Warning: fopen(/home/virtual/kwjs/journal/upload/ip_log/ip_log_2024-11.txt): failed to open stream: Permission denied in /home/virtual/lib/view_data.php on line 100 Warning: fwrite() expects parameter 1 to be resource, boolean given in /home/virtual/lib/view_data.php on line 101 Evaluation of Secondary Buckling and Ultimate Strength Behaviour According to Boundary Conditions of Curved Plate Subjected to Compressive Load

J Weld Join > Volume 42(5); 2024 > Article
Journal of Welding and Joining 2024;42(5):463-471.
DOI: https://doi.org/10.5781/JWJ.2024.42.5.3    Published online October 31, 2024.
압축 하중을 받는 곡판의 경계 조건에 따른 2차 좌굴 및 최종강도 평가
이명수1  , 고재용2, 박주신3 
1조선대학교 선박해양공학과
2목포해양대학교 조선해양공학과
3삼성중공업 조선해양연구소
 
Evaluation of Secondary Buckling and Ultimate Strength Behaviour According to Boundary Conditions of Curved Plate Subjected to Compressive Load
Myung-Su Yi1  , Jae-Yong Ko2, Joo-Shin Park3 
1Department of Navel Architecture and Ocean Engineering, Chosun University, Gwanju, 61452, Korea
2Department naval Architecture and Ocean Engineering, Mokpo National Maritime University, Mokpo, 58628, Korea
3Ship and Offshore Research Institutes, Samsung Heavy Industiries, Geoje, 53261, Korea
Correspondence:  Joo-Shin Park,
Email: scv7076@nate.com
Received: 2 July 2024   • Revised: 23 July 2024   • Accepted: 13 August 2024
Abstract
This paper analyzed the buckling and ultimate strength characteristics of plate members with curvature, which are essentially used in ships and marine structures, through numerical analysis. Major structural members are affected by rotational velocity depending on the rigidity of structures placed around them, and it is very important to check how this affects buckling and ultimate strength. The aspect ratio of the curved plate was adopted as 2.5, 3.0, and 3.5 to reflect the plate thickness range and high-strength steel characteristics actually used. In the case of no curvature, and in the case of curvature, 5 degrees, 10 degrees, 15 degrees, 20 degrees, 30 degrees, and 45 degrees were considered. Under certain thickness and curvature conditions, secondary buckling occurs and the buckling state of the plate changes rapidly. Therefore, the final strength is evaluated lower than in the case where there is no curvature. Buckling and ultimate strength were high in a clamped condition around the curved plate, and there was no specificity in behavior depending on the aspect ratio change. In the four-side simply supported condition, the in-plane stiffness gradient changes depending on the aspect ratio due to the secondary buckling effect, and this characteristic is a phenomenon that is not considered at all in the existing classification method.
Key Words: Buckling, Ultimate strength, Rotational constraint, Curved plate, Secondary buckling


ABOUT
BROWSE ARTICLES
ARTICLE CATEGORY 
FOR CONTRIBUTORS
Editorial Office
#304, San-Jeong Building, 23, Gukhoe-daero 66-gil, Yeongdeungpo-gu, Seoul 07237, Korea
Tel: +82-2-538-6511    Fax: +82-2-538-6510    E-mail: koweld@kwjs.or.kr                

Copyright © 2024 by The Korean Welding and Joining Society.

Developed in M2PI