Elastic-plastic behavior of woven-steel-fiber-reinforced thermoplastic laminated plates under in-plane loading

KARAKUZU R., Atas C., Akbulut H.

COMPOSITES SCIENCE AND TECHNOLOGY, vol.61, no.10, pp.1475-1483, 2001 (SCI-Expanded, Scopus) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 61 Issue: 10
  • Publication Date: 2001
  • Doi Number: 10.1016/s0266-3538(01)00042-2
  • Journal Name: COMPOSITES SCIENCE AND TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1475-1483
  • Keywords: thermoplastic, elastic-plastic, laminates, residual stress, finite-element analysis
  • Dokuz Eylül University Affiliated: Yes

Abstract

This paper deals with elastic-plastic stress analysis of thermoplastic laminated composite plates reinforced with woven steel fibers and containing circular holes under in-plane static loading. Residual stresses and propagation of plastic zones are obtained in simply supported symmetric and antisymmetric laminated composite plates by using a nine-node Lagrangian finite-element method. First-order shear deformation theory was used as an equivalent single-layer laminate theory for small deformations so that large plastic strains are not allowed to occur, A modified Newton-Raphson method is used as an iterative technique for determining the non-linear behavior of the material after yielding. After yielding the load is increased by means of many load steps, 0.01 MPa at each step, to follow the stress/strain curve more accurately. Mechanical properties of a layer were obtained experimentally. (C) 2001 Published by Elsevier Science Ltd. All rights reserved.