<abstract xmlns="http://www.w3.org/1999/xhtml"><p> In order to ensure the safety and reliability of the horizontal brace of semi-submersible platform (SEMI) which functions as the supporting structure in SEMI, this article presents an elastic-plastic method to analyze the variations of the crack tip opening displacement, elastic zone and plastic zone of the cracked section of the horizontal brace under beam wave. The brace of the SEMI was assumed to be located a circumferential through crack at its boundary in this article. In addition, the cracked section of the brace has been divided into crack zone, tensile plastic zone, elastic zone and compressive plastic zone in the presented theoretical model. Moreover, the closed form of the solution has been found in this article which is especially suitable solving complicated problems in practical engineering application. Also, a typical new-generation SEMI that is in practical use was selected to analyze the variation tendency of the cracked brace’s parameters using the proposed model which could give good suggestion to semi-submersible platform designers and managers.</p></abstract>

In order to ensure the safety and reliability of the horizontal brace of semi-submersible platform (SEMI) which functions as the supporting structure in SEMI, this article presents an elastic-plastic method to analyze the variations of the crack tip opening displacement, elastic zone and plastic zone of the cracked section of the horizontal brace under beam wave. The brace of the SEMI was assumed to be located a circumferential through crack at its boundary in this article. In addition, the cracked section of the brace has been divided into crack zone, tensile plastic zone, elastic zone and compressive plastic zone in the presented theoretical model. Moreover, the closed form of the solution has been found in this article which is especially suitable solving complicated problems in practical engineering application. Also, a typical new-generation SEMI that is in practical use was selected to analyze the variation tendency of the cracked brace’s parameters using the proposed model which could give good suggestion to semi-submersible platform designers and managers.

Elastic-Plastic Analysis for Circumferential through Crack at Boundary of Semi’S Brace under Beam Wave

Polish Maritime Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

In order to ensure the safety and reliability of the horizontal brace of semi-submersible platform (SEMI) which functions as the supporting structure in SEMI,...

Elastic-Plastic Analysis for Circumferential through Crack at Boundary of Semi’S Brace under Beam Wave

Published Online: Jan 18, 2019

Page range: 106 - 113

DOI: https://doi.org/10.2478/pomr-2018-0137

Keywords
theoretical model, crack damaged brace, semi-submersible platform, beam wave

© 2019 Fei Wang, et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Elastic-Plastic Analysis for Circumferential through Crack at Boundary of Semi’S Brace under Beam Wave

Published Online: Jan 18, 2019

Page range: 106 - 113

DOI: https://doi.org/10.2478/pomr-2018-0137

Keywordstheoretical model, crack damaged brace, semi-submersible platform, beam wave

© 2019 Fei Wang, et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
theoretical model, crack damaged brace, semi-submersible platform, beam wave