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Structural Engineering and Mechanics
  Volume 11, Number 2, February 2001 , pages 211-219
DOI: https://doi.org/10.12989/sem.2001.11.2.211
 


Folding analysis of reversal arch by the tangent stiffness method
Shin-ichi Iguchi, Shigeo Goto, Katsushi Ijima and Hiroyuki Obiya(Japan)

 
Abstract
    This paper presents the tangent stiffness method for 3-D geometrically nonlinear folding
analysis of a reversal arch. Experimental tests are conducted to verify the numerical analysis. The tangent
stiffness method can accurately evaluate the geometrical nonlinearity due to the element translating as a
rigid body, and the method can exactly handle the large rotation of the element in space. The arch in the
experiment is made from a thin flat bar, and it is found that the folding process of the arch may be
captured exactly by the numerical analysis with a model consisting of only 18 elements with the same
properties.
 
Key Words
    large displacement analysis; geometrical nonlinearity; finite rotation; folding experiment.
 
Address
Shin-ichi Iguchi and Shigeo Goto, FORUMEIGHT Ltd., 1-31 Tenya-machi, Hakata-ku Fukuoka, Japan
Katsushi Ijima and Hiroyuki Obiya, Department of Civil Engineering, Saga University, 1 Honjou Saga, Japan
 

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