Finite-element and simplified models of GFRP connections

S. J. Smith, I. D. Parsons, Keith Hjelmstad

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Finite-element models of a variety of joints between glass fiber reinforced plastic (GFRP) pultruded members are described that reproduce experimentally measured linear elastic stiffnesses to within 10%. The models were constructed using shell finite elements. The material properties of the pultrusions were measured using a combination of tests and fits to numerical models. This approach produced elastic constants that proved reliable in the subsequent finite-element modeling of the joints. Standard data provided by the manufacturer gave inaccurate predictions of the joint stiffnesses. Two types of simplified models were also considered: (1) simplified beam models; and (2) a condensed finite-element model. The simplified beam models replace the joint with an elastic connection region and a torsional spring. The condensed finite-element models use a detailed shell element model of the joint to extract the equivalent stiffnesses of the joint that can be used with a standard frame analysis package. When compared with experimental data, the simplified beam models performed poorly. However, the condensed finite-element models performed almost as well as the detailed finite models.

Original languageEnglish (US)
Pages (from-to)749-756
Number of pages8
JournalJournal of Structural Engineering
Volume125
Issue number7
StatePublished - Jul 1999
Externally publishedYes

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Glass fiber reinforced plastics
Stiffness
Pultrusion
Elastic constants
Numerical models
Materials properties

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

Cite this

Finite-element and simplified models of GFRP connections. / Smith, S. J.; Parsons, I. D.; Hjelmstad, Keith.

In: Journal of Structural Engineering, Vol. 125, No. 7, 07.1999, p. 749-756.

Research output: Contribution to journalArticle

Smith, S. J. ; Parsons, I. D. ; Hjelmstad, Keith. / Finite-element and simplified models of GFRP connections. In: Journal of Structural Engineering. 1999 ; Vol. 125, No. 7. pp. 749-756.
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