Material non-linear beam element with shear capacity

Abstract eng:
The paper describes a new formulation of beam elements for deformational variant of FEM, which respects non-linear material behaviour. This formulation considers combination of shear and axial loading and is suitable for short or torque beams similarly to the Timoshenko theory. Non-uniform warping and influence of transversal contraction are not considered in the formulation. The cross section can be of arbitrary known shape and composed of more materials. The presented element respect real distribution shear stress over cross section taking material non-linearity into consideration

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