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

• Published in: Journal of marine science and engineering Vol. 12; no. 7; p. 1184
• Main Authors: Lin, Yi, Cheng, Ruiqi, Chen, Lizhi, Kong, Xiangshao, Pei, Zhiyong
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.07.2024
• Subjects: Bend strength; Bend tests; Bending moments; Collapse; collapse test; Deformation; Design; Dimensional analysis; Distortion; distortion similarity theory; Finite element method; Icebreakers; Inertia; Mechanical properties; nonlinear similarity method; Nuclear energy; Nuclear reactors; reactor hull structure; Reactors; Scale models; Ship hulls; Similarity theory; Theories; ultimate strength; Ultimate tensile strength; Arctic region; China
• ISSN: 2077-1312; 2077-1312
• DOI: 10.3390/jmse12071184

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.