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  • 1
    Electronic Resource
    Electronic Resource
    Thermomechanical analysis of the Taylor impact test (2002)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 91 (2002), S. 3675-3686 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A coupled thermomechanical analysis of the Taylor impact test considering flat-ended cylindrical specimens of different materials fired at several striking velocities is presented. To this end, a large strain rate-dependent thermoelasto–plasticity model is used to define the constitutive relationships appearing in the momentum and energy equations both solved in the context of the finite element method. The influence of the strain, temperature, and strain rate effects on the material response is particularly analyzed. The numerical predictions are experimentally validated and compared with results provided by previously reported simulations and simplified analytical expressions. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1435836
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  • 2
    Electronic Resource
    Electronic Resource
    Modeling fluid-solid thermomechanical interactions in casting processes (2004)
    Bradford : Emerald
    International journal of numerical methods for heat & fluid flow 14 (2004), S. 167-186 
    Details
    ISSN: 0961-5539
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: An integrated formulation for the analysis of casting processes is presented in this work. This model involves the description of the evolution and the coupled interactions of the flow, thermal and mechanical fields occurring during the liquid-solid transformation of the solidifying metal. The corresponding discretized formulation is solved in the context of a fixed-mesh finite element method. Numerical results applying this methodology in two cylindrical casting specimens are first presented to assess the influence of different phenomena occurring during the process. Moreover, these simulations are compared with available experimental data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/09615530410513791
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  • 3
    Electronic Resource
    Electronic Resource
    Modelling natural and mixed convection in obstructed channels (2003)
    Bradford : Emerald
    International journal of numerical methods for heat & fluid flow 13 (2003), S. 57-85 
    Details
    ISSN: 0961-5539
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The modelling of steady-state natural and mixed convection in obstructed channels is presented. The two-dimensional numerical analysis is carried out with a finite element thermally coupled incompressible flow formulation written in terms of the primitive variables of the problem and solved via a generalized streamline operator technique. Natural convection is studied in several vertical channel configurations for a wide range of Rayleigh numbers while mixed convection is analysed in a horizontal channel with a built-in rectangular cylinder for different Reynolds and Grashof numbers. The results obtained in this work are validated with available experiments and other existing numerical solutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/09615530310456769
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    A finite element formulation for phase-change problems with advective effects (1998)
    Chichester : Wiley-Blackwell
    Communications in Numerical Methods in Engineering 14 (1998), S. 719-730 
    Details
    ISSN: 1069-8299
    Keywords: phase-change problems ; conduction-advection equation ; upwind weight function ; Engineering ; Numerical Methods and Modeling
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: A finite element formulation for solving transient multidimensional phase-change problems considering advective effects is presented. This temperature-based formulation includes the definition of a phase-change function able to deal with classical isothermal and non-isothermal phase-change cases. Moreover, a new upwind weight function is defined in order to avoid numerical oscillations in problems with dominant advective effects. Further, some important aspects related to its numerical implementation are also addressed. The ability of this methodology is illustrated, firstly, in the solution of a one-dimensional test example. Finally, the numerical simulation of a direct-chill continuous casting process is performed. © 1998 John Wiley & Sons, Ltd.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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