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finite element method

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040091
EISBN: 978-1-62708-300-3
...Abstract Abstract There are numerous approximate methods, both analytical and numerical, for analyzing forging processes. None are perfect because of the assumptions made to simplify the mathematical approach, but all have merit. This chapter discusses the slab, upperbound, and finite element...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540001
EISBN: 978-1-62708-309-6
.... It then goes on to analyze the stress state of load-bearing members, pressurized tubes, and pin-loaded lugs, accounting for the effect of geometric discontinuities, such as cutouts, fillets, and holes, as well as cracks. It also explains how finite element methods are used to solve problems involving complex...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040237
EISBN: 978-1-62708-300-3
...Abstract Abstract This chapter discusses the use of finite-element methods for modeling cold forging processes. The discussion covers process modeling inputs, such as geometric parameters, material properties, and interface conditions, and includes several application examples. cold...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400105
EISBN: 978-1-62708-316-4
... the effect of key process parameters including the draw ratio, material properties, geometry, interface conditions, equipment operating speed, and tooling. It then walks through the steps involved in predicting stress, strain, and punch force using the slab method and finite element analysis and presents...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500179
EISBN: 978-1-62708-317-1
... Hydroforming: State-of-the-Art and Future Trends , J. Mater. Process. Technol. , Vol 98 ( No. 1 ), Jan 15 , 2000 , p 25 – 33 10.1016/S0924-0136(99)00302-7 9.3 Jirathearanat S. , “Advanced Methods for Finite Element Simulations for Part and Process Design in Tube Hydroforming,” Ph.D...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500157
EISBN: 978-1-62708-317-1
... Finite Element Method,” Master’s thesis, The Ohio State University, Columbus, OH, 2005 8.25 Groche P. , Huber R. , Dorr J. , and Schmoeckel D. , Hydromechanical Deep Drawing of Aluminum Alloys at Elevated Temperatures , CIRP Ann. , Vol 51 ( No. 1 ), 2002 , p 215 – 218...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500073
EISBN: 978-1-62708-317-1
... to optimize the number of forming stages in a multistep deep drawing problem. Kim et al. ( Ref 4.8 ) carried out tool design analysis for multistep drawing using the finite-element method (FEM). In these studies, only design improvements in existing multistep tooling were carried out. Case Study I...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500051
EISBN: 978-1-62708-317-1
.... finite element method forming tools process simulation sheet metal forming springback UNTIL RECENTLY, the design of metal forming tools was based mainly on knowledge gained through experience and expensive trial-and-error processes. However, today the metal forming industry is making use...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500133
EISBN: 978-1-62708-317-1
...Abstract Abstract Hot stamping is a forming process for ultrahigh-strength steels (UHSS) that maximizes formability while minimizing springback. This chapter covers several aspects of hot stamping, including the methods used, the effect of process variables, and the role of finite-element...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500289
EISBN: 978-1-62708-317-1
... and costly trial-and-error experiments. However, some studies ( Ref 14.20 , 14.21 ) discuss the application of the finite-element method to optimize the mechanical crimping process, to enhance the performance of the assembly by determining the optimum process and geometrical parameters. The crimp...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500273
EISBN: 978-1-62708-317-1
...-and-error. A suitable process model is needed to estimate whether a part is feasible with ISF and to identify suitable forming strategies. In principle, the finite-element method is well established in sheet metal forming to analyze and optimize, for example, stamping processes. However, the following...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040059
EISBN: 978-1-62708-300-3
... heat transfer between objects be characterized. Thus, the numerical analysis, such as finite element method, can carry out quantitative calculations at the interface between the objects that are in contact. The interface heat transfer coefficient, h, for hot forging application, is measured...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540215
EISBN: 978-1-62708-309-6
... their widths with stress profiles. It also describes how material-related factors, load history, corrosion, and temperature affect crack growth rates, and discusses the steps involved in life assessment. corrosion-fatigue damage tolerance analysis finite element method residual strength stress...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460067
EISBN: 978-1-62708-285-3
... is summarized as follows. Finite-Element Method Mesh-Free Methods Analytical and Semiempirical Models Main Outcome Particle Deformation and Interfacial Phenomena Prediction of Critical Velocity Brittle Materials Particle impact can result in erosion, bonding, or rebound, depending...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040185
EISBN: 978-1-62708-300-3
... for thinner forgings and stronger alloys. The forging load and die stresses may be calculated using finite-element analysis that requires a rather sophisticated software package, elaborate input data preparation, and considerable computer time. Therefore, it is often desirable to use a simple method...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040067
EISBN: 978-1-62708-300-3
..., these values are most often predicted by the finite element method (FEM). Figure 7.12 shows an example of an FEM model used for this purpose. The results are plotted in the form of “theoretical calibration curves,” as can be seen in Fig. 7.13 . In determining the value of the shear factor, m, for a given...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540281
EISBN: 978-1-62708-309-6
... could have been a J with large-scale yielding, or just an elastic- J . The latter is actually a value of K 2 divided by E , or by E /(1 − ν 2 ), depending on the crack-tip constraint (i.e., plane stress or plane strain). The finite element method can be used to determine the stress...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040193
EISBN: 978-1-62708-300-3
..., ” CIRP Annals , Vol. 381 , p 243 . 10.1016/S0007-8506(07)62695-X [Knoerr et al., 1992] Knoerr M. , Lee J. , Altan T. , “ Application of the 2D Finite Element Method to Simulation of Various Forming Processes, ” Journal of Materials Processing Technology , Vol. 33 , 1992 , p 31...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040051
EISBN: 978-1-62708-300-3
.... , Metal Forming and the Finite Element Method , Oxford University Press , 1989 . [Lange, 1972] Lange K. , Ed., Study Book of Forming Technology , (in German), Vol 1 , Fundamentals , Springer-Verlag , 1972 . [Thomsen et al., 1965] Thomsen E.G. , Yang C.T. , and Kobayashi...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500019
EISBN: 978-1-62708-317-1
... of the sheet is usually assumed to be known and constant over the bending area, but in practice, it varies over the bend, and the sheet may not have full contact with the tool. The finite-element method can give results that are much more accurate if used carefully in cases in which sheet, tool geometry...