Engineering Transactions, 69, 2, pp. 211–221, 2021
10.24423/EngTrans.1294.20210607

Estimation of the Torsional Rigidity of Orthotropic Solid Cross Section

István ECSEDI
University of Miskolc
Hungary

Attila BAKSA
University of Miskolc
Hungary

In this paper, two inequality relations are proven for the torsional rigidity of orthotropic elastic solid cross sections. By using the derived inequality relations, lower and upper bounds can be obtained for the torsional rigidity. All results of the paper follow from the Saint-Venant theory of uniform torsion. The presented bounding formulae are based on the mean value theorem of integral calculus.

Keywords: Saint-Venant torsion; orthotropic; torsional rigidity; Barta-type inequality
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DOI: 10.24423/EngTrans.1294.20210607