Advanced Steel Construction

Vol. 12, No. 4, pp.466-486(2016)


GENERALISED ELEMENT LOAD METHOD WITH WHOLE DOMAIN

ACCURACY FOR RELIABLE STRUCTURAL DESIGN

 

Chi-Kin Iu

Lecturer, School of Civil Engineering and Built Environment

Queensland University of Technology

QUT Brisbane, QLD, Australia

(Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)

Received: 6 November 2015; Revised: 29 November 2015; Accepted: 7 December 2015

 

DOI:10.18057/IJASC.2016.12.4.6

 

ABSTRACT:

This paper presents a formulation to capture all kinds of second-order effects (i.e. discrete nodal displacement as the numerical approach: P-D & P-d effect, large displacement, snap-through buckling, initial imperfection, etc.) for members under loads along their lengths. The efficient computational formulation of the generalised element load method (GELM) is proposed which gives accurate element and nodal solutions when using the one-element-per-member model. It is believed the GELM provides a reliable and efficient method for improving the second-order analysis for design of practical structures.

 

Keywords:

Generalised element load method; second-order elastic analysis; one element per member; higher-order element formulation; initial imperfection; element solutions

 

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