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http://dx.doi.org/10.12989/sem.2013.45.5.613

Out-of-plane elastic buckling of truss beams  

Fedoroff, Alexis (Department of Civil and Structural Engineering, Aalto University)
Kouhia, Reijo (Department of Engineering Design, Tampere University of Technology)
Publication Information
Structural Engineering and Mechanics / v.45, no.5, 2013 , pp. 613-629 More about this Journal
Abstract
In this article we will present a method to directly evaluate the critical point of a non-linear system by using the solution of a polynomial eigenvalue approximation as a starting point for an iterative non-linear system solver. This method will be used to evaluate out-of-plane buckling properties of truss structures for which the lateral displacement of the upper chord has been prevented. The aim is to assess for a number of example structures whether or not the linearized eigenvalue solution gives a relevant starting point for an iterative non-linear system solver in order to find the minimum positive critical load.
Keywords
truss structures; out-of-plane buckling; non-linear iterative solver; polynomial eigenvalue problem;
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