Prediction of fatigue crack growth retardation using a cyclic cohesive zone model
作者: Huan LiChun LiHuang Yuan
作者单位: 1Northwestern Polytechnical University
2Tsinghua University
刊名: Archive of Applied Mechanics, 2017, Vol.87 (6), pp.1061-1075
来源数据库: Springer Nature Journal
DOI: 10.1007/s00419-017-1232-2
关键词: Irreversible cohesive lawCrack growth retardationOverloadFatigue damageCyclic plasticity
原始语种摘要: Cohesive zone modeling of fatigue crack growth retardation in aerospace titanium alloy Ti–6Al–4V subjected to a single overload during constant amplitude is presented in this work. The cyclic softening behavior of the bulk material is simulated according to the Ohno–Wang’s cyclic plasticity theory. The fracture process zone is represented by an irreversible cohesive law which governs the material separation of fatigue crack. The material degradation mechanism is described by the gradual reduction of the unloading cohesive stiffness after each loading cycle. The fatigue crack growth behaviors are examined using the proposed cohesive model under both constant and variable amplitude loadings. The computational results are verified according to the experimental data, which confirm that the...
全文获取路径: Springer Nature  (合作)
影响因子:1.035 (2012)

  • cohesive 粘着的
  • retardation 减速
  • crack 裂隙
  • growth 生长
  • cyclic 循环的
  • fatigue 疲劳
  • softening 软化
  • material 充填料
  • fracture 断口
  • according 按照