Forced Response of Mistuned Bladed Disks: Quantitative Validation of the Asymptotic Description
Forced Response of Mistuned Bladed Disks: Quantitative Validation of the Asymptotic Description
复制标题
DOI：
10.2514/1.b34631
复制
发表时间：
2014-03
影响因子：
1.9
通讯作者：
Oualid Khemiri;C. Martel;R. Corral
中科院分区：
文献类型：
--
作者：
Oualid Khemiri;C. Martel;R. Corral
小失谐的叶盘强迫响应的影响进行了分析，使用最近推出的方法：渐近失谐模型。渐近失谐模型是一个非常简化的模型，它是直接从失谐叶盘的完整配方使用一致的扰动程序的基础上的失谐失真的相对较小。详细描述了一个现实的叶盘结构的渐近失谐模型的推导过程。几种不同的失谐模式和强迫条件下的渐近失谐模型的结果进行了比较，从高分辨率的有限元模型。渐近失谐模型产生定量准确的结果，而且，可能更相关，它给出了精确的信息的因素（调谐模式和组件的失谐模式），实际上发挥了作用，在振动强迫响应失谐叶盘。
The effect of small mistuning in the forced response of a bladed disk is analyzed using a recently introduced methodology: the asymptotic mistuning model. The asymptotic mistuning model is an extremely reduced, simplified model that is derived directly from the full formulation of the mistuned bladed disk using a consistent perturbative procedure based on the relative smallness of the mistuning distortion. A detailed description of the derivation of the asymptotic mistuning model for a realistic bladed disk configuration is presented. The asymptotic mistuning model results for several different mistuning patterns and forcing conditions are compared with those from a high-resolution finite element model. The asymptotic mistuning model produces quantitatively accurate results, and, probably more relevant, it gives precise information about the factors (tuned modes and components of the mistuning pattern) that actually play a role in the vibrational forced response of mistuned bladed disks.