In order to use the finite elements efficiently in the design of PTFE seals at an early stage a suitable material model is a basic requirement. To the knowledge of the authors such a material model is not yet commercially available.So a typical polytetrafluorethylen (PTFE) compound with glass fiber and other fillers has been investigated. This type of compound is extensively used for main lip rotary shaft seals.Material properties like stress-strain characteristics and relaxation under traction- and compression load were measured at various temperatures and their dependence on time was analyzed.A material model was developed to be implemented into FE-programs.Calculated and measured values of the radial load of shaft seals with varying loading over time were compared and prove the reliability of the proposed material model.


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    Title :

    Relaxation of Thermoplastic Rotary Shaft Seals


    Additional title:

    Sae Technical Papers


    Contributors:
    Hatch, F. (author) / Upper, G. (author) / Pohl, H. (author) / Sui, H. (author) / Schomburg, U. (author)

    Conference:

    International Congress & Exposition ; 1996



    Publication date :

    1996-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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