Structural Engineering and Mechanics
Volume 19, Number 2, 2005, pages 153-172
DOI: 10.12989/sem.2005.19.2.153
Nonlinear analysis using load-displacement control
Young-Doo Kwon , Hyun-Wook Kwon , Beom-Soo Lim
Abstract
A new load/displacement parameter method is proposed for the simultaneous control of applied loads and structural displacements at one or more points. The procedure is based on a generalized Riks?method, which utilizes load/displacement parameters as scaling factors to analyze post-buckling phenomena including snap-through or snap-back. The convergence characteristics are improved by employing new relaxation factors through an incremental displacement parameter, particularly in a region that exhibits severe numerical instability. The improved performance is illustrated by means of a numerical example.
Key Words
post-buckling phenomena; snap-back phenomena; incremental load parameter; incremental displacement parameter; relaxation factor; relaxation method.
Address
Young-Doo KwonSchool of Mechanical Engineering, Kyungpook National University, Daegu 702-701, KoreaHyun-Wook KwonGraduate School, Mechanical Engineering Department, Kyungpook National University, KoreaBeom-Soo LimAgency for Defense Development, Korea
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