摘要
大型真空球罐的主要失效模式为薄壳屈曲失稳,开孔处是球罐的薄弱环节。接管厚度、开孔直径、开孔数量及开孔位置均能够影响球罐的抗失稳能力。本文以容积为18000m^3的大型真空球罐为例,利用通用有限元分析软件分析研究了不同接管厚度、开孔直径、开孔数量及开孔位置对大型真空球罐抗失稳能力的影响规律,有望对大型真空球罐的开孔结构设计起到一定的指导意义。
The main failure mode of large vacuum spherical tank is buckling instability of thin shell, and opening hole is the weak link of spherical tank. The nozzle thickness, diameter, number and position of the openings can affect the anti-buckling ability of spherical tanks. Taking a large vacuum spherical tank with volume 18000 m^3 as an example, this paper uses the general finite element analysis software to study the effect of different nozzle thickness,diameter, number and position of the openings on the anti-buckling ability of large vacuum spherical tank, which is expected to be of certain guiding significance to the opening structure design of large vacuum spherical tank.
作者
徐永生
杨智荣
孙亮
杨俊威
邓贵德
Xu Yongsheng;Yang Zhirong;Sun Liang;Yang Junwei;Deng Guide(China Special Equipment Inspection And Research Institute Beijing 100029)
出处
《中国特种设备安全》
2019年第3期9-12,25,共5页
China Special Equipment Safety
基金
国家质量监督检验检疫总局科技计划项目资助(2016QK203)
