Refined Non-Conforming Five-Node Thin Flat Shell Element

Year 2009, Volume: 1 Issue: 2, 16 - 32, 01.06.2009

H. Gedikli H. Sofuoğlu

Abstract

In this study, a new 5-node discrete Kirchhoff flat shell element with 30 degrees of freedom (dof), called DKP30, was proposed. This element was developed by superposing the15-dof membrane element and the 15-dof plate bending element at the element level. In developing procedure Allmansi interpolation function was utilized for drilling dof of the membrane element while the plate bending element was derived via discrete Kirchhoff plate formulation. In order to test its performance the patch test was first applied to the DKP30 element and it was then subjected to the standard test problems and compared with the shell elements available in the literature. The numerical results showed that the proposed 5-node thin flat shell element, DKP30, passed the patch test and presented moderate accuracy and high performance while its usage as a transition element with a 4-node DKQ24 thin flat shell element was also found to be possible

Keywords

5-node Membrane Element, 5-node Plate Bending Element, 5-node Flat Shell Element, Discrete Kirchhoff Formulation.

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