STP617

    An Analytical Method for Evaluation of Impact Damage Energy of Laminated Composites

    Published: Jan 1977


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    Abstract

    A higher order beam finite element is developed for computing the dynamic response of laminated beams subjected to impact of a hard object. The contact force as well as the indentation are obtained by using the Hertzian contact law. By assuming a certain unloading path, the total energy imparted from the projectile to the beam and the damage energy that causes permanent indentations are computed. Laminated cantilever beams of a glass-epoxy composite impacted by a steel ball are investigated. Part of the analytical results is in good agreement with existing experimental data.

    Keywords:

    composite materials, laminates, impact, contact force, cantilever beams


    Author Information:

    Sun, CT
    Professor of Aeronautics and Astronautics, Purdue University, West Lafayette, Ind.


    Paper ID: STP26958S

    Committee/Subcommittee: D30.02

    DOI: 10.1520/STP26958S


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