水下耐压环肋圆柱壳强度试验不确定度研究
Research on uncertainty of underwater pressure ring ribbed cylindrical shell strength test
高原 1陈沙古 1李海涛 2谢晓忠 1黄如旭 1陆波2
作者信息
- 1. 中国船舶科学研究中心,江苏无锡 214082;深海技术科学太湖实验室,江苏无锡 214082;深海载人装备全国重点实验室,江苏无锡 214082
- 2. 中国船舶科学研究中心,江苏无锡 214082;深海技术科学太湖实验室,江苏无锡 214082
- 折叠
摘要
本文基于测量不确定度评定方法,对水下耐压环肋圆柱壳强度试验结果进行了不确定度研究,建立一套适用于水下耐压结构强度试验的不确定度分析方法,给出环肋圆柱壳典型位置应力在一定置信水平下的置信区间.研究表明,对于精车加工的环肋圆柱壳模型典型位置的应力,数据测量与杨氏模量引起的不确定度最大,板厚和初挠度引起的不确定度相对较小.本文研究结果对提高水下耐压结构强度试验技术和试验精度具有参考意义.
Abstract
In this paper,based on the law of uncertainty expansion,the uncertainty analysis of the strength test results of underwater pressure ring rib cylindrical shell is studied,and a set of uncertainty analysis method suitable for underwater pressure structure strength test is established.The confidence interval of typical position stress of annular ribbed cylindrical shell under certain confidence level is given.The results show that the uncertainty caused by data measurement and Young's modulus is the largest for the stress in the typical position of the circular rib-cylindrical shell model with fine turning,while the uncertainty caused by plate thickness and initial deflection is relatively small.The results of this paper have reference sig-nificance for improving the test technique and test accuracy of underwater compressive structure strength.
关键词
耐压结构/环肋圆柱壳/强度/不确定度Key words
pressure structure/annular ribbed cylindrical shell/strength/uncertainty引用本文复制引用
出版年
2024
NETL
NSTL
万方数据