Two stress relaxation constitutive models have been developed to predict the stress relaxation behavior for high-temperature bolting according to continuum damage mechanics, Kachanov–Robatnov (K–R), and Othman–Hayhurst (O–H) creep constitutive equations as well as stress relaxation strain equations. To validate the effectiveness of constitutive equations, the predicted results were compared with the experimental data of uniaxial isothermal stress relaxation tests using 1Cr10NiMoW2VNbN steel. The results show that the results obtained by the stress relaxation constitutive model based on the K–R creep equation overestimates the stress relaxation behavior, while the model deduced by the O–H creep equation is more in agreement with the experimental data. Moreover, the stress relaxation damage predicted increases with the increment of initial stress significantly. These indicate that the new models can predict the stress relaxation behavior of high-temperature bolting well.
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Anyang Institute of Technology,
Henan 455000,
e-mail: yefu111@163.com
Wuhan Institute of Technology,
Hubei 430073,
Anyang Institute of Technology,
Henan 455000,
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February 2014
Research-Article
A Unified Continuum Damage Mechanics Model for Predicting the Stress Relaxation Behavior of High-Temperature Bolting
J. Q. Guo,
Anyang Institute of Technology,
Henan 455000,
e-mail: yefu111@163.com
J. Q. Guo
1
Laboratory of Mechanical Structural Strength
,Anyang Institute of Technology,
1Yellow-River Avenue, Anyang
,Henan 455000,
China
e-mail: yefu111@163.com
1Corresponding author.
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X. T. Zheng,
Wuhan Institute of Technology,
Hubei 430073,
X. T. Zheng
School of Mechanical Engineering
,Wuhan Institute of Technology,
693 Xiongchu Avenue, Wuhan
,Hubei 430073,
China
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W. Z. Meng
Anyang Institute of Technology,
Henan 455000,
W. Z. Meng
Laboratory of Mechanical Structural Strength
,Anyang Institute of Technology,
1Yellow-River Avenue, Anyang
,Henan 455000,
China
Search for other works by this author on:
J. Q. Guo
Laboratory of Mechanical Structural Strength
,Anyang Institute of Technology,
1Yellow-River Avenue, Anyang
,Henan 455000,
China
e-mail: yefu111@163.com
X. T. Zheng
School of Mechanical Engineering
,Wuhan Institute of Technology,
693 Xiongchu Avenue, Wuhan
,Hubei 430073,
China
W. Z. Meng
Laboratory of Mechanical Structural Strength
,Anyang Institute of Technology,
1Yellow-River Avenue, Anyang
,Henan 455000,
China
1Corresponding author.
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received July 11, 2012; final manuscript received June 24, 2013; published online October 23, 2013. Assoc. Editor: Hakim A. Bouzid.
J. Pressure Vessel Technol. Feb 2014, 136(1): 011203 (6 pages)
Published Online: October 23, 2013
Article history
Received:
July 11, 2012
Revision Received:
June 24, 2013
Citation
Guo, J. Q., Zheng, X. T., Zhang, Y., Shi, H. C., and Meng, W. Z. (October 23, 2013). "A Unified Continuum Damage Mechanics Model for Predicting the Stress Relaxation Behavior of High-Temperature Bolting." ASME. J. Pressure Vessel Technol. February 2014; 136(1): 011203. https://doi.org/10.1115/1.4025084
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