![]() Considere, Annales des ponts et chaussees, 9 (1885) 574–605. Dowling, Mechanical behavior of materials, Second Edition, Prentice Hall, USA (1999).Ī. Bridgman, Studies in large plastic flow and fracture, Harvard University Press, USA (1964). Chu, True stress-true strain curves obtained by simulating tensile test using finite element program, Transactions of KSME-A, 35 (1) (2011) 25–31.ĪBAQUS analysis user's guide, Version 2016, Dassault Systems (2016). Lee, Acquirement of true stressstrain curve using true fracture strain obtained by tensile test and FE analysis, Transactions of KSME-A, 33 (10) 1054–1064. ![]() Lee, A new method for acquiring true stress-strain curves over a large range of strains using a tensile test and finite element method, Mechanics of Materials, 40 (2008) 568–593. Ling, Uniaxial true stress-strain after necking, AMP Journal of Technology, 5 (1996) 37–48. Yan, Indentification of post-necking stress-strain curve for sheet metals by inverse method, Mechanics of Materials, 92 (2016) 107–118. Tong, Identification of post-necking strain hardening behavior of thin sheet metals from image-based surface strain data in uniaxial tension tests, International Journal of Solids and Structures, 75–76 (2015) 12–31. Kawakubo, A procedure for determining the true stress-strain curve over a large range of strains using digital image correlation and finite element analysis, Mechanics of Materials, 43 (2011) 243–253. Mirone, A new model for the elastoplastic characterization and the stress-strain determination on the necking section of a tensile specimen, International Journal of Solids and Structures, 41 (2004) 3545–3564. Song, Estimation of failure strain of EH36 high strength marine structural steel using average stress triaxiality, Marine Structures, 29 (2012) 1–21. Celentano, Experimental and numerical analysis of the tensile test using sheet specimens, Finite Elements in Analysis and Design, 40 (2004) 555–575. Mathew, Applicability of Voce equation for tensile flow and work hardening behaviour of P92 ferritic steel, International Journal of Pressure Vessels and Piping, 132–133 (2015) 1–9.Į. Yadav, Constitutive description of tensile flow behavior of cold flow-formed AFNOR 15CDV6 steel at different deformation levels, Journal of Materials Engineering and Performance, 23 (10) (2014) 3586–3599. Jayakumar, Influence of temperature on tensile stress-strain and work hardening behaviour of forged thick section 9Cr-1Mo ferritic steel, Transactions of the Indian Institute of Metals, 65 (5) (2012) 413–423.Ĭ. ![]() ![]() Denys, A generic stressstrain model for metallic materials with two-stage strain hardening behaviour, International Journal of Non-Linear Mechanics, 46 (3) (2011) 519–531.ĭ. The HL and HLC models suggested that the engineering stress-strains from the finite element analysis are consistent with the experimental results. #Engineering stress vs true stress pdf plusThe equations for each model can be determined using the results of the tensile test, which include the true stress-strain value at the maximum load point and the corrected true stress-strain value at the fracture point plus the Considere instability criterion. Five post-necking strain hardening models are considered, namely, linear, swift, Ludwick, Hollomon-linear (HL) and Hollomon-linear-constant (HLC) models. True stress-strains are difficult to determine after necking because of nonuniform deformation without specialized measurement techniques. Measured engineering stresses and strains can be reasonably converted to true stresses and strains under uniform deformation before necking. This study proposes a simple methodology for determining the true stress-strain curve of SA-508 Grade 3 Class 1 low alloy steel using limited information from a general tensile test with finite element analysis. The true stress-strain curve of a material should be determined for plastic property input to numerical analysis. ![]()
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