Structural Engineering and Mechanics

Volume 67, Number 3, 2018, pages 291-300

DOI: 10.12989/sem.2018.67.3.291

Single variable shear deformation model for bending analysis of thick beams

Salima Abdelbari , Lemya Hanifi Hachemi Amar , Abdelhakim Kaci , Abdelouahed Tounsi

Abstract

In this work, a new trigonometry theory of shear deformation is developed for the static analysis of thick isotropic beams. The number of variables used in this theory is identical to that required in the theory of Euler-Bernoulli, sine function is used in the displacement field in terms of the coordinates of the thickness to represent the effects of shear deformation. The advantage of this theory is that shear stresses can be obtained directly from the relationships constitute, while respecting the boundary conditions at the free surface level of the beam. Therefore, this theory avoids the use of shear correction coefficients. The differential equilibrium equations are obtained using the principle of virtual works. A thick isotropic beam is considered, whose numerical study to show the effectiveness of this theory.

Key Words

thick beam; high order theory; virtual working principle; bending

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