Xiong, Z.; Zhu, C.; Yang, Y.; Lin, T.; Li, R. XFEM-Based Study of Fatigue Crack Propagation in Rocket Deflector Troughs under Coupled High-Temperature and Impact Conditions. J. Mar. Sci. Eng.2024, 12, 207.
Xiong, Z.; Zhu, C.; Yang, Y.; Lin, T.; Li, R. XFEM-Based Study of Fatigue Crack Propagation in Rocket Deflector Troughs under Coupled High-Temperature and Impact Conditions. J. Mar. Sci. Eng. 2024, 12, 207.
Xiong, Z.; Zhu, C.; Yang, Y.; Lin, T.; Li, R. XFEM-Based Study of Fatigue Crack Propagation in Rocket Deflector Troughs under Coupled High-Temperature and Impact Conditions. J. Mar. Sci. Eng.2024, 12, 207.
Xiong, Z.; Zhu, C.; Yang, Y.; Lin, T.; Li, R. XFEM-Based Study of Fatigue Crack Propagation in Rocket Deflector Troughs under Coupled High-Temperature and Impact Conditions. J. Mar. Sci. Eng. 2024, 12, 207.
Abstract
This research investigates the fatigue crack propagation on the lower surface of rocket deflector troughs of offshore rocket launch platforms. Initially, a numerical model of the offshore rocket launch platform is established using ABAQUS based on the Extended Finite Element Method (XFEM). Subsequently, two variable parameters—namely, the initial crack length and initial tilt angle—are introduced. This research systematically analyzes the impact of these parameters on fatigue crack propagation patterns in both the maximum stress and maximum deformation regions of the deflector channels under the combined conditions of high temperature and impact. Finally, the research indicates that the propagation length of surface cracks in the deflector trough exhibits a trend of initial increase followed by a subsequent decrease with the increase in the preset inclination angle. Notably, the stable propagation rate of the crack in the region of maximum deformation surpasses that observed in the region of maximum stress. Through meticulous comparative analysis, it is evident that temperature loading significantly fosters the initiation and propagation of cracks, particularly in the upper region of the deflector channel's lower surface.
Keywords
Offshore rocket deflector troughs; Fatigue crack propagation; XFEM; High temperature and impact coupling
Subject
Engineering, Marine Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
