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finite-element modeling

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Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006773
EISBN: 978-1-62708-295-2
... article provides a general view on the applicability of finite-element modeling in conducting analyses of failed components. It highlights the uses of finite-element modeling in the area of failure analysis and design, with emphasis on structural analysis. The discussion covers the general development and...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005431
EISBN: 978-1-62708-196-2
... solve differential equations consist of lumped-parameter methods or the so-called meshed-solution methods (such as finite-element analysis). If the problem can be simplified for the use of ordinary differential equations, then a lumped-parameter model may be used. A lumped-parameter model may help...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005424
EISBN: 978-1-62708-196-2
.... The goal of this article is to introduce the reader to finite-element simulations in which single-crystal properties provide the basis for the constitutive model, to lay out the basic equations that need to be solved, and to provide examples illustrating he types of simulations amenable to this...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004021
EISBN: 978-1-62708-185-6
... structure. Modeling the microstructural evolution of the ingot during the cogging process has been of great interest in recent years. Fig. 2 Meshes used for finite element method simulation of the cogging process In the following example ( Ref 13 ), the billet material was assumed to be nickel...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005414
EISBN: 978-1-62708-196-2
... microstructural evolution in steels. It presents an example of the integration of finite element modeling and microstructural evolution models for the simulation of metal flow and microstructural evolution in a hot rolling process. microstructural evolution models steels hot rolling finite element...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004017
EISBN: 978-1-62708-185-6
... tests, such as the tension test, ring compression test, plane-strain compression test, bend test, indentation test, and forgeability test. It concludes with information on the role of the finite-element modeling software used in workability analysis. bend test bulk forming processes cracking...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005426
EISBN: 978-1-62708-196-2
... techniques. It introduces some common techniques for discretizing the fluid-flow equations and methods for solving the discrete equations. These include finite-difference methods, finite-element methods, spectral methods, and computational particle methods. The article describes the approaches for grid...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005238
EISBN: 978-1-62708-187-0
... steel slabs solidification stress finite element formulation arbitrary Lagrangian Eulerian method braking disks thermomechanical coupling COMPUTATIONAL MODELING of mechanical behavior during solidification is becoming more . Thermal and microstructural simulations alone are insufficient to...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004028
EISBN: 978-1-62708-185-6
.... The applications of polycrystal plasticity models discussed previously correspond to simple deformation histories. This Section presents some examples of how polycrystal constitutive models are applied to the simulation of complex forming operations through the use of the finite-element method (FEM...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005418
EISBN: 978-1-62708-196-2
...-drawing of AA3104, successfully predicting the ear profiles as a function of initial texture after cold rolling subsequent to initial hot rolling ( Ref 27 ) ( Fig. 3 ). Finite-element (FE) models using simplified anisotropic behavior were used to derive the stress and strain boundary conditions. Fig...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005425
EISBN: 978-1-62708-196-2
... flow, gross defects in bulk forming Finite-element models deformation processes Strain/metal flow, strain rate, temperature in deformation processes; powder consolidation Finite-element/finite-difference models solidification processes Fluid flow, solidification in solidification processes...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005419
EISBN: 978-1-62708-196-2
... complex, multiaxial loading. In the early 2000's these model approaches were two-dimensional, but now fully three-dimensional methods are available, for example, FRANC3D ( Ref 4 ) and Zencrack ( Ref 27 ). These advanced tools can read meshes from commercial finite-element software, such as ANSYS or ABAQUS...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006271
EISBN: 978-1-62708-169-6
... immersion (arrows indicate rewetting front) Finite-element modeling simulation after a quenching duration of 1.5 s resulted in thermal gradients of the T-profile, as shown in Fig. 12 . The thinner legs cool significantly faster than the thicker leg, which additionally is caused by the earlier...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005456
EISBN: 978-1-62708-196-2
... finite-element approaches. To solve more industrially relevant problems, approximate techniques have been developed that model more geometrically complex problems with industrially acceptable boundary conditions. The most popular of these methods are the slab method (SM), the upper bound method (UBM...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005406
EISBN: 978-1-62708-196-2
... ). These models are based on averaging procedures to write conservation equations for a two-phase mixture made of solid and liquid. These equations are solved at the scale of the casting using a control volume (CV) or finite element (FE) method. The results of such models are average grain sizes, and...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005236
EISBN: 978-1-62708-187-0
... equations at the scale of the casting using a finite element method. Only one REV is represented while the number of REV is defined to fully cover the domain of the casting to be modeled. As details of the microstructure cannot be resolved at the macroscopic scale of the casting, models have been...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005411
EISBN: 978-1-62708-196-2
... laboratory testing, and it can also provide information not readily obtainable using traditional test methods. Finite-element modeling (FEM), as previously mentioned, has been used to investigate the evolution of crack-tip stress fields during creep fatigue ( Ref 8 ). Also, FEM has been shown to be an...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005420
EISBN: 978-1-62708-196-2
... models can be developed based on temperature, fluid flow, stress, and strain in the mushy zone during solidification. For example, a finite-element model of an equiaxed mushy zone of aluminum has been applied to investigate constitutive behavior and to quantify strain concentration in the liquid films...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005950
EISBN: 978-1-62708-166-5
... simulation of heat treatment processes has proved that it can be a powerful tool to reach those objectives. Mathematical models and computer codes for simulation of hardening processes have been developed in academia since the late 1970s, and commercial finite-element analysis (FEA) software has been around...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006772
EISBN: 978-1-62708-295-2
... materials failure analysts. This article focuses on the general methods and approaches from the perspective of a reconstruction analyst. It describes the elements of accident reconstruction, which have conceptual similarity with the principles for failure analysis of material incidents that are less complex...