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  • 1
    Electronic Resource
    Electronic Resource
    Consideration of processes on the microscale of metallic materials for the development of constitutive models (1997)
    Springer
    Acta mechanica 120 (1997), S. 1-30 
    Details
    ISSN: 1619-6937
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Processes on the microscale determine the macroscopic behaviour of metallic materials and should therefore be considered during the development of constitutive macroscopic equations used for engineering calculations. The article reviews the mathematical formulation of the most significant of these processes, such as dislocation motion due to thermal and mechanical activation and the development of internal structures during plastic deformation. It describes the consideration of these relations in a stochastic model for the inelastic behaviour of metals and shows the comparison between predictions of this model and experimental findings.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01174313
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Simulation of self-organised dislocation structures in f.c.c. and b.c.c. single crystals (1999)
    Springer
    Acta mechanica 132 (1999), S. 93-112 
    Details
    ISSN: 1619-6937
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary A computer simulation model based on the principle of cellular automata and molecular dynamics is developed for the problem of dislocation structure formation. The presented simulations show the influence of the used material data for f.c.c. and b.c.c. crystals, the cut-off radius used for simulation, the load conditions (tensile, relaxation and cyclic deformation), and the load direction in the glide plane. Also, an approach is presented which is based on non-linear non-equilibrium thermodynamics and self organisation theory. This dissipative approach enables us to state qualitatively and quantitatively the conditions which lead to dislocation structures. The ‘Bauschinger-effect’ is simulated on a microscopic level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01186962
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    Paper (German National Licenses)
    Fulltext
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