Research on Collapse Testing of Nuclear Icebreaker Reactor Hull Structure Based on Distortion Similarity Theory

• Published in: Journal of Marine Science and Engineering
• Main Authors: Yi Lin, Ruiqi Cheng, Lizhi Chen, Xiangshao Kong, Zhiyong Pei
• Format: Article in Journal/Newspaper
• Language: English
• Published: MDPI AG 2024
• Subjects: distortion similarity theory; nonlinear similarity method; reactor hull structure; ultimate strength; collapse test; Naval architecture. Shipbuilding. Marine engineering; VM1-989; Oceanography; GC1-1581; Icebreaker
• Online Access: https://doi.org/10.3390/jmse12071184; https://doaj.org/article/d4ec04d1464e4e2c8b1e537b336cfb7f

In this study, the finite element method combined with the model test method are used to investigate the ultimate strength of a target ship reactor hull structure under a pure bending load. Based on the distortion similarity theory and nonlinear similarity method, a scale model of the actual ship reactor hull structure is designed and the model collapse test is conducted. The ultimate bending moment obtained by the model test is transformed to the actual ship through the similarity transformation relationship and compared with the nonlinear finite element analysis result of the actual structure. The results are consistent with each other, which indicates that the collapse characteristics of the actual ship reactor hull structure can be better forecasted using the model test results when the test model is designed based on the nonlinear similarity method and distortion similarity theory.