Please wait a minute...

Frontiers of Mechanical Engineering

Front Mech Eng    2013, Vol. 8 Issue (2) : 181-186     https://doi.org/10.1007/s11465-013-0257-7
RESEARCH ARTICLE
A model for creep life prediction of thin tube using strain energy density as a function of stress triaxiality under quasi-static loading employing elastic-creep & elastic-plastic-creep deformation
Tahir MAHMOOD1,2(), Sangarapillai KANAPATHIPILLAI1, Mahiuddin CHOWDHURY1
1. School of Mechanical and Manufacturing Engineering, The University of New South Wales (UNSW), Sydney, NSW 2052, Australia; 2. L&A Pressure Welding Pty Ltd., Sydney, NSW 2212, Australia
Download: PDF(319 KB)   HTML
Export: BibTeX | EndNote | Reference Manager | ProCite | RefWorks
Abstract

This paper demonstrates the application of a new multiaxial creep damage model developed by authors using stress traixiality to predict the failure time of a component made of 0.5%Cr-0.5%Mo-0.25%V low alloy steel. The model employs strain energy density and assumes that the uniaxial strain energy density of a component can be easily calculated and can be converted to multi-axial strain energy density by multiplying it to a function of stress trixiality which is a ratio of mean stress to equivalent stress. For comparison, an elastic-creep and elastic-plastic-creep finite element analysis (FEA) is performed to get multi-axial strain energy density of the component which is compared with the calculated strain energy density for both cases. The verification and application of the model are demonstrated by applying it to thin tube for which the experimental data are available. The predicted failure times by the model are compared with the experimental results. The results show that the proposed model is capable of predicting failure times of the component made of the above-mentioned material with an accuracy of 4.0%.

