论文部分内容阅读
文章研究了环向加肋对充液圆柱壳耦合振动的影响。基于Love壳体理论,考虑壳体内部完全充液,采用波动法建立充液环肋圆柱壳耦合振动的频率特征方程,得到了不同边界条件下的耦合频率值。通过与已有文献数据对比,验证了文中研究方法的有效性和正确性。最后通过算例,分析了环肋参数对充液圆柱壳结构耦合振动的影响。结果表明,肋骨尺寸、数目的增加,对充液圆柱壳振动频率的提升影响明显,而内、外加肋形式所产生的影响则相对有限;肋骨对频率的影响主要表现在周向波数较大时;肋骨高度变化对耦合振动频率的影响更明显。
The effect of ring-stiffeners on coupling vibration of liquid-filled cylindrical shell is studied. Based on the theory of Love shell, considering the complete filling of the interior of the shell, the frequency characteristic equation of the coupled vibration of the liquid-filled annular cylindrical shell was established by wave method, and the coupling frequency under different boundary conditions was obtained. By comparing with the existing literature data, the validity and correctness of the research methods in the text are verified. Finally, an example is given to analyze the influence of ring-rib parameters on the coupled vibration of liquid-filled cylindrical shell. The results show that the increase of rib size and number has a significant influence on the vibration frequency of liquid-filled cylindrical shell, while the influence of internal and external rib forms is relatively limited. The influence of ribs on frequency is mainly reflected in the case of larger circumferential wave number The influence of rib height change on coupling vibration frequency is more obvious.