摘要
采用有限元结合应力分类方法对受内压无折边斜锥壳与筒体连接结构的应力分布进行分析,结果表明:内压作用下斜锥壳的大端和小端均存在较大的局部应力,其中大端应力强度最大值发生在斜锥壳与大端连接处锥角最大的位置,小端应力强度最大值发生在斜锥壳与小端连接处靠近下部锥角较小的位置。斜锥壳大、小端处应力主要为弯曲应力,但斜锥壳小端处弯曲应力高于大端处。为便于对不同尺寸斜锥壳和筒体连接处的应力分布情况进行对比,文中引入了应力增值系数并通过此系数的变化研究此处应力的变化规律。
The finite element method was used to analyze the stress distribution of the connection structure between non folded slant conical shell and cylinder under internal pressure.The results showed that under internal pressure,there were significant local stresses at both the large and small ends of the slant conical shell.The maximum stress intensity at the large end occurred at the position with the largest cone angle at the connection between the slant conical shell and the large end,while the maximum stress intensity at the small end occurred at the position with a small cone angle near the lower part of the connection between the slant conical shell and the small end.Bending stress is the main stress at both the large and small ends of slant conical shells,but the bending stress at the small end of slant conical shell is higher than that at the large end.In addition,to facilitate the comparison of stress distribution at the connection between slant conical shells of different sizes and the cylinder,this paper introduces a stress amplification coefficient and studies the variation law of stress at this point through the variation of this coefficient.
作者
杨晓楠
Yang Xiaonan(SINOPEC Engineering Incorporation,Beijing,100101)
出处
《石油化工设计》
CAS
2024年第3期29-32,I0002,共5页
Petrochemical Design
关键词
斜锥壳
有限元法
应力分析
应力增值系数
slant conical shell
finite element method
stress analysis
stress amplification coefficient
