New composite beam theory including torsional-warping shear deformations

L. Kollar, A. Pluzsik

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Composite beams and columns are analyzed and designed either with explicit beam expressions or with numerical (e.g. FE) methods, both require the knowledge of the cross sectional properties, i.e. the bending-, the shear-, the torsional-, warping-, axial stiffnesses and the coupling terms. These properties are calculated either by using kinematical relationships (e.g. cross sections remain-plane after the deformation of the beam) or by asymptotic methods, however in both cases the accuracy depends on the assumed degree of freedom of the model. These assumptions may lead to inaccurate or contradictory results. In this paper a new theory is presented in which no kinematical assumption is applied, rather the properties are derived from the accurate (three dimensional) equations of beams using limit transition. The theory includes both the in-plane and the torsional-warping shear deformations. As a result of the analysis the stiffness matrix of the beam is obtained which is needed for either analytical or numerical (FE) solutions.

Original languageEnglish
Title of host publicationECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials
PublisherEuropean Conference on Composite Materials, ECCM
ISBN (Print)9788888785332
Publication statusPublished - 2012
Event15th European Conference on Composite Materials: Composites at Venice, ECCM 2012 - Venice, Italy
Duration: Jun 24 2012Jun 28 2012

Other

Other15th European Conference on Composite Materials: Composites at Venice, ECCM 2012
CountryItaly
CityVenice
Period6/24/126/28/12

Fingerprint

Stiffness matrix
Shear deformation
Stiffness
Composite materials

Keywords

  • Beam theory
  • Composite
  • Stiffness matrix
  • Torsion

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Kollar, L., & Pluzsik, A. (2012). New composite beam theory including torsional-warping shear deformations. In ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials European Conference on Composite Materials, ECCM.

New composite beam theory including torsional-warping shear deformations. / Kollar, L.; Pluzsik, A.

ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials. European Conference on Composite Materials, ECCM, 2012.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kollar, L & Pluzsik, A 2012, New composite beam theory including torsional-warping shear deformations. in ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials. European Conference on Composite Materials, ECCM, 15th European Conference on Composite Materials: Composites at Venice, ECCM 2012, Venice, Italy, 6/24/12.
Kollar L, Pluzsik A. New composite beam theory including torsional-warping shear deformations. In ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials. European Conference on Composite Materials, ECCM. 2012
Kollar, L. ; Pluzsik, A. / New composite beam theory including torsional-warping shear deformations. ECCM 2012 - Composites at Venice, Proceedings of the 15th European Conference on Composite Materials. European Conference on Composite Materials, ECCM, 2012.
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