Abstract
AH-32 steel has been widely used in ship and marine structures but not been extensively studied for low-cycle fatigue (LCF) crack growth characteristics. The objective here is to explore the evolution mechanism behind LCF crack propagation behavior under different load conditions, for which the investigation of experimental and numerical simulation is considered in a detailed manner. An analytical model is presented to consider the effect accumulative plastic strain for ship cracked plate subjected to high stress cyclic loading. Different numerical parameters are proposed to quantify stress–strain field near crack-tip, and an integral model is developed to calculate the magnitude of the compressive stress. The effect of the maximum and minimum load on crack closure level is analyzed. The results show that there is an excellent correlation between LCF crack closure parameter and the magnitude of the compressive stress in the plastic wake, which indicates the presented integral model provides a new way for LCF crack propagation analysis.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
