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Abstract

In this paper a new element for analysis of thin-walled structures is presented, and the effects of secondary shear stresses on longitudinal displacements are examined. Since the Interpolation Functions are based on non-uniform torsional differential equations, the analysis of stiffness matrix is facilitated. Therefore, its ability to produce accurate results with the least number of elements is considerably improved. Furthermore, this element can be used in the analysis of all kinds of thin-walled, straight or curved beams with open or closed sections.

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