Modeling and vibration analysis of rotating cylindrical–cylindrical shells with multi-ring hard-coating damping under arbitrary boundary conditions

IF 2.9 3区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY
Ming Fu, Peng Wang, Yufeng Chang, Qingpeng Han, Yu Wang, Chang Li, Yue Gu
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Abstract

The work focuses on analyzing the traveling wave vibration characteristics of high-speed rotating multi-ring hard-coating damping cylindrical–cylindrical shells with discontinuous connections under arbitrary boundary conditions. Considering the single shell is frequently bolted to other shell structures, with the junction only made within the bolt action area. By improving the distribution of a conventional entire circumference continuous artificial spring, a discontinuous arc connection is established to simulate a bolted junction condition. Simultaneously, the arbitrary boundary conditions are established by employing the artificial spring technique. Given the existence of appendages along with the lightweight requirement, a multi-ring hard-coating application strategy on the shells is better suited for actual projects. Therefore, based on the parametric multi-partitioning method, the multi-ring application strategy model is constructed for effective suppression of harmful vibration. The Sanders’ shell theory and the Rayleigh–Ritz method are combined to derive dynamic equations, while the matrix eigenvalues are calculated by utilizing the state space method. Further, the influences on parameters like connection stiffness, hard-coating ratio, length ratio, etc. upon the traveling wave frequencies and modal loss factor of the shell structure are discussed in detail.

任意边界条件下多环硬涂层旋转圆柱壳的建模与振动分析
研究了任意边界条件下高速旋转多环非连续连接硬涂层阻尼圆柱壳的行波振动特性。考虑到单壳经常被螺栓连接到其他壳结构上,而连接只在螺栓作用区内进行。通过改进传统的全周长连续人工弹簧的分布,建立了一种模拟螺栓连接条件的不连续圆弧连接。同时,利用人工弹簧技术建立了任意边界条件。考虑到附件的存在以及轻量化的要求,外壳上的多环硬涂层应用策略更适合实际项目。为此,基于参数多重划分方法,构建了有效抑制有害振动的多环应用策略模型。结合Sanders壳理论和Rayleigh-Ritz方法推导动力方程,利用状态空间方法计算矩阵特征值。进一步讨论了连接刚度、硬涂层比、长度比等参数对壳结构行波频率和模态损失因子的影响。
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来源期刊
The European Physical Journal Plus
The European Physical Journal Plus PHYSICS, MULTIDISCIPLINARY-
CiteScore
5.40
自引率
8.80%
发文量
1150
审稿时长
4-8 weeks
期刊介绍: The aims of this peer-reviewed online journal are to distribute and archive all relevant material required to document, assess, validate and reconstruct in detail the body of knowledge in the physical and related sciences. The scope of EPJ Plus encompasses a broad landscape of fields and disciplines in the physical and related sciences - such as covered by the topical EPJ journals and with the explicit addition of geophysics, astrophysics, general relativity and cosmology, mathematical and quantum physics, classical and fluid mechanics, accelerator and medical physics, as well as physics techniques applied to any other topics, including energy, environment and cultural heritage.
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