2軸効果を考慮したハイブリッド型応力法高次平面はり柱要素

概要

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Hybrid stress plane beam-column finite elements considering the higher order shear deformation and the bi-axial effect in stresses and strains are developed. Shear-deformable plane beam-column theory shown in Refs. 1) and 2), which is based on the assumption of no in-plane strains of the section and higher order than the well-known Timoshenko's theory, is employed and revised to introduce the bi-axial effect in stresses and strains. 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. Also, lateral displacement field is reset up to evaluate the lateral deformation components right and precisely. According to Refs. 8) and 9), hybrid stress finite element method is unifiedly formulated, and a new series of plane beam-column elements is derived. Several numerical tests are performed, and the availability and the applicability of the present approach are discussed and examined.
社団法人日本建築学会の論文
2005-01-30