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Keywords: hardening
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Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. December 2012, 134(6): 061214.
Published Online: November 21, 2012
... and general trends for the causes of the distributions are established. The solutions are obtained using several different constitutive models including kinematic hardening, isotropic hardening, and mixed hardening model. Necessary fabrication procedures such as weld repair, overlay, and postweld heat...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. December 2011, 133(6): 061207.
Published Online: October 20, 2011
..., supported by elastoplastic finite element analyses, is used. Several variable amplitude loadings were selected and analyzed, using alternative configurations of kinematic hardening plasticity models (e.g., Chaboche’s model with distinct constants superposition). The predictions are assessed using available...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. June 2011, 133(3): 031207.
Published Online: April 6, 2011
... are assigned, namely, an elastic perfectly plastic (EPP) material and an idealized elastic-linear strain hardening material obeying Ziegler’s linear kinematic hardening (KH) rule. This type of material model is termed in the current study as the KH-material. The pipe bends are subjected to a spectrum of steady...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. April 2011, 133(2): 021402.
Published Online: February 10, 2011
... very well. Tightness hardening is the result of the saturation of the gasket combined porosity parameters or the equivalent thickness of the void layer. Masi , V. , Bouzid , A. , and Derenne , M. , 1998 , “ Correlation Between Gases and Mass Leak Rate of Gasketing Materials...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. April 2009, 131(2): 021405.
Published Online: December 30, 2008
...Kwang S. Kim; Rong Jiao; Xu Chen; Masao Sakane Multiaxial ratcheting is often simulated by use of nonlinear kinematic hardening models, while in reality materials show cyclic hardening/softening and additional hardening under nonproportional loading. The effect of isotropic hardening on ratcheting...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. November 2007, 129(4): 644–652.
Published Online: February 22, 2007
...Xian-Kui Zhu; Brian N. Leis To accurately characterize plastic yield behavior of metals in multiaxial stress states, a new yield theory, i.e., the average shear stress yield (ASSY) theory, is proposed in reference to the classical Tresca and von Mises yield theories for isotropic hardening...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. February 2007, 129(1): 155–161.
Published Online: May 10, 2006
... standard EN 10088-1 Stainless steels. The results show that FEA with von Mises yield criterion and isotropic hardening describe the material behaviour with a good agreement compared to tests and that 5% principal strain limit is too low and 12% is more appropriate. Comparison between experimental...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. November 2005, 127(4): 449–456.
Published Online: June 1, 2005
... that control the plastic collapse failure behavior of unequal wall transition joints. Based on these first-order parameters, an analytic solution is formulated to predict burst pressure at plastic collapse as a function of the pipe geometry, material tensile and hardening properties for both end-opened and end...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Pressure Vessel Technol. August 2003, 125(3): 321–325.
Published Online: August 1, 2003
... the results with ideal models such as isotropic hardening and bilinear models. There is at least 30% over estimation of compressive residual stress at the bore if ideal models are used. Also, the process of material removal is simulated by using commercial FEM software to evaluate the recommended scenarios...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Pressure Vessel Technol. August 2003, 125(3): 253–259.
Published Online: August 1, 2003
... of the flow formed tube. It could be concluded from this study that clean steel (electro slag refined) processed through hardening and tempering route with a maximum percentage reduction in thickness of 88 or less can give consistently very high strength of the order of 1250–1300 MPa for AISI 4130 steel...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Pressure Vessel Technol. February 2003, 125(1): 19–25.
Published Online: January 31, 2003
...A. N. Shuaib; N. Merah; M. K. Khraisheh; I. M. Allam; S. S. Al-Anizi An experimental study has been conducted to evaluate the effect of roller expansion of heat exchanger tubes in enlarged tubesheet holes on joint strength, tube wall reduction (i.e., thinning), and strain hardening of the tubes...