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http://dx.doi.org/10.7734/COSEIK.2017.30.1.1

Development of Nine-node Co-rotational Planar Element for Elastoplastic/Contact Analysis  

Cho, Hae-Seong (Department of Aerospace and Mechanical Engineering, Seoul National University)
Joo, Hyun-Shig (Department of Aerospace and Mechanical Engineering, Seoul National University)
Shin, Sang Joon (Department of Aerospace and Mechanical Engineering, Seoul National University)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.30, no.1, 2017 , pp. 1-6 More about this Journal
Abstract
This paper presents development of the nine-node co-rotational(CR) planar element applicable for elastoplastic and contact analysis. The CR formulation is one of the efficient geometrically nonlinear formulations. It is based on the assumptions of small strain and large displacement. Further, it is extended to both elastoplastic analysis and contact analysis in this paper. For accurate plastic analysis, nine-node quadrilateral element, which can provide accurate stress prediction, is chosen. Bi-linear hardening rule based on Newton- Raphson return-mapping is employed. Also, Lagrange multiplier is used in order for constraints regarding the contact analysis. The present development is validated via the time transient problems. The present results are compared with those obtained by the other existing software.
Keywords
co-rotational formulation; elastoplastic analysis; contact analysis;
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Times Cited By KSCI : 1  (Citation Analysis)
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