TY - JOUR
T1 - Development of a finite element via Unified Formulation: Implementation as a User Element subroutine to predict stress profiles in composite plates
AU - Ferreira, Gregório F. O.
AU - Almeida Jr, Jose Humberto S.
AU - Ribeiro, Marcelo L.
AU - Ferreira, António J. M.
AU - Tita, Volnei
PY - 2020/12
Y1 - 2020/12
N2 - Unified formulations (UF) have been increasingly used to analyze laminated plates and shells. A huge number of works was carried out via in-house software, but only few contributions were presented using UF linked to a FE commercial software. In addition, the implementation of a UF within a FE commercial software remains a black box. This work aims at unlocking the difficulties on implementing a UF within the FE software Abaqus. Therefore, an eight-node plate element is developed via a UF and implemented as a User Element subroutine (UEL). In order to evaluate potentialities and limitations of the implemented UEL subroutine, benchmarking cases are evaluated investigating laminated plates under concentrated and distributed load. The displacement fields and, mainly, stress profiles are predicated by three different approaches: i) in-house Matlab framework; ii) standard shell and solid finite elements from Abaqus; and iii) from self-developed finite elements using CUF (via UEL).
AB - Unified formulations (UF) have been increasingly used to analyze laminated plates and shells. A huge number of works was carried out via in-house software, but only few contributions were presented using UF linked to a FE commercial software. In addition, the implementation of a UF within a FE commercial software remains a black box. This work aims at unlocking the difficulties on implementing a UF within the FE software Abaqus. Therefore, an eight-node plate element is developed via a UF and implemented as a User Element subroutine (UEL). In order to evaluate potentialities and limitations of the implemented UEL subroutine, benchmarking cases are evaluated investigating laminated plates under concentrated and distributed load. The displacement fields and, mainly, stress profiles are predicated by three different approaches: i) in-house Matlab framework; ii) standard shell and solid finite elements from Abaqus; and iii) from self-developed finite elements using CUF (via UEL).
U2 - 10.1016/j.tws.2020.107107
DO - 10.1016/j.tws.2020.107107
M3 - Article
SN - 0263-8231
VL - 157
JO - Thin-Walled Structures
JF - Thin-Walled Structures
M1 - 107107
ER -