About some computation particularities of multicell polygonal cross-section bars

Vasile Murarasu

Abstract


A set of particularization of the thin-wall bars with polygonal multicell section theory is developed. The hypothesis of the indeformability of the section outline is assumed. There are derived the relations expressing the geometric characteristic functions B∗ I -the moment of inertia at free torsion and ω ∗ I - the generalized sectorial moment of inertia.


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References


MuraraÅŸu, V., Some Considerations About the Influence of the Section Warping in the Behaviour of the Thin-Wall Box Members, Buletinul IPI Tomul XLV(IL), 3-4, s. Constr., Archit. (1999).

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MuraraÅŸu V., Stress and Strains in Thin-Wall Bars, with Undeformable Boundary Using THE Finite Element Method. 5th Internat. Conf. on Boundary and Finite Element, Univ. of Oradea,

May 2000, Section 2.2, 15-21.

Precupanu D., Muraraşu V., Consideration Concerning the Calculus for Warping of the Unsymmetrical Bicell Thin-Wall Cross Section Bars, 6th Internat. Coll. on Stability and Ductility of Steel Structures, “Politehnica†Univ., Timişoara, Sept. 9-11, 1999.


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