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  • 1
    Electronic Resource
    Electronic Resource
    The flow of a model suspension fluid past a sphere (1991)
    Springer
    Journal of statistical physics 62 (1991), S. 1173-1195 
    Details
    ISSN: 1572-9613
    Keywords: Falling ball ; suspension of fibers ; boundary element method ; Ericksen method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The paper is concerned with the flow of a dilute suspension of monosized spheroids past a sphere placed at the centerline of a cylindrical tube. The suspension is modeled by the transversely isotropic fluid model and the numerical solution is obtained by a time-dependent boundary element method. No steady-state solution to the problem was found. However, the amplitude of the long-time oscillations in the drag force on the sphere is only about 1% of its mean value at a solid volume concentration of 0.01 and an aspect ratio of 10 for the spheroids. The initial orientation of the microstructure has a small effect on the drag force: it can give rise to a ±1 % variation in the drag force at large time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01128182
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Rubber-like elasticity by boundary element method: Finite deformation of a circular elastic slice (1988)
    Springer
    Rheologica acta 27 (1988), S. 230-240 
    Details
    ISSN: 1435-1528
    Keywords: Finiteelasticity ; squeezing deformation ; Boundary Element method ; rubber-likematerial
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Abstract We briefly review the phenomenological theory of rubber-like elasticity and report a microstructural model that leads us to eventually adopt a particular constitutive equation, which includes the Neo-Hookean and the Mooney materials. A numerical implementation of the Boundary Element method for solving a general two-dimensional or axisymmetric finite deformation problem is described and tested with some simple deformations. The resulting program is used to analyse the finite deformation of a circular elastic slice perfectly bonded to two parallel rigid end plates; the bottom plate is stationary and the top plate is given a constant displacement. The problem has a free surface which must be found as part of the solution. The results indicate that the Boundary Element method can be an efficient tool for stress-strain analyses with rubber-like materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01329739
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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