China Mechanical Engineering ›› 2021, Vol. 32 ›› Issue (24): 2989-2994.DOI: 10.3969/j.issn.1004-132X.2021.24.012

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Test and Numerical Study for Buckling Performances of Segmented Toroidal Pressure Hulls

DI Chenyang1;ZHANG Jian1,2;WANG Weibo2;TANG Wenxian1   

  1. 1.School of Mechanical Engineering,Jiangsu University of Science and Technology,Zhenjiang,Jiangsu,212003
    2.China Ship Scientific Research Center,Wuxi,Jiangsu,214082
  • Online:2021-12-25 Published:2022-01-11

交接环形耐压壳屈曲特性试验与数值研究

狄陈阳1;张建1,2;王纬波2;唐文献1   

  1. 1.江苏科技大学机械工程学院,镇江,212003
    2.中国船舶科学研究中心,无锡,214082
  • 通讯作者: 张建(通信作者),男,1984年生,博士、教授。研究方向为深海耐压结构设计制造的理论与方法。E-mail:zhjian127@163.com。
  • 作者简介:狄陈阳,男,1996年生,硕士研究生。研究方向为分段式环形耐压壳非线性屈曲特性。E-mail:dichenyang163@163.com。
  • 基金资助:
    国家自然科学基金(52071160);
    江苏省自然科学基金优秀青年基金(BK20190103);
    江苏省六大人才高峰项目(KTHY-068);
    江苏省研究生科研创新计划(SJCX20_1447)

Abstract: The buckling performances of stainless segmented toroidal pressure hulls were studied under uniform external pressure. The adopted segmented toroidal pressure hulls used was as 70.5 mm, the wall thickness was as 1.319 mm and the circumferential radius of rotation was as 134 mm. Six segmented toroidal models were manufactured and the geometric measurements, hydrostatic external force tests and numerical calculations were carried out. Then, the buckling behaviors of segmented toroidal pressure hulls were analyzed, along with the effects of the segmented angles and ring parameters on the buckling were investigated. The results show that the segmented angle is not influential on the buckling loads of segmented toroidal pressure hulls. The critical buckling load value remains constant and close to that of the connecting elements when the width and thickness of the segmented ring reach a certain threshold value.

Key words: toroidal pressure hull, segmented ring, segmented angle, buckling performance

摘要: 研究了不锈钢交接环形耐压壳在均匀外压作用下的屈曲性能。使用的交接环形耐压壳的截面半径为70.5 mm,壁厚为1.319 mm,圆周旋转半径为134 mm。制作了6个交接壳模型,并对其进行几何测量、静水外力试验和数值计算,在此基础上对交接环形耐压壳屈曲行为进行分析,研究了交接角度和环肋参数对屈曲的影响规律。结果表明,交接角度对交接环壳屈曲载荷没有影响,环肋的宽度和厚度达到一定阈值时,临界屈曲载荷值保持不变且接近于交接单元的屈曲载荷。

关键词: 环形耐压壳, 交接环肋, 交接角度, 屈曲特性

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