STP1012: Lateral Impact of Composite Cylinders

    Christoforou, AP
    University of Utah, Salt Lake City, UT

    Swanson, SR
    University of Utah, Salt Lake City, UT

    Beckwith, SW
    Hercules Aerospace Co., Magna, UT

    Pages: 14    Published: Jan 1989


    Abstract

    An analytical study was conducted to explore and understand the mechanics of the lateral low-velocity impact of composite cylinders by a heavy mass. Two simple models are presented, which when compared with the experimental data demonstrate that the fundamental features of the impact event are represented. Although the results are preliminary, a failure model based on linear laminated shell theory and linear fracture mechanics gave a reasonable representation of the observed impact damage. A nonlinear ring model gave good insight into the physics of the impact event in the presence of delaminations and the resulting nonlinear effects.

    Keywords:

    composite pressure vessels, impact damage, residual strength, delamination, IM7 carbon fiber


    Paper ID: STP10426S

    Committee/Subcommittee: D30.02

    DOI: 10.1520/STP10426S


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