Triangular prismatic solid-shell element with generalised deformation description

Mataix, Vicente; Flores, Fernando G.; Rossi, Riccardo; Oñate, Eugenio

doi:10.1080/17797179.2017.1340013

Cited by 1 publication

(1 citation statement)

References 22 publications

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“…In 1970, Ahmad et al proposed this approach, for the first time, to analyze thin and thick curved shell structures [1]. After that, this method was developed by many other researchers using different types of shell element [2][3][4][5][6][7]. To improve this approach, some studies were performed by using strain interpolation.…”

Section: Introductionmentioning

confidence: 99%

A 6-parameter triangular flat shell element for nonlinear analysis

Rezaiee‐Pajand

Masoodi

Arabi

2019

TECM

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In this paper, an improved flat triangular shell element is proposed. This element has three nodes, and in each node, six degrees of freedom are considered. Since there are three rotational degrees of freedom at each node, the drilling effect can be incorporated in authors' formulation. A new procedure is also suggested for updating the director vectors about which the rotational degrees of freedom are defined. In order to study large displacements and rotations, Total Lagrangian principles are employed. In addition, updating the rotational degrees of freedom is implemented using enriched updated director vectors, which are formulated based on the finite rotation method. On the other hand, small strains are considered in this formulation. By utilizing MITC method, shear and membrane locking is mitigated from new element. To examine the performance, the element passes three basic tests, including isotropy, and patch test. Moreover, a convergence study is also implemented to show the elemental behavior. Several popular benchmarks are considered to illustrate the accuracy and capability of the suggested element in geometrically nonlinear analyses.

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