Bistable hybrid symmetric laminates

H Li, F. Dai*, P. M. Weaver, S. Du

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

36 Citations (Scopus)

Abstract

Bistable laminates with unsymmetric lay-ups have been studied extensively. In this work a novel type of bistable hybrid laminate with symmetric lay-up is presented. The two stable configurations of the bistable hybrid symmetric laminate are doubly-curved. The two stable configurations have identical curvatures with opposite signs. The bistability of hybrid symmetric laminates derives from the thermal strain mismatch between the metal ply and the 00 composite ply. Finite element analyses (FEA) are performed using ABAQUS and results are compared with a new analytical model which employs piecewise continuous displacement functions. Two bistable hybrid symmetric laminates are manufactured and the stable configurations are measured in experiments. Both FEA and analytical results match experimental results reasonably well. In addition, the influences of various laminates' lay-ups, dimensions and material properties are investigated to gain a thorough understanding of the bistable characteristics of bistable hybrid symmetric laminates (BHSLs). (C) 2014 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)782-792
Number of pages11
JournalComposite Structures
Volume116
Issue number1
DOIs
Publication statusPublished - 1 Jan 2014

Keywords

  • Bistable
  • Composite laminate
  • Hybrid
  • Symmetric
  • ROOM-TEMPERATURE SHAPES
  • COMPOSITE PLATES
  • CURVATURE
  • SHELLS

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