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Journal cover: Engineering Computations

Engineering Computations

ISSN: 0264-4401

Online from: 1984

Subject Area: Mechanical & Materials Engineering

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Advances in two-dimensional structural loadflow visualisation

Document Information:
Title:Advances in two-dimensional structural loadflow visualisation
Author(s):W. Waldman, (DSTO-Aeronautical and Maritime Research Laboratory (AMRL), Melbourne, Australia), M. Heller, (DSTO-Aeronautical and Maritime Research Laboratory (AMRL), Melbourne, Australia), R. Kaye, (DSTO-Aeronautical and Maritime Research Laboratory (AMRL), Melbourne, Australia), F. Rose, (DSTO-Aeronautical and Maritime Research Laboratory (AMRL), Melbourne, Australia)
Citation:W. Waldman, M. Heller, R. Kaye, F. Rose, (2002) "Advances in two-dimensional structural loadflow visualisation", Engineering Computations, Vol. 19 Iss: 3, pp.305 - 326
Keywords:Finite element analysis, Plate structures
Article type:Research Paper
DOI:10.1108/02644400210697456 (Permanent URL)
Publisher:MCB UP Ltd
Abstract:In recent years, a novel method for computing loadflow orientations and loadpaths, which is based on iterative solutions of non-linear equations and finite element results, has emerged in the literature. In the present investigation, the prior formulation and approach has been enhanced by deriving explicit expressions for computing loadflow orientations. The new equations produce more accurate loadflow orientations and improve the fidelity of calculated loadpaths. In particular, for a typical loaded plate containing a hole, the density of loadflow lines is also shown to provide accurate values of stress concentration factor. Subsequently, loadflow visualisation for biaxially loaded plates containing non-optimal and optimal holes is undertaken to identify key features of the stress distributions. It is found that regions of “recirculation” are apparent for non-optimal hole shapes, whereas no recirculation zones are present for optimal shapes. In general, it is considered that loadflow visualisation is a simple but powerful tool for use by structural designers and analysts.

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