Keywords elastic-creep      elastic-plastic-creep      stress triaxiality      life prediction      pressure vessels      finite element analysis (FEA)     
Corresponding Author(s): MAHMOOD Tahir,Email:tahir.mahmood@student.unsw.edu.au   
Issue Date: 05 June 2013
 Cite this article:   
Mahiuddin CHOWDHURY,Tahir MAHMOOD,Sangarapillai KANAPATHIPILLAI. A model for creep life prediction of thin tube using strain energy density as a function of stress triaxiality under quasi-static loading employing elastic-creep & elastic-plastic-creep deformation[J]. Front Mech Eng, 2013, 8(2): 181-186.
 URL:  
http://journal.hep.com.cn/fme/EN/10.1007/s11465-013-0257-7
http://journal.hep.com.cn/fme/EN/Y2013/V8/I2/181
Fig.1  Axisymmetric finite element model of the thin-walled cylinder
Fig.2  Uniaxial stress-strain curve of 0.5%Cr-0.5%Mo-0.25%V steel at 565°C []
Fig.3  Hoop stress versus radial distance at various time points computed using an elastic-creep analysis
Fig.4  Von Mises equivalent stress versus radial distance at various time points computed using an elastic-creep analysis
Fig.5  Hoop stress versus radial distance at various time points computed using an elastic-plastic-creep analysis
Fig.6  Von Mises equivalent stress versus radial distance at various time points computed using an elastic-plastic-creep analysis
Fig.7  Comparison of triaxiality factor, uniaxial and multi-axial strain energy density for elastic-creep analysis
Fig.8  Comparison of triaxiality factor, uniaxial and multi-axial strain energy density for elastic-plastic-creep analysis
MethodStress /MPaLife predicted /hError /%
Experimental-4784-
Proposed modelElastic-creep-5210-8.9
Proposed modelElastic-plastic-creep-4950-3.47
Reference stress1389493-98.43
Skeletal stressElastic-creepσvon Mises = 1418412-75.84
σhoop = 1476623-38.44
Skeletal stressElastic-plastic-creepσvon Mises = 1399111-90.45
σhoop = 1486365-33.05
Robinson ruleElastic creepσvon Mises6994 [8]-46
σhoop7167 [8]-50
Robinson ruleElastic-plastic-creepσvon Mises8542 [8]-79
σhoop7979 [8]-67
Tab.1  Comparison of the life of the vessel using various models
1 Ng L, Zarrabi K. A multiaxial creep damage hypothesis and its application to predict life of 2.25%Cr-1%Mo (Bridgman) notched bars. In: Proceedings of the ICMEM, Int Conf Mech Eng and Mechanics (Nanjing, China) . USA: Science Press, 2005, 127-130
2 Ng L, Zarrabi K. Creep life prediction of 0.5%Cr-0.25%V thick walled cylinder using new multiaxial approach. In: Proceedings of the IMECE, CD-ROM, ASME, Int Mech Cong and Expo , Orlando, Florida, USA, 2005
3 Zarrabi K, Ng L. A novel and simple approach for predicting creep life based on tertiary creep behaviour. ASME Journal of Pressure Vessels Technology , 2008, 130: 041201 (10 pages)
4 Ng L, Zarrabi K. A creep damage model for predicting failure on multi-material-cross-weld components. In: Proceedings of the Structural Integrity & Failure Conference, CD-ROM, Sydney, Australia , 27-29, September, 2006
5 Zarrabi K, Ng L. On integrity assessment of axisymmetric components operating within creep regime. The Chinese Journal of Mechanical Engineering , 2006, 19(4): 492-495
6 Zarrabi K, Ng L. Energy-based paradigm for predicting creep damage/life of axisymmetric components. International Journal of Science and Technology - Scientia Iranica - Transactions on Mechanical and Civil Engineering , 2007, 14(5): 450-457
7 Ng L, Zarrabi K. On creep failure of notched bars. Engineering Failure Analysis , 2008, 15(6): 774-786
8 Mahmood T, Jelwan J, Zarrabi K. Comparison of various life prediction models under quasi-static loading and non-linear material behaviour. International Journal of Reliability and Safety of Engineering Systems and Structures, Part D, IJRSESS , 2011, 1(1): 43-51
9 High temperature design data for ferritic pressure vessel steels. The Creep of Steel Working Party of the Institution of Mechanical Engineers, London , 1980
10 RCC-MR. Design and construction rules for mechanical components of FBR nuclear islands. Section 1, Subsection Z: Technical Appendix A3, AFCEN, Paris , 1985
11 Norton F H. The Creep of Steel at High Temperatures . London: McGraw-Hill, 1929
12 Brown R J. Creep rupture testing of tubular model. In: Gooch D J, How I M, eds. Techniques for Multiaxial Creep Testing . London: Elsevier Applied Science, 1985, 311-332
13 Assessment Procedure for the High Temperature Response of Structures, R5. Berkeley Technology Centre, Nuclear Electric plc , July1995 (Issue 2)
14 ANSYS Release 13, ANSYS, Inc, USA , May2010
15 Wilshire B, Scharning P J. Extrapolation of creep life data for 1Cr-0.5Mo steel. International Journal of Pressure Vessels and Piping , 2008, 85(10): 739-743
Related articles from Frontiers Journals
[1] Lei XU,Huajun CAO,Hailong LIU,Yubo ZHANG. Assessment of fatigue life of remanufactured impeller based on FEA[J]. Front. Mech. Eng., 2016, 11(3): 219-226.
[2] Zhihua ZHANG,Huichen YU,Chengli DONG. LCF behavior and life prediction method of a single crystal nickel-based superalloy at high temperature[J]. Front. Mech. Eng., 2015, 10(4): 418-423.
[3] Jorge Alberto Rodriguez DURAN,Ronney Mancebo BOLOY,Rafael Raider LEONI. Some remarks on the engineering application of the fatigue crack growth approach under nonzero mean loads[J]. Front. Mech. Eng., 2015, 10(3): 255-262.
[4] Song YU, Weiming FENG. Experimental research on ductile fracture criterion in metal forming[J]. Front Mech Eng, 2011, 6(3): 308-311.
[5] Shoujun CHEN, Qiang LI, Qi AN, . Calculation method of radial stress and deformation on conic threaded connections with interference fit[J]. Front. Mech. Eng., 2010, 5(3): 302-307.
[6] Subhash ANURAG, Yuebin GUO, . Predictive model to decouple the contributions of friction and plastic deformation to machined surface temperatures and residual stress patterns in finish dry cutting[J]. Front. Mech. Eng., 2010, 5(3): 247-255.
[7] SHANG De-guang, SUN Guo-qin, DENG Jing, YAN Chu-liang. Nonlinear cumulative damage model for multiaxial fatigue[J]. Front. Mech. Eng., 2006, 1(3): 265-269.
Viewed
Full text


Abstract

Cited

  Shared   0
  Discussed