铝合金典型节点疲劳性能模型试验研究
Fatigue tests for typical welded joints of aluminum alloy
王艺陶 1张凡 1竺一峰 1朱云龙1
作者信息
- 1. 中国船舶科学研究中心,江苏无锡 214082
- 折叠
摘要
为了合理地评估铝合金船体结构的疲劳强度,开展5083铝合金船体结构典型节点设计,并完成类标准试样和实尺度试样2种结构形式的疲劳试验.基于类标准试样试验结果得到纵向焊缝典型节点P-S-N曲线,并与ⅡW规范进行比较,试验所得曲线与规范曲线疲劳寿命预测结果相差4.32％;基于实尺度试样试验结果对规范曲线选取的合理性进行验证,为铝合金材料船体结构疲劳强度评估提供参考.
Abstract
In order to provide a reasonable assessment for the fatigue strength of ship hull structures built up by alumin-um alloy,typical welded joints of 5083 aluminum alloy ship structures are designed,and fatigue tests are performed on the two kinds of specimens,standard specimens and full-scale specimens respectively.Based on the fatigue test outcomes of the standard specimens,representative P-S-N curves are established specifically for longitudinal weld joints.A comparative ana-lysis is then undertaken against the International Institute of Welding(ⅡW)standard,revealing a marginal 4.32％disparity between the experimental and standard curve fatigue life predictions.Furthermore,the fatigue test results obtained from full-scale specimens served as a crucial validation tool,substantiating the rationality of the chosen standard curve.This valida-tion process contributes valuable insights to the assessment of fatigue strength in aluminum alloy ship structures within the broader scope of structural integrity analysis.
关键词
铝合金船体结构/疲劳性能/模型试验/S-N曲线Key words
aluminum alloy ship structures/fatigue performance/model tests/S-N curve引用本文复制引用
基金项目
国家重点研发计划资助项目(2024YFE0104300)
国家自然科学基金青年项目(52001284)
国家自然科学基金青年项目(52192694)
江苏省自然科学基金青年项目(BK20200166)
出版年
2024
NETL
NSTL
万方数据