A cohesive zone model with rate-sensitivity for fast crack propagation

作者:Valoroso Nunziante*; Debruyne Gilles; Laverne Jerome
来源:Mechanics Research Communications, 2014, 58: 82-87.
DOI:10.1016/j.mechrescom.2013.12.008

摘要

We study mode-I dynamic crack propagation using the cohesive-zone methodology. Subscale processes are represented via a form of rate-sensitivity, which translates to the macroscopic level the effects of micro-cracking. Namely, rate-sensitivity is included in the model in a way that it is directly related to the speed of the crack front that is typically measured during experiments. A representative numerical example is discussed that demonstrates the effectiveness of the proposed approach.

  • 出版日期2014-6
  • 单位中国地震局