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finite element simulation

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500051
EISBN: 978-1-62708-317-1
... parameters for the finite-element simulation of stamping with progressive dies Sheet material AKDQ-1006, thickness = 0.5 mm (0.020 in.) Flow stress (material 1008) Obtained from viscous pressure bulge test Anisotropy constants r 0 = 1.92, r 45 = 1.83, r 90 = 2.14 Force on draw pad, kN (lb...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040237
EISBN: 978-1-62708-300-3
... effectiveness of this method is now widely recognized. Finite-element methods for simulations of metal forming processes are classified into those for the elastic-plastic and rigid-plastic analyses. In the elastic-plastic simulation, material is modeled as deforming elastic-plastically. Thus, the results...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040193
EISBN: 978-1-62708-300-3
... variety of application examples. closed-die forging finite-element analysis impression-die forging microstructure process modeling Development of finite-element (FE) process simulation in forging started in the late 1970s. At that time, automatic remeshing was not...
Book Chapter

By Soumya Subramonian
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500001
EISBN: 978-1-62708-317-1
..., including punch and die geometry, stagger, clearance, and wear as well as punch velocities, misalignment, and snap-thru forces. It also discusses ultra-high-speed blanking, fine blanking, and shearing, and the use finite-element simulations to predict part edge quality...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040083
EISBN: 978-1-62708-300-3
... Abstract This chapter discusses the role of inverse analysis in providing input data for finite element simulations of metal forming processes. It describes the basic procedures for determining flow stress and friction by inverse analysis and for comparing experimental measurements with...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460067
EISBN: 978-1-62708-285-3
... discussed subsequently. The majority of modeling techniques used for the analysis of particle impact in cold spraying have been based on continuum mechanics and, in particular, have involved mesh-based methods of numerical simulation. The focus has been on finite-element simulation of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500073
EISBN: 978-1-62708-317-1
... Table 4.1 Simulation matrix for determining the optimum punch diameter Case No. Diameter Corner radii Blank holder force Max. wall thinning from finite-element modeling, % Punch ( d p ) Die ( d d ) Punch ( r p ) Die ( r d ) mm in. mm in. mm in. mm in. kN kip...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400105
EISBN: 978-1-62708-316-4
... use a COF that is a function of interface pressure or interface conditions. For practical application of finite element (FE) simulation in general, the following steps are carried out: A geometric model is created, either in a CAD program, such as IDEAS, Pro-E, or Unigraphics, or in the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500157
EISBN: 978-1-62708-317-1
... Table 8.1 Data required as input to finite-element modeling for accurate process simulation of the warm sheet hydroforming process Mechanical data (for sheet) Thermal data (for sheet, forming medium, and hard tools) Process data Young’s modulus True stress-strain data (function of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500133
EISBN: 978-1-62708-317-1
...) ( Ref 7.19 ). Parameter 5c, transformation plasticity, is an irreversible deformation that occurs when a material undergoes phase transformation under applied stress well below the yield strength of the material. Parameter 5d is not considered in the finite-element simulation. The type of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500179
EISBN: 978-1-62708-317-1
... of bend. For a complex bending operation, the finite-element method will provide a more accurate thickness distribution. Figure 9.14 shows the thickness distribution on the middle cross section of a 90° bend. The comparison between finite-element simulation results and analytical calculations shows...
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 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 methods...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040295
EISBN: 978-1-62708-300-3
...-element modeling is used to predict die failure and extend die life. cold forging fatigue fracture finite-element modeling hot forging wear In forging, die failure can be a significant portion of the overall production cost. The dies that fail must be either repaired...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540001
EISBN: 978-1-62708-309-6
... to study crack propagation behavior under various biaxial stress conditions, with different biaxial stress ratios ( Ref 1.11 ). A finite element model simulating the actual (uncracked) specimen configuration has been constructed for determining the stresses σ x and σ y in the center of the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260029
EISBN: 978-1-62708-336-2
..., efficient, and simple method of realizing the advantages of isothermal extrusion. Venas et al. ( Ref 33 ) developed a simulation procedure for the extrusion process by means of finite element modeling (FEM). The model includes the container, die, billet, and ram variables. Using this model, the effect...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500273
EISBN: 978-1-62708-317-1
... in sheet metal forming to analyze and optimize, for example, stamping processes. However, the following difficulties exist with regard to the finite-element process simulation of incremental sheet metal forming processes ( Ref 13.2 ): Incremental sheet forming includes the following process...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500083
EISBN: 978-1-62708-317-1
... those coefficients, an experimental case was selected to simulate the warm forming of an aluminum 5754-O sheet alloy. Experimentally measured thickness distributions and punch loads were compared with the predicted values by using finite-element analysis code DEFORM-2D. Table 5.5 provides related tool...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400089
EISBN: 978-1-62708-316-4
... determined), and µ 1 and µ 2 are the COF between the sheet and blank holder/die (= 0, since there is a clearance between the sheet and die/blank holder). Except µ 3 , all the values can be determined from experiment and using finite element analysis software External cup diameter at maximum drawing force...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610549
EISBN: 978-1-62708-303-4
... connected to a monitoring device either directly with wires or indirectly by radio signals for monitoring moving or rotating parts. In this way, the actual dynamic stresses can be determined. For products with very complex shapes and high thermal gradients, a finite-element analysis (FEA) may be required to...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110563
EISBN: 978-1-62708-247-1
... failure occurs. One study used Raman spectroscopy to measure directly the strain in the silicon and corroborated it with finite element calculations to predict the location of fracture [24] . Figure 17 shows a test specimen used to characterize the fatigue life of polysilicon. The notch...