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constitutive model

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060083
EISBN: 978-1-62708-343-0
... and Materials , 1973 , p 613 – 624 5.2 Bodner S. and Partom Y. , Constitutive Equations for Elastic Viscoplastic Strain Hardening Materials , J. Appl. Mech. (Trans. ASME) , Vol 42 , 1975 , p 385 – 389 10.1115/1.3423586 5.3 Robinson D.A. , “A Unified Creep-Plasticity Model...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460067
EISBN: 978-1-62708-285-3
... all models of particle impact and bonding start with the analysis of plastic deformation of particles during impact and bonding. This is often pursued through continuum-level models of deformation, which have been widely used in cold spray research. The constitutive plastic properties of the involved...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040083
EISBN: 978-1-62708-300-3
..., ERC/NSM-99-R-22. [Pietrzyk et al., 2001] Pietrzyk M. , Szyndler D. , Hodgson P.D. , “ Identification of Parameters in the Internal Variable Constitutive Model and Friction Model for Hot Forming of Steels, ” Simulation of Materials Processing: Theory, Method and Applications...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500133
EISBN: 978-1-62708-317-1
...-Johnson mechanism). The formation of the new phase (martensite in this case) occurs in a preferred orientation that influences the global shape of the material (Magee mechanism). Constitutive Model for Hot Stamping by Akerstrom A thermoelastic-plastic constitutive model based on the von Mises...
Image
Published: 01 August 2018
Fig. 16.18 Constitution diagram by Siewert, McCowan, and Olson for the estimation of the solidification mode of stainless steel castings, adapted from Ref 13 . The numbers on the lines in the regions where ferrite is present are the volumetric fraction of ferrite (FN) in the steel More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060111
EISBN: 978-1-62708-343-0
... 6.11 Saltsman J.F , personal communication, 1985 6.12 Walker K.P. , “Research and Development Program for Nonlinear Structural Modeling with Advanced Time-Temperature Dependent Constitutive Relationships,” NASA CR-165533, 1981 6.13 Robinson D.N. and Swindeman R.W...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500051
EISBN: 978-1-62708-317-1
... as plastic. The simulations were considered to be nonisothermal because local temperature increases may soften the work material and affect the shearing conditions. The Johnson-Cook constitutive model was used to represent the material data to be used in the FEM simulations. This constitutive model captures...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060173
EISBN: 978-1-62708-343-0
...., American Society for Testing and Materials , 1993 , p 35 – 49 10.1520/STP24248S 8.72 Slavik D. and Sehitoglu H. , A Constitutive Model for High Temperature Loading, Part I—Experimentally Based Forms of the Equations, Thermal Stress, Material Deformation, and Thermomechanical Fatigue...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040091
EISBN: 978-1-62708-300-3
... The visioplasticity method [ Thomsen et al., 1954 ] combines experiment and analysis. A grid is imprinted on the metal or modeling substance before deformation starts. Pictures taken at small intervals during processing enable the investigator to construct a flow pattern. After the velocity vectors have been...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060001
EISBN: 978-1-62708-343-0
... printing , 1990 1.11 Raj S.V. Iskovitz I.S. and Freed A.D. , Modeling the Role of Dislocations Substructure during Class M and Exponential Creep , Unified Constitutive Laws of Plastic Deformation , Krausz A.S. and Krausz K. , Ed., Academic Press , San Diego , 1996...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930003
EISBN: 978-1-62708-359-1
... by the concept of constitutional supercooling criterion ( Ref 6 ), which can be mathematically stated as: (Eq 1) G L / R > Δ T 0 D L   f o r   p l a n e   f r o n t   s o l i d i f i c a t i o n or (Eq 2) G L / R...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110666
EISBN: 978-1-62708-247-1
... (and objective) conclusions. DoE begins with developing objectives of an experiment and then selecting appropriate process factors (process models that include input factors and measurable output responses) for the evaluation. The actual experimental design constitutes a detailed experimental plan and should...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390019
EISBN: 978-1-62708-459-8
... to allow more complex constitutive models. Additional Considerations Many demanding applications have combinations of low or high fractional contact areas ( A f = A r /A a ) in different locations of the same die (so that Coulomb and Tresca models may be better or less suited at a given location...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040193
EISBN: 978-1-62708-300-3
... Abstract This chapter discusses the use of finite-element modeling in forging design. It describes key modeling parameters and inputs, mesh generation and computation time, and process modeling outputs such as metal flow, strain rate, loading profiles, and microstructure. It also includes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400053
EISBN: 978-1-62708-316-4
... of plastic flow is not trivial and depends on a combination of all the stresses in the stress tensor. The most popular yield criteria for isotropic material and anisotropic material used in numerical modeling of sheet metal forming processes are described in this chapter: Isotropic yield criteria...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220025
EISBN: 978-1-62708-259-4
... relevant phenomena that occur in crystalline materials can be represented or simulated in two dimensions. (The DoITPoMS Project at the University of Cambridge has excellent examples of structure modeling using bubble rafts to simulate atomic arrangements in 2D, which can be found at http...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120039
EISBN: 978-1-62708-269-3
... prototyping encourages designers to consider titanium alloy parts because component designs can be evaluated in a fraction of the time needed and at a very small fraction of the cost for producing a part using conventional wrought processing techniques. Rapid prototyping using computer-aided modeling...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390007
EISBN: 978-1-62708-459-8
... Forming Processes - Constitutive Modelling and Numerical Simulation . Springer , 2010 . 10.1007/978-3-540-88113-1 [35] Hosford W.F. and Caddell R.M. , Metal Forming - Mechanics and Metallurgy . Cambridge University Press , 2011 . 10.1017/CBO9780511976940 [36] Kalpakjian S...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060155
EISBN: 978-1-62708-343-0
... be evaluated. Equations appropriate for this purpose are based on equilibrium, compatibility, plasticity theory, and appropriate viscoplastic constitutive modeling ( Ref 7.5 , p 86). Constants in the constitutive equations are generally determined from simple biaxial stress-state tests. Therefore...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780249
EISBN: 978-1-62708-281-5
...) and the development of constitutive equations for damage evolution leading to crack initiation and propagation as a function of loading history represent a fundamental problem for scientists and engineers. Although loading conditions such as creep, stress relaxation, and continuous deformation lend considerable...