The two extreme cases are expected to provide bounds to the behaviour of the panel.

University of Southampton
Feng, Zheng-Nong
b7023c24-59c8-4d32-aced-e65bddd53471
Feng, Zheng-Nong
b7023c24-59c8-4d32-aced-e65bddd53471

Feng, Zheng-Nong (1998) Thin FRP composite panels under high transverse pressure. University of Southampton, Doctoral Thesis.

Record type: Thesis (Doctoral)

Abstract

There is increasing interest in the use of fibre-reinforced plastic (FRP) composite materials for large plated structural applications in ship and civil construction sectors. Under high transverse pressure, the thin composite panels undergo large deflections and develop various kinds of damage. To understand the progressive failure behaviour of the panel experimental investigations and theoretical analyses have been carried out in this research.

On the experimental side, a new square panel has been tested in more detail, taking advantage of experience gained in the earlier tests. A number of coupons at various angles to the warp direction were also tested to obtain stress-strain diagrams, stiffnesses and strengths of the composite.

On the theoretical side, to predict the mechanical properties of composite material, a simple theoretical model was presented in this research. To understand the effect of undulation and interlacing of woven rovings on the stress distribution inside the woven composite, the complicated architecture of the composite was modelled using finite element method. The study is very helpful in identifying failure initiation and understanding failure mechanism of the woven composite.

To model progressive failure and damage accumulation of the woven composite panels, a methodology for progressive failure analysis of woven composite panels was developed. The analyses were conducted in ABAQUS finite element package on the IBM SP2 parallel processing computer. The results from the progressive failure analysis provided a good explanation of the actual panel behaviour.

For quick prediction of the panel behaviour a simplified finite element analysis was presented. Two extreme cases were studied in the analysis. One is called Resin Effective, another is called Resin Ineffective. The two extreme cases are expected to provide bounds to the behaviour of the panel.

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Published date: 1998

Identifiers

Local EPrints ID: 463297
URI: http://eprints.soton.ac.uk/id/eprint/463297
PURE UUID: ac37980a-691b-4711-a04f-502760bc0695

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Date deposited: 04 Jul 2022 20:48
Last modified: 16 Mar 2024 19:03

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Author: Zheng-Nong Feng

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