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Vibration analysis of paper machine's asymmetric tube roll supported by spherical roller bearings

机译:球面滚子轴承支承的造纸机不对称管卷的振动分析

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This paper presents a simulation method that is used to study subcritical vibrations of a tube roll in a paper machine. This study employs asymmetric 3D beam elements based on the Timoshenko beam theory. An asymmetric beam model accounts for varying stiffness and mass distributions. Additionally, a detailed rolling element bearing model defines the excitations arising from the set of spherical roller bearings at both ends of the rotor. The results obtained from the simulation model are compared against the results from the measurements. The results indicate that the waviness of the bearing rolling surfaces contributes significantly to the subcritical vibrations while the asymmetric properties of the tube roll have only a fractional effect on the studied vibrations.
机译:本文提出了一种模拟方法,用于研究造纸机中管卷的亚临界振动。本研究采用基于Timoshenko束理论的非对称3D束元素。非对称梁模型考虑了变化的刚度和质量分布。此外,详细的滚动轴承模型定义了由转子两端的一组球面滚子轴承引起的激励。将仿真模型获得的结果与测量结果进行比较。结果表明,轴承滚动表面的起伏对亚临界振动有显着影响,而管轧辊的不对称特性对所研究的振动仅具有部分影响。

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