2007 Volume 72 Issue 620 Pages 59-66
A new and effective hybrid stress 2D finite element based on the plane beam-column theory considering higher order shear deformation and the bi-axial effect in stresses and strains is developed. Using the so-called semi-inverse method, the shearing and the lateral normal stresses as well as the axial normal one are prepared in expression of resultant stresses of the beam-column. These stress fields compose the completely equilibrated ones in the plane stress state. Standard polynomial expansions are employed as the displacement fields on inter-element boundaries. According to the standard hybrid stress finite element procedure shown in the previous papers, a new 2D finite element with the present stress fields is derived, and the availability and the applicability of the present approach are, with aid of several numerical tests, discussed and examined.
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