Numerical simulation of the coupling between thermal dissipation and fish-eye crack growth in very high cycle fatigue regime
Numerical simulation of the coupling between thermal dissipation and fish-eye crack growth in very high cycle fatigue regime
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DOI：
10.1111/ffe.12016
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发表时间：
2013-05-01
影响因子：
3.7
通讯作者：
Bathias, C.
中科院分区：
文献类型：
--
作者：
Nguyen, H. Q.;Gallimard, L.;Bathias, C.
在本文中，我们研究了温度场与超声波疲劳试验中的疲劳裂纹扩展在一个非常高的循环疲劳制度。我们使用一个ParisHertzberg裂纹扩展定律来计算裂纹的演化和一个完美的弹塑性本构关系来计算裂纹尖端的塑性耗散。提出了一个热机械有限元模型来估计裂纹扩展过程中的温度场的演变。数值计算结果与实验结果吻合较好。
In this paper, we study the temperature field associated with the propagation of a fatigue crack in a very high cycle fatigue regime during ultrasonic fatigue testing. We use a ParisHertzberg crack growth law to compute the evolution of the crack and a perfectly elasticplastic constitutive law to compute the plastic dissipation per cycle at the tip of the crack. A thermomechanical finite element model is proposed to estimate the evolution of the temperature field during the crack propagation. Numerical results obtained agree fairly well with experimental results.