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Pulse shape effects on the dynamic stress intensity factor

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Abstract

The interaction of a transient stress pulse with a penny-shaped crack embedded in an infinite elastic solid is investigated. The front of the incident stress pulse is assumed to be planar and parallel to the crack surfaces. A time-domain boundary integral equation method is applied for computing the time history of the crack opening displacement, from which the time dependence of the dynamic stress intensity factor is subsequently calculated. Numerical calculations are carried out for several stress pulses of different shape and time dependence, to explore the effects of the shape, duration, rise and descent time of a transient stress pulse, or the period and the mean stress of a cyclic stress pulse on the dynamic stress intensity factor. Implications regarding crack surface penetrations or crack surface interactions caused by certain stress pulses are also discussed.

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Author notes

  1. Ch. Zhang

    Present address: Department of Engineering Mechanics, Tongji University, 200092, Shanghai, People's Republic of China

Authors and Affiliations

  1. Institute of Mechanics, TH Darmstadt, 6100, Darmstadt, Germany

    Ch. Zhang & D. Gross

Authors
  1. Ch. Zhang
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  2. D. Gross
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Zhang, C., Gross, D. Pulse shape effects on the dynamic stress intensity factor. Int J Fract 58, 55–75 (1992). https://doi.org/10.1007/BF00019751

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  • DOI: https://doi.org/10.1007/BF00019751

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