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  • 1
    Electronic Resource
    Electronic Resource
    A “constrained-chain” network model for viscoelastic fluids (1983)
    Springer
    Rheologica acta 22 (1983), S. 354-360 
    Details
    ISSN: 1435-1528
    Keywords: Constrained-chain network ; constitutive equation ; viscoelastic fluid ; strain-dependent model ; maximum extensibility
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Abstract The “constrained-chain” theory of rubber elasticity proposed by Crossland and van der Hoff was found by them to predict quantitatively many salient features of experimental studies. The present work utilized the “constrained-chain” strain-energy function in a development parallel to that of the “rubberlike liquid” model of Lodge to arrive at a naturally strain-dependent integral constitutive equation for viscoelastic fluids. It can be considered as a particular case of theK-BKZ model with part of the memory function arising from a molecular model. The memory function contains the only nonlinear parameter of the model, the maximum extensibility of a network chain. The model gives a singularity in the stress integral when a network chain is streched to its maximum extensibility. To eliminate this singularity, an assumption has been made which reduces the number of fully extended network chains to zero. Alternative approaches are discussed briefly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01333765
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A “constrained-chain” network model for viscoelastic fluids (1983)
    Springer
    Rheologica acta 22 (1983), S. 361-373 
    Details
    ISSN: 1435-1528
    Keywords: Constrained chain ; constitutive equation ; viscoelastic fluid ; model evaluation ; finite extensibility
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Abstract A specific case of the general “constrained-chain” strain-dependent integral viscoelastic model is evaluated with steady simple shear data, stress growth and relaxation data, and steady elongational viscosity data. The model is qualitatively correct and quantitatively reasonable in its predictions and, on balance, compares favourably with strain-dependent, strain-rate-dependent, and stress-dependent models from the current literature. Specific model comparisons are made to demonstrate the effect of the “constrained-chain” or finite extensibility feature of the model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01333766
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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