A computational strategy to establish algebraic parameters for the Reference Resistance Design of metal shell structures

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Title: A computational strategy to establish algebraic parameters for the Reference Resistance Design of metal shell structures
Authors: Sadowski, AJ
Fajuyitan, OK
Wang, J
Item Type: Journal Article
Abstract: The new Reference Resistance Design (RRD) method, recently developed by Rotter [1], for the manual dimensioning of metal shell structures effectively permits an analyst working with only a calculator or spreadsheet to take full advantage of the realism and accuracy of an advanced nonlinear finite element (FE) calculation. The method achieves this by reformulating the outcomes of a vast programme of parametric FE calculations in terms of six algebraic parameters and two resistances, each representing a physical aspect of the shell's behaviour. The formidable challenge now is to establish these parameters and resistances for the most important shell geometries and load cases. The systems that have received by far the most research attention for RRD are that of a cylindrical shell under uniform axial compression and uniform bending. Their partial algebraic characterisations required thousands of finite element calculations to be performed across a four-dimensional parameter hyperspace (i.e. length, radius to thickness ratio, imperfection amplitude, linear strain hardening modulus). Handling so many nonlinear finite element models is time-consuming and the quantities of data generated can be overwhelming. This paper illustrates a computational strategy to deal with both issues that may help researchers establish sets of RRD parameters for other important shell systems with greater confidence and accuracy. The methodology involves full automation of model generation, submission, termination and processing with object-oriented scripting, illustrated using code and pseudocode fragments.
Issue Date: 18-Mar-2017
Date of Acceptance: 27-Feb-2017
URI: http://hdl.handle.net/10044/1/45080
DOI: https://dx.doi.org/10.1016/j.advengsoft.2017.02.012
ISSN: 1873-5339
Publisher: Elsevier
Start Page: 15
End Page: 30
Journal / Book Title: Advances in Engineering Software
Volume: 109
Copyright Statement: © 2017 The Authors. Published by Elsevier Ltd. This is an open access article under the CC-BY license. (http://creativecommons.org/licenses/by/4.0/)
Sponsor/Funder: Engineering and Physical Sciences Research Council
Funder's Grant Number: EP/N024060/1
Keywords: Science & Technology
Computer Science, Interdisciplinary Applications
Computer Science, Software Engineering
Engineering, Multidisciplinary
Computer Science
Metal shell structures
Reference Resistance Design
Finite element analysis
Object-oriented programming
Applied Mathematics
08 Information And Computing Sciences
09 Engineering
Publication Status: Published
Appears in Collections:Faculty of Engineering
Civil and Environmental Engineering

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