STIFFNESS CALCULATION OF ARBITRARY REINFORCED CONCRETE CROSS SECTIONS BASED ON ISOPARAMETRIC ELEMENT THEORY

Li Hao; Diao Bo

doi:10.13204/j.gyjz200711011

Volume 37 Issue 11

Dec. 2014

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Li Hao, Diao Bo. STIFFNESS CALCULATION OF ARBITRARY REINFORCED CONCRETE CROSS SECTIONS BASED ON ISOPARAMETRIC ELEMENT THEORY[J]. INDUSTRIAL CONSTRUCTION, 2007, 37(11): 38-41. doi: 10.13204/j.gyjz200711011

Citation:

Li Hao, Diao Bo. STIFFNESS CALCULATION OF ARBITRARY REINFORCED CONCRETE CROSS SECTIONS BASED ON ISOPARAMETRIC ELEMENT THEORY[J]. INDUSTRIAL CONSTRUCTION, 2007, 37(11): 38-41. doi: 10.13204/j.gyjz200711011

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STIFFNESS CALCULATION OF ARBITRARY REINFORCED CONCRETE CROSS SECTIONS BASED ON ISOPARAMETRIC ELEMENT THEORY

doi: 10.13204/j.gyjz200711011

Li Hao,
Diao Bo

1.
Dept.of Civil Engineering,Beijing University of Aeronautics and Astronautics Beijing 100083

Received Date: 2006-10-10
Publish Date: 2007-11-20

Abstract

Abstract

Through coordinate transformation corresponding to the isoparametric element theory, calculation of an abnormal element in Cartesian coordinate system is converted to a regular element in natural coordinate system.Applying this finite element technique to nonlinear ful-l range analysis theory of arbitrary reinforced concrete cross-sections, useful expressions of cross-section s strain field and stiffness matr ix in natural coordinate system are derived.In square element, procedure of carrying out Gauss integral to obtain every component of the stiffness matrix is proposed.This method makes numerical analysis methods of various shapes uniformed with one model.A comparison between the numerical analysis by arc-length method and the test results shows good agreements in ultimate loads
- reinforced concrete,
- arbitrary cross-section,
- isoparametric element,
- Gauss integral,
- nonline

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References(7)

References

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