1998Journal of Structural EngineeringRequires access

EFFECTIVE TORSIONAL CONSTANT FOR RESTRAINED OPEN SECTION. TECHNICAL NOTE

Maged Elhelbawey, Chuanhong Fu

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Abstract

A simple, easy-to-apply effective torsional constant for the rotational stiffness of a restrained open section was developed. This effective torsional constant takes both the pure torsion and the warping torsion into account. The final result is a simple formula for a modified torsional constant, which is in terms of unbraced length and can be easily calculated. The constant then can be used for any generic finite-element structural analysis program.

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A simple, easy-to-apply effective torsional constant for the rotational stiffness of a restrained open section was developed. This effective torsional constant takes both the pure torsion and the warping torsion into account. The final result is a simple formula for a modified torsional constant, which is in terms of unbraced length and can be easily calculated. The constant then can be used for any generic finite-element structural analysis program.

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Available abstract

A simple, easy-to-apply effective torsional constant for the rotational stiffness of a restrained open section was developed. This effective torsional constant takes both the pure torsion and the warping torsion into account. The final result is a simple formula for a modified torsional constant, which is in terms of unbraced length and can be easily calculated. The constant then can be used for any generic finite-element structural analysis program.

Key concepts: Torsion constant, Torsion (gastropod), Image warping, Constant (computer programming), Stiffness, Section (typography), Simple (philosophy), Torsion spring

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