Determination of the flow curve of necking tensile specimen
The main objective of this project is to study and to determine the flow curve of necking specimen by using finite element analysis and to validate the approximation formulae of equivalent plastic stress and strain introduced by Bridgman and Davindekov-Spiridonova. This research is done for 3 tensil...
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2010
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TJ Mechanical engineering and machinery Razali, Nadlene Determination of the flow curve of necking tensile specimen |
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The main objective of this project is to study and to determine the flow curve of necking specimen by using finite element analysis and to validate the approximation formulae of equivalent plastic stress and strain introduced by Bridgman and Davindekov-Spiridonova. This research is done for 3 tensile test specimens with different types of hardening which are ideal plasticity, linear hardening and non linear hardening. In this project, the finite element method is applied for high accurate simulation of tensile tests. The obtained results are discussed in the context of approximation formula and previously known results. Different numbers of element have been carried out in order to study the influence of meshing on the results. From the study, it was found that larger number of elements give stable results, thus, larger number of elements are been choose for simulation. Computer simulation has been done to verify the assumption of the approximation formula and to recognize the possible error. From the results interpretation, it was stated that the error connected with application of the simple formula can be estimated as 10 % in comparison with the numerical simulations, which was considered as the reference solution. The results shows that, the Davidenkov Spiridonova approximation formula give better compared to the Bridgman formula. |
| format |
Thesis |
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Master's degree |
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Razali, Nadlene |
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Razali, Nadlene |
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Razali, Nadlene |
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Determination of the flow curve of necking tensile specimen |
| title_short |
Determination of the flow curve of necking tensile specimen |
| title_full |
Determination of the flow curve of necking tensile specimen |
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Determination of the flow curve of necking tensile specimen |
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Determination of the flow curve of necking tensile specimen |
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determination of the flow curve of necking tensile specimen |
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Universiti Teknologi Malaysia, Faculty of Mechanical Engineering |
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Faculty of Mechanical Engineering |
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2010 |
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http://eprints.utm.my/id/eprint/11104/1/NadleneRazaliMFKM2010.pdf |
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my-utm-ep.111042018-05-30T02:32:52Z Determination of the flow curve of necking tensile specimen 2010-05 Razali, Nadlene TJ Mechanical engineering and machinery The main objective of this project is to study and to determine the flow curve of necking specimen by using finite element analysis and to validate the approximation formulae of equivalent plastic stress and strain introduced by Bridgman and Davindekov-Spiridonova. This research is done for 3 tensile test specimens with different types of hardening which are ideal plasticity, linear hardening and non linear hardening. In this project, the finite element method is applied for high accurate simulation of tensile tests. The obtained results are discussed in the context of approximation formula and previously known results. Different numbers of element have been carried out in order to study the influence of meshing on the results. From the study, it was found that larger number of elements give stable results, thus, larger number of elements are been choose for simulation. Computer simulation has been done to verify the assumption of the approximation formula and to recognize the possible error. From the results interpretation, it was stated that the error connected with application of the simple formula can be estimated as 10 % in comparison with the numerical simulations, which was considered as the reference solution. The results shows that, the Davidenkov Spiridonova approximation formula give better compared to the Bridgman formula. 2010-05 Thesis http://eprints.utm.my/id/eprint/11104/ http://eprints.utm.my/id/eprint/11104/1/NadleneRazaliMFKM2010.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering 1. C.F. Niordson, P. Redanz. (2004). Journal of the Mechanics and Physics of Solids vol 52 2. K. Komori. (2002) Journal of Materials Processing Technology pg:125–126 , 608– 612. 3. K. Ikeda, S. Okazawa, K. Terada, H. Noguchi, T. Usami. (2001). International Journal of Engineering Science vol:39 pg:1913–1934 4. C.Y. Tang, J.P. Fan, T.C. Lee. (2003). Journal of Materials Processing Technology vol:139 pg:510– 513. 5. E.E. Cabezas, D.J. Celentano. (2004). “Finite Elements in Analysis and Design.” vol:40 pg:555–575. 6. S.W. Lee, M.S. Joun. (2000). Journal of Materials Processing Technology vol:104 pg:207–214. 7. H.S. Kim, S.H. Kim, W.S. Ryu. (2004). Journal of Korea Institute of Metals and Materials vol:42 pg:662–666 8. M. Gromada, G. Menhuris,A. Oechsner. (2007). “Necking in The Tensile Test Correction Formulae and Related Error Estimation.” Journal of Metallurgy and Materials, Issue:2 : vol:52 9. P. Bridgman. (1952). “Studies in Large Plastics and Fracture.” London : McGraw- Hill Book Company 10. N.N Davidenkov, N.I Spiridonova. (1947). “Mechanical Methods of testing Analysis of the State of Stress in the Neck of a Tension Test Specimen.” Proc Am. Soc.Test Material vol:46 pg:1147-1158 11. M.Gromada G.Mishuris,A.Oechsner. (2007). “Critical Analysis of the Evaluation of Plastic Material Properties Obtained from Standard Round Tensile Specimen.” Portugal 12. A.Oechsner J.Gegner,W.Winter,G.Khun. (2000). “Experimental and Numerical Investigations of Ductile Damage in Aluminium Alloys.” Elsevier Science. Germany 13. W. D. Callister. (2002) “Materials Science and Engineering an Introduction.” 6th. New York, USA: John Wiley & Sons 14. J. E. Shigley and C. R. Mischke. (2004). “Mechanical Engineering Design.” Michigan,USA: Mc Graw-Hill. 15. A.M. John. (1981). “Strength of Materials.” New York, USA: John Wiley. 16. H. Jahed, S.B. Lambert and R.N. Dubey. (1998). “Total deformation theory for nonproportional loading.” International Journal of Pressure Vessels and Piping. vol:75 pg:633–642 17. G. Z. Voyiadjis and P. I. Kattan. (2005) “Damage Mechanics.” Boca Raton, Florida, USA: CRC Press, Taylor & Francis Group. 18. N.E.Dowling. (2000) .”Mechanical Behavior of Materials.” United States of America : Prentice Hall 19. S. Pullarcot. (2002). “Practical Guide to Pressure Vessel Manufacturing.” Madison Avenue, New York, USA 20. D. R. J. Owen and E. Hinton. (1986). “Finite Elements in Plasticity, theory and Practice.” Mumbles, Swansea, UK: Prineridge Press. 21. T. R. Chandrupatla and A. D. Belegundu. (1998). “Introduction to Finite Elements in Engineering.” Pennsylvania, USA: University Park. 22. A.Chaaban, and N. Barake. (1993). “Elasto-Plastic Analysis of High Pressure Vessels with Radial Cross-Bores.” Journal of Pressure Vessel Technology. vol:263 pg:67–123. 23. MSC Marc manual 24. www.curvature.wikipedia.com (24 March 2010) 25. A.J. Kinloch and R.J. Young. (1995). “Fracture Behaviour of Polymers.” Chapman & Hall |