Local formulation for elasto-plastic corotational thin-walled beams based on higher-order curvature terms

• The paper deals with the derivation of a local elasto-plastic finite element formulation of three dimensional corotational beams with arbitrary cross- section. Based on Bernoulli beam kinematics, an improved displacement field is constructed by inclusion of second-order terms of cross-section local rotations. The formulation captures both the Saint-Venant and warping torsional effects of open cross sections. Numerical tests show that the inclusion of the second-order terms of the local bending curvatures gives more accurate and more efficient element that allows a significant reduction of the computational time.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Samhällsbyggnadsteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Civil Engineering (hsv//eng)

Nyckelord

Geometrically nonlinear beam

Three-dimensional corotational formulation

Finite element analysis

Arbitrary cross-section

Bending curvatures

Elasto-plasticity

Building engineering

Byggnadsteknik

Publikations- och innehållstyp

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