Simulation of Short Fatigue Crack Propagation in a 3D Experimental Microstructure
Simulation of Short Fatigue Crack Propagation in a 3D Experimental Microstructure
复制标题
3D 实验微观结构中短疲劳裂纹扩展的模拟
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
S. Forest
中科院分区：
文献类型：
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作者：
H. Proudhon;Jia Li;W. Ludwig;A. Roos;S. Forest
采用晶体塑性有限元模型对多晶组织中的疲劳短裂纹扩展进行了三维模拟。通过衍射衬度层析术获得了包含数百个晶粒的实验显微结构。采用基于裂纹尖端塑性活动的分步疲劳短裂纹扩展模型。给出了技术细节，并根据执行这种要求苛刻的计算所需的妥协进行了讨论。裂纹传播通过几个晶粒，并描绘了一些特征的短裂纹的特点，在文献中观察到的实验。
A three dimensional simulation of short fatigue crack propagation in a polycrystalline microstructure using a crystal plasticity finite element model is carried out. The experimental microstructure which contains several hundreds grains, was obtained via diffraction contrast tomography. A step‐by‐step short fatigue crack growth model based on capturing the plastic activity at the crack tip is used. Technical details are given and discussed in light of the compromise needed to perform such demanding calculations. The crack propagates through several grains and depicts some of the characteristic short crack features observed experimentally in the literature.
影响因子：
6
作者：
Grigorescu, A. C.;Hilgendorff, P. -M.;Christ, H. -J.
通讯作者：
Christ, H. -J.