船体局部密集焊缝结构疲劳性能研究

王任甫; 何亮; 孙磊

船体局部密集焊缝结构疲劳性能研究

中国船舶集团有限公司第七二五研究所, 河南洛阳 471023

详细信息

作者简介:
王任甫,男,1965年生,研究员,从事结构钢及焊接技术研究。E-mail:wangrenfu1@725.com.cn

中图分类号: TG405
计量
- 文章访问数: 56
- HTML全文浏览量: 4
- PDF下载量: 16
- 被引次数: 0
出版历程
- 收稿日期: 2023-04-21
- 网络出版日期: 2023-11-07

Study on Fatigue Performance of Local Dense Weld Structures of Ship Hulls

Luoyang Ship Material Research Institute, Luoyang 471023, China

摘要

摘要: 针对船体局部结构密集焊缝的疲劳问题,通过模拟实际服役环境,开展两种局部密集焊缝结构的工程型疲劳试验和结构应力仿真计算,并提出改善密集焊缝结构疲劳性能的方法。研究结果表明:海水腐蚀环境下,随着相邻焊缝间距的减少,结构峰值应力增大,密集焊缝结构的疲劳寿命降低;当相邻焊缝距离较近不可避免时,采用堆焊熔修处理可有效提高其疲劳性能。
- 局部密集焊缝结构 /
- 疲劳性能 /
- 应力分布 /
- 堆焊熔修
Abstract: To solve the fatigue problem of the dense welds of the local hull structures, by simulating the actual service environment, the engineering fatigue tests and structural stress simulation calculation are carried out on two types of local dense weld structures, and the methods to improve the fatigue performance of the dense weld structures are proposed. It is concluded that under the seawater corrosion environment, as the distance between the adjacent welds decreases, the peak stress of the structure increases, and the fatigue life of the dense weld structures decreases. When the distance between the adjacent welds is small, the surfacing and repair welding methods can effectively improve their fatigue performances.
- local dense weld structures /
- fatigue performance /
- stress distribution /
- surfacing and repair welding methods

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参考文献(15)

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