Experiments and Interpretations of some Load Interaction Phenomena in Fatigue Crack Growth Related to Compressive Loading
Experiments and Interpretations of some Load Interaction Phenomena in Fatigue Crack Growth Related to Compressive Loading
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DOI：
10.4028/www.scientific.net/amr.891-892.1353
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发表时间：
2014-03
期刊：
影响因子：
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通讯作者：
C. Benz;M. Sander
中科院分区：
文献类型：
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作者：
C. Benz;M. Sander
本文讨论了压缩载荷对疲劳裂纹扩展的两个影响问题。第一个问题是压缩时的裂纹尖端载荷。结果表明，Kmax和R不适用于考虑裂纹尖端的压缩载荷条件。第二个问题是研究拉压加载中的一些基本载荷相互作用效应。特别是对已报道的导致疲劳裂纹加速扩展的载荷条件进行了重新讨论。实验的数值模拟被用来解释结果。
The present paper addresses two issues regarding the influence of compressive loadings for fatigue crack growth. The first issue is the crack tip loading in compression. It will be verified that Kmaxand R are not suitable to account for compressive loading conditions at the crack tip. The second issue is the investigation of some basic load interaction effects in tension-compression loading. Especially loading conditions that were reported leading to an acceleration of fatigue crack growth were revisited. Numerical simulations of the experiments are used to interpret the results.