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Paper Information

Journal:   MODARES MECHANICAL ENGINEERING   MARCH 2017 , Volume 16 , Number 12 ; Page(s) 756 To 766.
 
Paper: 

CLOSED FORM SOLUTIONS FOR INELASTIC CYCLIC BENDING OF STEEL TUBULARS USING CONTINUOUS STRESS-STRAIN MODEL

 
 
Author(s):  MOTAMEDI MOHAMMAD, ZEINODDINI MOSTAFA*, FAKHERI JAVAD
 
* DEPARTMENT OF CIVIL ENGINEERING, K.N. TOOSI UNIVERSITY OF TECHNOLOGY, TEHRAN, IRAN
 
Abstract: 

The current paper deals with the cyclic softening/hardening and strain ratcheting behavior of circular steel tubes under repeated inelastic pure bending. A relatively simple mathematical solution is proposed to tackle the problem. Key physical features involved are the elastic after-effect, accumulated cyclic (creep type) ovalisation of the cross-section, cyclic plasticity including the Bauschinger effect, cyclic softening/hardening of the material and ratcheting effect. The moment-curvature formulation of the tube is derived in an ovalised configuration. Tvergaard stress-strain relation is used to describe the elastoplastic stress–strain relationship of the material. This continuous nonlinear constitutive model considerably abridges the solution. A combined nonlinear kinematic/nonlinear isotropic hardening rule is used to describe the cyclic uniaxial stress-strain. The analysis of the low cycle pure inelastic bending of the tube is performed under a curvature-control regime. The cycle by cycle growth (creep type) in the ovalization of the cross-section is modeled using a modified version of the Bailey–Norton creep law.
The model predictions are examined against a number of available test data on the inelastic monotonic and cyclic bending of tubes and reasonable agreements are observed.

 
Keyword(s): STEEL CIRCULAR TUBULAR, MONOTONIC AND CYCLIC INELASTIC PURE BENDING, CYCLIC SOFTENING/ HARDENING BEHAVIOR
 
 
References: 
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Citations: 
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+ Click to Cite.
APA: Copy

MOTAMEDI, M., & Zeinoddini, M., & FAKHERI, J. (2017). CLOSED FORM SOLUTIONS FOR INELASTIC CYCLIC BENDING OF STEEL TUBULARS USING CONTINUOUS STRESS-STRAIN MODEL. MODARES MECHANICAL ENGINEERING, 16(12 ), 756-766. https://www.sid.ir/en/journal/ViewPaper.aspx?id=573051



Vancouver: Copy

MOTAMEDI MOHAMMAD, Zeinoddini Mostafa, FAKHERI JAVAD. CLOSED FORM SOLUTIONS FOR INELASTIC CYCLIC BENDING OF STEEL TUBULARS USING CONTINUOUS STRESS-STRAIN MODEL. MODARES MECHANICAL ENGINEERING. 2017 [cited 2021August01];16(12 ):756-766. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=573051



IEEE: Copy

MOTAMEDI, M., Zeinoddini, M., FAKHERI, J., 2017. CLOSED FORM SOLUTIONS FOR INELASTIC CYCLIC BENDING OF STEEL TUBULARS USING CONTINUOUS STRESS-STRAIN MODEL. MODARES MECHANICAL ENGINEERING, [online] 16(12 ), pp.756-766. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=573051.



 
 
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