Elastic equilibrium of two-phase random composite beams under torsion, with simply and multiply connected cross-sections, is investigated. The analysis is carried out in order to assess the boundary layer effect exhibited by the shear stress field, expressed in terms of the torsional warping function, near the cross-section boundary. The boundary value problem governing the warping function is formulated in variational terms and solved by a FEM analysis. Standard methods of micromechanics are adopted in order to evaluate the eigenstress fields describing cross-sectional elastic inhomogeneities. The shear stress distribution in a beam with equilateral triangular cross-section is numerically evaluated for different microstructures characterizing the elastic phases of the composite material.

On torsion of random composite beams / Barretta, Raffaele; Luciano, Raimondo; Willis, John R.. - In: COMPOSITE STRUCTURES. - ISSN 0263-8223. - 132:(2015), pp. 915-922. [10.1016/j.compstruct.2015.06.069]

On torsion of random composite beams

BARRETTA, RAFFAELE;
2015

Abstract

Elastic equilibrium of two-phase random composite beams under torsion, with simply and multiply connected cross-sections, is investigated. The analysis is carried out in order to assess the boundary layer effect exhibited by the shear stress field, expressed in terms of the torsional warping function, near the cross-section boundary. The boundary value problem governing the warping function is formulated in variational terms and solved by a FEM analysis. Standard methods of micromechanics are adopted in order to evaluate the eigenstress fields describing cross-sectional elastic inhomogeneities. The shear stress distribution in a beam with equilateral triangular cross-section is numerically evaluated for different microstructures characterizing the elastic phases of the composite material.
2015
On torsion of random composite beams / Barretta, Raffaele; Luciano, Raimondo; Willis, John R.. - In: COMPOSITE STRUCTURES. - ISSN 0263-8223. - 132:(2015), pp. 915-922. [10.1016/j.compstruct.2015.06.069]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/613427
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