Seikei-Kakou
Online ISSN : 1883-7417
Print ISSN : 0915-4027
ISSN-L : 0915-4027
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Volume 12, Issue 8
Displaying 1-20 of 20 articles from this issue
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Index
Preface
Reports on 11 th Annual Meeting of JSPP
Technical Note
Special Lecture
Reports from Universities and Institusions in Japan : 86
Topics on Products and Technologies
Technical Reports
Reports of International Meeting
Original Papers
  • Deformation Behavior of Thermoplastic Elastomer Molding (2)
    Compressive Deformation Analysis of Cylindrical Molding by Finite Element Method
    Chisato Nonomura, Kiyoshi Negishi, Katsuhisa Yamashita, Sakashi Kamata ...
    2000 Volume 12 Issue 8 Pages 516-522
    Published: August 20, 2000
    Released on J-STAGE: November 18, 2009
    DOIhttps://doi.org/10.4325/seikeikakou.12.516
    JOURNAL FREE ACCESS
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    In this report, we focused on the comparison between the results studied using the Finite Element Method (FEM) and experimental tests under static compression, with regard to cylindrical molding of thermoplastic elastomers. We attempted to analytically model with a great deal of precision in non-linear properties due to buckling and contact in the large deformation region.
    The following results were obtained;
    (1) For large deformation behavior which was accompanied by buckling of the thermoplastic elastomer molding, the validity of the modeling using the elasto-plastic constitutive law was shown.
    (2) The load-displacement behavior of different cylindrical molding shapes was reproduced by FEM.
    (3) Changes in the outer diameter of the cylindrical molding was also considered by using FEM, and the deformation behavior within the molding where observation was experimentally difficult was also analyzed.
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  • A Decoupled Finite Element Analysis of Viscoelastic Flows Using the Concept of Additive Viscosity
    Shuichi Iwata, Tsutomu Aragaki, Hideki Mori, Satoshi Ishikawa, Hikaru ...
    2000 Volume 12 Issue 8 Pages 523-529
    Published: August 20, 2000
    Released on J-STAGE: November 18, 2009
    DOIhttps://doi.org/10.4325/seikeikakou.12.523
    JOURNAL FREE ACCESS
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    A decoupled finite element method previously reported8), 9) has been revised by introducing the concept of additive viscosity, which had been proposed by Tanoue et al.12), in relation to the TME (Transformation of Momentum equation to the Elliptic equation) scheme. This method has been successfully applied to the problem of die swell flow of viscoelastic (single mode Giesekus model) fluids at high Weissenberg numbers. It is found that introduction of the additive viscosity can improve the convergence behavior remarkably and the results with and without the additive viscosity are in precise agreement with each other. The new decoupled finite element method developed here enables us to predict the die swell flow behavior successfully even at Weissenberg numbers (We) over 1000.
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