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首页> 外文期刊>International journal of mechanics and materials in design >Nonlinear vibration analysis of a rotor system with parallel and angular misalignments under uncertainty via a Legendre collocation approach
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Nonlinear vibration analysis of a rotor system with parallel and angular misalignments under uncertainty via a Legendre collocation approach

机译：通过Legendre Collocation方法在不确定度下具有平行和角度未对流的转子系统的非线性振动分析

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摘要

In this paper, the propagation of bounded uncertainties in the dynamic response of a misaligned rotor is investigated using a Legendre collocation based non-intrusive analysis method. A finite element rotor model is used and the parallel and angular misalignments are modelled by additions of stiffness and force terms to the system. A simplex meta-model for the harmonic solutions of the vibration problem is constructed to take into account the uncertainties. The influences of uncertainties in the fault parameters are analysed and the calculation performance of the interval method is validated. Different propagation mechanisms of the uncertainties are observed in the interval responses and discussed in case studies. The results of this study will promote the understandings of the nonlinear vibrations in misaligned rotor systems with interval variables.
机译：本文研究了基于Legendre Collocation的非侵入式分析方法，研究了在未对流转子的动态响应中传播的传播。使用有限元转子模型，并通过向系统添加刚度和力术语来建模平行和角度未对准。构建了振动问题谐波解的单纯形元模型，以考虑到不确定性。分析了故障参数中不确定性的影响，验证了间隔方法的计算性能。在案例研究中，观察到不确定性的不同传播机制，并在案例研究中讨论。该研究的结果将促进具有间隔变量的未对准转子系统中的非线性振动的谅解。

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