摘要
将波节管简化成附有n个集中质量且具有相同抗弯刚度的等截面直管,通过填补法对波节管进行单元离散化,采用旋转壳的分段积分法计算,利用里茨法进行波节管的特征值分析,计算得到波节管弯曲振动的前二阶固有频率.并用得到的结果与有关文献进行对比,结果证明该分析方法的有效性与准确性.
Abstract： The bellows was considered as n changeless sectional pipe with the same bending rigidity and concentrated mass, and the fill method was introduced to separate the model of the bellows, and then sectional integration method of revolution shells was introduced for calculation. Ritz Method was used to make eigenvalue analysis for bellows and the natural frequency of the bellows bending vibration was obtained. The calculation results were compared with the data of other literatures, and the result proved validity and accuracy of the analytic method.
出处
《沈阳化工大学学报》
CAS
2013年第2期146-149,173,共5页
Journal of Shenyang University of Chemical Technology
关键词
波节管
弯曲振动
固有频率
里茨法
bellows
bending vibration
natural frequency
Ritz method
