Spring stiffnesses of composite circular springs with extended flat contact surfaces under unidirectional line-loading and surface loading configurations

Stephen R Reid, W. H. Wong, K. J. Lau, P. C. Tse

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Theoretical expressions based on the principle of minimum potential energy are presented which describe the stiffnesses of mid-surface symmetric, woven composite circular springs with extended flat contact surfaces subject to unidirectional line and surface-loading configurations. Three-dimensional finite element analysis has been employed to study the transverse shearing effects. Eighteen woven fibre/epoxy composite circular springs with extended flat contact surfaces in different radii and thicknesses were fabricated and tested. Comparison studies of the results obtained from both the analytical and numerical models are made with experimental data, and the results are found to be satisfactory. The semi-included angle of the flat contact surface is vital parameter to spring stiffnesses of the composite spring. (C) 2002 Published by Elsevier Science Ltd.

Original languageEnglish
Pages (from-to)367-386
Number of pages19
JournalComposites Part B: Engineering
Volume55
Issue number4
DOIs
Publication statusPublished - 2002

Keywords

  • composite springs
  • stiffnesses
  • loading configuration

Cite this

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title = "Spring stiffnesses of composite circular springs with extended flat contact surfaces under unidirectional line-loading and surface loading configurations",
abstract = "Theoretical expressions based on the principle of minimum potential energy are presented which describe the stiffnesses of mid-surface symmetric, woven composite circular springs with extended flat contact surfaces subject to unidirectional line and surface-loading configurations. Three-dimensional finite element analysis has been employed to study the transverse shearing effects. Eighteen woven fibre/epoxy composite circular springs with extended flat contact surfaces in different radii and thicknesses were fabricated and tested. Comparison studies of the results obtained from both the analytical and numerical models are made with experimental data, and the results are found to be satisfactory. The semi-included angle of the flat contact surface is vital parameter to spring stiffnesses of the composite spring. (C) 2002 Published by Elsevier Science Ltd.",
keywords = "composite springs, stiffnesses, loading configuration",
author = "Reid, {Stephen R} and Wong, {W. H.} and Lau, {K. J.} and Tse, {P. C.}",
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journal = "Composites Part B: Engineering",
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TY - JOUR

T1 - Spring stiffnesses of composite circular springs with extended flat contact surfaces under unidirectional line-loading and surface loading configurations

AU - Reid, Stephen R

AU - Wong, W. H.

AU - Lau, K. J.

AU - Tse, P. C.

PY - 2002

Y1 - 2002

N2 - Theoretical expressions based on the principle of minimum potential energy are presented which describe the stiffnesses of mid-surface symmetric, woven composite circular springs with extended flat contact surfaces subject to unidirectional line and surface-loading configurations. Three-dimensional finite element analysis has been employed to study the transverse shearing effects. Eighteen woven fibre/epoxy composite circular springs with extended flat contact surfaces in different radii and thicknesses were fabricated and tested. Comparison studies of the results obtained from both the analytical and numerical models are made with experimental data, and the results are found to be satisfactory. The semi-included angle of the flat contact surface is vital parameter to spring stiffnesses of the composite spring. (C) 2002 Published by Elsevier Science Ltd.

AB - Theoretical expressions based on the principle of minimum potential energy are presented which describe the stiffnesses of mid-surface symmetric, woven composite circular springs with extended flat contact surfaces subject to unidirectional line and surface-loading configurations. Three-dimensional finite element analysis has been employed to study the transverse shearing effects. Eighteen woven fibre/epoxy composite circular springs with extended flat contact surfaces in different radii and thicknesses were fabricated and tested. Comparison studies of the results obtained from both the analytical and numerical models are made with experimental data, and the results are found to be satisfactory. The semi-included angle of the flat contact surface is vital parameter to spring stiffnesses of the composite spring. (C) 2002 Published by Elsevier Science Ltd.

KW - composite springs

KW - stiffnesses

KW - loading configuration

U2 - 10.1016/S0263-8223(01)00168-4

DO - 10.1016/S0263-8223(01)00168-4

M3 - Article

VL - 55

SP - 367

EP - 386

JO - Composites Part B: Engineering

JF - Composites Part B: Engineering

SN - 1359-8368

IS - 4

ER -