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In this chapter, we explore the critical role of the process zone at the crack tip, which serves as an additional velocity-dependent channel for energy dissipation during fracture events. Incorporated into the fracture energy, denoted as \(\varGamma =\varGamma (V)\) , this zone contribution grants the fracture energy a negative slope, represented mathematically as \(d\varGamma (V)/dV<0\) fostering a positive feedback mechanism. When combined with the crack’s inertial properties manifesting within the wedging process, this phenomenon precipitates self-oscillations. This exploration aims to shed new light on the intricate dynamics at play during material fracturing, potentially unveiling innovative approaches to understanding and manipulating fracture mechanics (Boulbitch and Korzhenevskii 2011).

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Wedging-Induced Stick–Slip Crack Propagation

  • 章节

  • 发表日期：

    2026年

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  • Alexei Boulbitch,
  • Alexander Korzhenevskii

摘要

In this chapter, we explore the critical role of the process zone at the crack tip, which serves as an additional velocity-dependent channel for energy dissipation during fracture events. Incorporated into the fracture energy, denoted as \(\varGamma =\varGamma (V)\) , this zone contribution grants the fracture energy a negative slope, represented mathematically as \(d\varGamma (V)/dV<0\) fostering a positive feedback mechanism. When combined with the crack’s inertial properties manifesting within the wedging process, this phenomenon precipitates self-oscillations. This exploration aims to shed new light on the intricate dynamics at play during material fracturing, potentially unveiling innovative approaches to understanding and manipulating fracture mechanics (Boulbitch and Korzhenevskii 2011).