Analytical theory for fatigue crack propagation rates of mixed-mode I–II cracks and its application
Source abstract
Abstract
Abstract The Manson–Coffin law for the low-cycle fatigue (LCF) of a representative volume element (RVE) and fatigue crack propagation (FCP) rate of cracked components can characterize material fatigue resistance. This paper proposes an LCF–FCP model for predicting the FCP rate of plane-stress mixed-mode I–II cracks. A semi-analytical model is also proposed for the Je integral of mixed-mode I–II compact tension shear (CTS) specimens based on energy equivalence method. The combination of these two models predicted the FCP rates of CTS specimens made from 30Cr2Ni4MoV rotor steel with mixed-mode I–II cracks and subjected to four different loading angles. The theoretical results were consistent with the experimental results.
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Research context
OpenAlex topics: Fatigue and fracture mechanics · Structural Load-Bearing Analysis · Fire effects on concrete materials
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