A Substructure Based Reduced Order Model for Mistuned Bladed Disks

A Substructure Based Reduced Order Model for Mistuned Bladed Disks
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基于子结构的失谐叶片盘降阶模型

DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
J. Wallaschek
J. Wallaschek
中科院分区：
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文献类型：
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作者：
A. Hohl;C. Siewert;L. Panning;J. Wallaschek

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介绍了一种计算失调叶片盘受迫响应的有效方法。基于组件模式综合技术，该结构被分为子结构，即圆盘和叶片。圆盘的分量模式综合是通过快速、准确的循环对称方法计算的。最近开发的一种称为基于波的子结构的方法用于描述盘和叶片之间的（众多）耦合自由度。正交波是通过对整个结构的模态分析计算出的耦合节点的简正模态进行奇异值分解或 QR 分解而得出的。版权所有 © 2009 ASME
A efficient method for the calculation of the forced response of mistuned bladed disks is introduced. Based on the Component Mode Synthesis techniques the structure is divided into substructures, namely the disk and the blades. The Component Mode Synthesis of the disk is calculated with a fast and accurate cyclic symmetry approach. A recently developed method called Wave Based Substructuring is used to describe the (numerous) coupling degrees of freedom between the disk and the blades. The orthogonal waves are derived with a Singular Value Decomposition or a QR decomposition from the coupling nodes’ normal modes calculated by a modal analysis of the full structure.Copyright © 2009 by ASME