Development of a finite element via Unified Formulation: Implementation as a User Element subroutine to predict stress profiles in composite plates

• Type: Article in International Scientific Journal
• Date: 2020

Authors

Ferreira, GFO (Author) Other; Almeida, JHS (Author) Other; Ribeiro, ML (Author) Other; Ferreira, AJM (Author) FEUP; Tita, V (Author) Other

Journal

Title: Thin-Walled Structures

Vol. 157

ISSN: 0263-8231

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 3 Citations

Other information

Authenticus ID: P-00S-VKB

DOI: 10.1016/j.tws.2020.107107

Abstract (EN): 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).

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 19