摘要
加筋板是船体结构的主要组成部分,针对船用加筋板试件在疲劳试验过程中连接段先于考核段破坏的技术问题,文章开展了加筋板拉伸疲劳试验技术研究,提出了加筋板拉伸疲劳试件设计方法。在此基础上,依据疲劳累积损伤理论,结合声发射动态裂纹检测技术,建立了基于声发射技术的疲劳累积损伤试验方法。通过加筋板拉伸疲劳试验验证了该方法的可行性和适用性,实现了疲劳试验的考核目标,可为以后类似结构疲劳试验提供方法参考。
The hull is a box girder structure composed of stiffened panels. In order to solve the tech- nical problem that the connection section of marine stiffened panel specimen breaks before the as- sessment section in the fatigue test process, this paper makes a detailed study of the tensile fatigue test technology for stiffened panel. The tensile fatigue specimen design method of stiffened plate was proposed. On this basis, according to the fatigue cumulative damage theory, combined with the a- coustic emission dynamic crack detection technology, the fatigue cumulative damage test method based on acoustic emission technology was established. Then the feasibility and applicability of the method were verified by stiffened panel tensile fatigue test, and achieved fatigue test assessment ob- jectives. The research results can provide technical guidance for similar structure fatigue test.
出处
《船舶力学》
EI
CSCD
北大核心
2015年第12期1517-1524,共8页
Journal of Ship Mechanics
基金
Supported by the Major State Basic Research Development Program of China(973 Program
No.2014CB046706)
Green Ship Technology Key Laboratory of Jiangsu Province
关键词
疲劳试验
加筋板
声发射
累积损伤
fatigue test
stiffened panel
acoustic emission
cumulative damage
