含酒窝缺陷纵环加筋圆柱壳侧压后屈曲缩尺模型研究

于伟; 苏臣; 丁家玮

doi:10.3724/j.gyjzG22082203

含酒窝缺陷纵环加筋圆柱壳侧压后屈曲缩尺模型研究

doi: 10.3724/j.gyjzG22082203

于伟^1,2,
苏臣¹,
丁家玮³

1. 桂林理工大学土木与建筑工程学院, 广西桂林 541004;
2. 广西建筑新能源与节能重点实验室, 广西桂林 541004;
3. 山东美誉工程咨询有限公司, 济南 250000

基金项目:

国家自然科学基金项目（51868013）；广西科技基地和人才专项（桂科AD19245127）；桂林理工大学博士科研启动基金（GUTQDJJ2017034）。

详细信息

作者简介:
于伟，博士，主要从事结构工程和工程力学方向的研究。yuwei@glut.edu.cn

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出版历程
- 收稿日期: 2022-08-22
- 网络出版日期: 2025-07-15

Research on the Lateral Compression Post-Buckling Similitude Model of Stiffened Cylindrical Shells with Dimple Imperfections

1. College of Civil and Architecture Engineering, Guilin University of Technology, Guilin 541004, China;
2. Guangxi Key Laboratory of New Energy and Building Energy Saving, Guilin 541004, China;
3. Shandong Meiyu Engineering Consulting Co., Ltd., Jinan 250000, China

摘要

摘要: 新型干式煤气柜柜体属于大型薄壁纵环外加筋圆柱壳，该类结构的屈曲特性比较显著且对酒窝缺陷比较敏感。而针对含酒窝缺陷大型薄壁纵环外加筋圆柱壳的屈曲试验，因受试验设备、场地、材料和经费等条件的影响，一般采用缩尺模型试验。以含酒窝缺陷纵环矩形外加筋圆柱壳为研究对象，采用密加筋理论，基于结构体系的总能量推导结构侧压屈曲的广义相似条件和缩尺原理公式。基于酒窝缺陷函数，采用位移加载对纵环矩形外加筋圆柱壳进行静力分析，将酒窝缺陷引入完善结构，建立含酒窝缺陷纵环矩形外加筋圆柱壳有限元模型，对含酒窝缺陷纵环矩形外加筋圆柱壳进行侧压后屈曲不完全相似分析。结果表明：结合相应的屈曲缩尺原理公式，得到的含酒窝缺陷纵环矩形外加筋圆柱壳不完全相似缩尺模型的侧压后屈曲荷载-位移曲线、屈曲荷载和屈曲模态，能够较好地预测其原型结构的后屈曲特性，且不完全相似缩尺模型与原型的泊松比越接近，后屈曲相似预测越准确。
- 加筋圆柱壳 /
- 酒窝缺陷 /
- 侧压后屈曲 /
- 能量法 /
- 相似预测
Abstract: The new type of dry gas holder is a large thin-walled longitudinal-ring cylindrical shell with external reinforcement.The buckling characteristics of this kind of structure are relatively significant and sensitive to dimple imperfections.Due to limitations in test equipment，site conditions，materials，and funds，the buckling characteristics of large thin-walled longitudinal-ring stiffened cylindrical shells with dimple imperfections are generally studied by scaled model test.Generalized similitude condition and scaling laws were derived based on the smear stiffened method and energy method.Based on the dimple imperfection function，using static analysis，dimple imperfections were introduced into ideal stiffened cylindrical shells.An incomplete similarity analysis for the post-buckling of longitudinal-ring rectangular stiffened cylindrical shells with dimple imperfections was carried out under lateral compression.The results showed that combined with the corresponding buckling scaled principle formula， the post-buckling of rectangular stiffened cylindrical shells with dimple imperfections under lateral compression based on the incomplete similarity model could better predict the post-buckling characteristics of the prototype.Furthermore，the closer the Poisson's ratio of the incomplete similarity models was to that of the prototype， the more accurate the post-buckling similarity prediction became.
- stiffened cylindrical shell /
- dimple imperfections /
- lateral compression post-buckling /
- energy method /
- similitude prediction

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参考文献(28)

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