STP711

    A Dynamic Viscoelastic Analysis of Crack Propagation and Crack Arrest in a Double Cantilever Beam Test Specimen

    Published: Jan 1980


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    Abstract

    Studies of dynamic crack propagation and arrest in polymeric materials are generally interpreted using rate-independent elastic analyses. To ascertain the importance of the viscoelastic constitutive behavior exhibited by polymers that is neglected in these approaches, a simple mathematical model for dynamic viscoelastic crack propagation in wedge-loaded double cantilever beam (DCB) test specimens has been developed. Computational results have been obtained for four different polymers using a three-parameter solid linear viscoelastic constitutive representation. In comparing these results with rate-independent elastic behavior, it is found that significant differences in the crack propagation/arrest process do exist. However, close correlations can nevertheless be obtained if, in displaying experimental results, proper account is taken of the viscoelastic properties.

    Keywords:

    double cantilever beam specimen, viscoelastic, crack propagation, crack arrest, dynamic viscoelasticity, Araldite B, Homalite, PMMA, Cleareast


    Author Information:

    Popelar, CH
    Professor, The Ohio State University, Columbus, Ohio

    Kanninen, MF
    Senior research scientist, Battelle Memorial Institute, Columbus Laboratories, Columbus, Ohio


    Paper ID: STP27437S

    Committee/Subcommittee: E08.03

    DOI: 10.1520/STP27437S


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