Development of a strain-smoothed three-node triangular flat shell element with drilling degrees of freedom

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This paper proposes a three node triangular flat shell element based on the assumed natural deviatoric strain (ANDES) formulation. The free parameters included in the ANDES formulation are presented for better use of the proposed element in curved shell geometries. In order to further enhance the element behavior, a strain smoothing technique is applied to the derivation of the membrane stiffness of the proposed element. Furthermore, in order to avoid the drill rotation locking that is typically induced by the drilling degrees of freedom, a simple modification factor is introduced. Various benchmark examples are tested in order to verify the performance of the proposed element.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2014-09
Language
English
Article Type
Article
Keywords

SOLID MECHANICS PROBLEMS; PLATE-BENDING TRIANGLES; METHOD NS-FEM; FINITE-ELEMENTS; FORMULATION; ROTATIONS; LOCKING

Citation

FINITE ELEMENTS IN ANALYSIS AND DESIGN, v.86, pp.71 - 80

ISSN
0168-874X
DOI
10.1016/j.finel.2014.04.002
URI
http://hdl.handle.net/10203/189119
Appears in Collection
ME-Journal Papers(저널논문)
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