某沼气发酵罐风载荷响应的动力学分析与计算
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摘要
文章将发酵罐分成上、下两部分,根据国家标准GB50009-2012分别计算出各段所承受的风载,并利用ANSYS对罐体进行模态分析、风载荷诱导分析,得到罐体前五阶阵型及频率,在风载作用下导致罐体出现弯曲、扭曲以及弯曲与扭曲组合的不同程度的变形,并获得罐体的位移分布规律及应力分布情况。最大位移位于发酵罐出料口位置,其值为0.352 mm,同时横向位移是产生发酵罐变形的主要因素,最大应力发生在发酵罐罐顶出气口及罐底出料口位置处,最大应力为55.7 MPa。
In this paper, the fermentation tank was divided into upper and lower parts, and wind load was calculated for each section respectively. The modal and wind load analysis were taken for the tank using ANSYS. The first five order formation of the tank and their frequency were obtained. Under the wind load, the tank body appeared bend, twist and the different degree of deformation that bend and twist combined. The displacement distribution and stress distribution of the tank were also obtained. The maximum displacement was located at the discharge outlet of the fermentation tank, the value of which was 0.352 mm, while the horizontal displacement was the main factor of deformation of fermentation tank. The maximum stress occurred at the top gas outlet and the bottom discharge outlet of the fermentation tank, and the value was 55.7 MPa.
In this paper, the fermentation tank was divided into upper and lower parts, and wind load was calculated for each section respectively. The modal and wind load analysis were taken for the tank using ANSYS. The first five order formation of the tank and their frequency were obtained. Under the wind load, the tank body appeared bend, twist and the different degree of deformation that bend and twist combined. The displacement distribution and stress distribution of the tank were also obtained. The maximum displacement was located at the discharge outlet of the fermentation tank, the value of which was 0.352 mm, while the horizontal displacement was the main factor of deformation of fermentation tank. The maximum stress occurred at the top gas outlet and the bottom discharge outlet of the fermentation tank, and the value was 55.7 MPa.
引文
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[6] 林国庆,时黛.产沼气厌氧发酵罐的温度场分析[J].中国沼气,2017,35(6):21-26.
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[9] GB50009-2012,建筑结构荷载设计规范[S].
[10] 王正,磊,张西义.焦炭塔结构的固有频率和振型研究[J].压力容器,2005,22(8):24-28.
[11] 郝海明.大型可展开结构耦合动力分析[D].西安:西安电子科技大学,2012.
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[13] 马宇山,金涛.基于ANSYS的塔设备地震与风载分析[J].制造业自动化,2010,32(1):1-6.
[2] 张文涛,王晶禹.基于ANSYS的球型储罐防风模拟分析[J].安全与环境工程,2009,16(2):105-110.
[3] 周秀芝.压力容器在非正常工况下动态响应情况研究[D].北京:中国石油大学,2008.
[4] 刘建秀,陈淮.机械系统轴系动力分析的动态有限元法[J].矿山机械,1999,(6):53-54.
[5] 颜云辉,谢里阳,韩清凯.结构分析中的有限单元法及其应用[M].沈阳:东北大学出版社有限公司,2000.
[6] 林国庆,时黛.产沼气厌氧发酵罐的温度场分析[J].中国沼气,2017,35(6):21-26.
[7] 张玉英,谭建一.塔设备风荷响应的研究[J].河南化工,1996,(9):26-29.
[8] 杨涛,李光攀,过学迅.基于ANSYS的专用车车架模态分析[J].专用汽车,2008,(11):48-50.
[9] GB50009-2012,建筑结构荷载设计规范[S].
[10] 王正,磊,张西义.焦炭塔结构的固有频率和振型研究[J].压力容器,2005,22(8):24-28.
[11] 郝海明.大型可展开结构耦合动力分析[D].西安:西安电子科技大学,2012.
[12] 帅健,于桂杰.管道及储罐强度设计[M].北京:石油工业出版社,2010.
[13] 马宇山,金涛.基于ANSYS的塔设备地震与风载分析[J].制造业自动化,2010,32(1):1-6.