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In-plane torsional stiffness in a macro-panel element for practical finite element modelling
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Li, T.Q., Ward, T. and Lewis, W. J. (Wanda J.) (2018) In-plane torsional stiffness in a macro-panel element for practical finite element modelling. Advances in Engineering Software, 122 . pp. 93-105. doi:10.1016/j.advengsoft.2018.04.008 ISSN 1873-5339.
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WRAP-in-plane-torsional-stiffness-macro-panel-element-practical-finite-element-modelling-Lewis-2018.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (1068Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.advengsoft.2018.04.008
Abstract
Finite element (FE) analysis produces results, which, in most cases, gain in accuracy, as the size of the FE mesh is reduced. However, this is not necessarily the case when beam and shell element connections induce in-plane torsional effects in the shell. In such situations, shell elements either do not allow for an in-plane torsional stiffness, or, when present, the in-plane torsional stiffness is incorrectly affected by the sizes of the elements. To overcome this problem, we propose a macro- panel element that has fewer degrees of freedom, includes a new model for in-plane torsional stiffness, and produces results with sufficient accuracy to meet engineering requirements. The panel element is based on the principle of sub-structuring, i.e., the panel is meshed internally by smaller shell elements. As shown in the paper, the proposed panel element can be quite large, yet, it can give accurate analysis results. This work helps to overcome a common dilemma in practical use of finite element analysis, where finite element theory requires element sizes to be sufficiently small, but practical considerations suggest the use of large-size elements that simplify the modelling process and reduce excesses in generated results. A model built using macro-panel elements is equivalent to the model built using smaller shell elements, with the normal and shear stresses in the former being the same as the stresses in the finely meshed shell element model, We identify a number of performance benefits that become available as a consequence of modelling the shell elements at a higher level of abstraction.
Item Type: | Journal Article | ||||||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Library of Congress Subject Headings (LCSH): | Finite element method -- Software | ||||||||
Journal or Publication Title: | Advances in Engineering Software | ||||||||
Publisher: | Elsevier | ||||||||
ISSN: | 1873-5339 | ||||||||
Official Date: | August 2018 | ||||||||
Dates: |
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Volume: | 122 | ||||||||
Page Range: | pp. 93-105 | ||||||||
DOI: | 10.1016/j.advengsoft.2018.04.008 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 31 May 2018 | ||||||||
Date of first compliant Open Access: | 30 May 2019 |
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