Volume 23, Issue 1 (January 2001)

    Viscoelastic Modeling of Press-Fitted Composite Cylinders

    (Received 10 June 1999; accepted 24 July 2000)

    CODEN: CTROAD

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    Abstract

    Interference stress is an important design factor for press-fitted cylinder applications such as flywheels and pressure vessels, which may decrease over a period of time. Stress relaxation and creep in press-fitted composite cylinders are investigated based on anisotropic viscoelasticity. The analysis accounts for ply-by-ply variation of material properties and fiber orientations through the thickness of cylinders. Viscoelastic characteristics of press-fit composite assemblies are quite different from those of isotropic cylinders, due to the extreme anisotropy of composite materials. Results show a significant change of interference stresses over a period of time, which is critical to structural performance and durability.


    Author Information:

    Tzeng, JT
    U.S. Army Research Laboratory, Weapons and Materials Research Directorate, Aberdeen Proving Ground, MD


    Stock #: CTR10909J

    ISSN: 0884-6804

    DOI: 10.1520/CTR10909J

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    Author
    Title Viscoelastic Modeling of Press-Fitted Composite Cylinders
    Symposium , 0000-00-00
    Committee D30