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Structural Engineering and Mechanics Volume 19, Number 2, January30 2005 , pages 153-172 DOI: https://doi.org/10.12989/sem.2005.19.2.153 |
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Nonlinear analysis using load-displacement control |
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Young-Doo Kwon, Hyun-Wook Kwon and Beom-Soo Lim
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| 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 Kwon School of Mechanical Engineering, Kyungpook National University, Daegu 702-701, Korea Hyun-Wook Kwon Graduate School, Mechanical Engineering Department, Kyungpook National University, Korea Beom-Soo Lim Agency for Defense Development, Korea | ||