Finite element modeling of open-section composite beams with warping restraint effects

Matthew W. Floros, Edward Smith

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

A new finite element is developed to capture spanwise torsion-related warping restraint effects in open section composite beams. The new model allows for direct implementation of the kinematic boundary conditions for torsion. A Vlasov cross-section model is used to determine the beam stiffness coefficients. The new model is validated against closed form solutions for composite I-beams and detailed shell element solutions. Previous methods of modeling spanwise warping effects are reviewed and improvements in accuracy are presented. Beams with spanwise taper, elastic couplings, arbitrary warping boundary conditions, bending, and distributed torsional loadings are analyzed. For beams with uniform crosssection, the global increase in torsional stiffness is independent of distributed loadings. Warping restraint effects were found to be dependent on the crosssectional geometry in the vicinity of the restraint. For extremely slender beams, the new torsion model reduces to classic St. Venant torsioa.

Original languageEnglish (US)
Pages1420-1430
Number of pages11
DOIs
StatePublished - Jan 1 1996
Event37th AIAA/ASME/ASCE/AHS/ASC Structure, Structural Dynamics and Materials Conference, 1996 - Salt Lake City, United States
Duration: Apr 15 1996Apr 17 1996

Other

Other37th AIAA/ASME/ASCE/AHS/ASC Structure, Structural Dynamics and Materials Conference, 1996
CountryUnited States
CitySalt Lake City
Period4/15/964/17/96

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Torsional stress
Composite materials
Stiffness
Boundary conditions
Kinematics
Geometry

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Mechanics of Materials
  • Architecture
  • Building and Construction

Cite this

Floros, M. W., & Smith, E. (1996). Finite element modeling of open-section composite beams with warping restraint effects. 1420-1430. Paper presented at 37th AIAA/ASME/ASCE/AHS/ASC Structure, Structural Dynamics and Materials Conference, 1996, Salt Lake City, United States. https://doi.org/10.2514/6.1996-1472
Floros, Matthew W. ; Smith, Edward. / Finite element modeling of open-section composite beams with warping restraint effects. Paper presented at 37th AIAA/ASME/ASCE/AHS/ASC Structure, Structural Dynamics and Materials Conference, 1996, Salt Lake City, United States.11 p.
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Floros, MW & Smith, E 1996, 'Finite element modeling of open-section composite beams with warping restraint effects' Paper presented at 37th AIAA/ASME/ASCE/AHS/ASC Structure, Structural Dynamics and Materials Conference, 1996, Salt Lake City, United States, 4/15/96 - 4/17/96, pp. 1420-1430. https://doi.org/10.2514/6.1996-1472

Finite element modeling of open-section composite beams with warping restraint effects. / Floros, Matthew W.; Smith, Edward.

1996. 1420-1430 Paper presented at 37th AIAA/ASME/ASCE/AHS/ASC Structure, Structural Dynamics and Materials Conference, 1996, Salt Lake City, United States.

Research output: Contribution to conferencePaper

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Floros MW, Smith E. Finite element modeling of open-section composite beams with warping restraint effects. 1996. Paper presented at 37th AIAA/ASME/ASCE/AHS/ASC Structure, Structural Dynamics and Materials Conference, 1996, Salt Lake City, United States. https://doi.org/10.2514/6.1996-1472