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9.193 Lectures/texts in conference proceedings
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  • XII International Conference on Computational Plasticity: fundamentals and applications (COMPLAS 2013), Barcelona, 3-5 September, 2013
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  • XII International Conference on Computational Plasticity: fundamentals and applications (COMPLAS 2013), Barcelona, 3-5 September, 2013
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An analytical model for elasto-plastic buckling of columns

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hdl:2117/182690

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Jowhari Moghadam, S.
Izzuddin, B.A.
Document typeConference report
Defense date2013
PublisherCIMNE
Rights accessOpen Access
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
The theory of buckling strength of compression members in the plastic range has been extensively studied, and numerical methods already exist which deal with such behaviour. However, there is significant research interest in developing analytical models for elasto-plastic buckling, largely driven by the need for simplified mechanics-based design tools, but also by the desire for enhanced understanding of this complex phenomenon. This paper is intended to illustrate the mechanics of the elasto-plastic buckling response of stocky columns by means of a simplified analytical model, starting from the point of buckling initiation and considering the post-buckling response. In this model, the Rotational Spring Analogy is used for formulating the geometric stiffness matrix, whereas the material stiffness matrix is obtained with due consideration for the spread of material plasticity. In addition to establishing some key features of elasto-plastic buckling, the imperfection sensitivity in the plastic range is also studied and as a result a threshold level of imperfection is identified.
URIhttp://hdl.handle.net/2117/182690
ISBN978-84-941531-5-0
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  • COMPLAS - XII International Conference on Computational Plasticity: fundamentals and applications (COMPLAS 2013), Barcelona, 3-5 September, 2013 [137]
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