Effects of Precise FRF Measurements for Frequency Based Substructuring
作者机构：Structural Dynamics and Acoustic Systems LaboratoryUniversity of Massachusetts Lowell One University Avenue LowellMassachusetts 01854
出 版 物：《Sound & Vibration》 (声音与振动（英文）)
年 卷 期：2018年第52卷第1期
页 面：3-7页
核心收录：
学科分类：0821[工学-纺织科学与工程] 08[工学]
主 题：measurement. modal utilized
摘 要：Impedance modeling is often utilized to generate frequency response functions of an assembled system using modal characteristics of individual *** slight inaccuracies are manifested in the characteristics of the *** those inaccuracies may seem minor in regards to the component for a traditional modal model,the inaccuracies can be amplified when impedance modeling is *** based substructuring involves inversion of the frequency response functions and therefore requires considerable accuracy for the measurement,particularly in the area of *** this study,some aspects of frequency based substructuring were explored,namely difficulties that might be encountered in experimental testing related to drive point *** majority of studies were performed using analytical models to minimize contamination of *** study focuses on connection point measurements where the actual location might be inaccessible due to physical constraints such as hardware,holes,*** the effect of introducing slight inaccuracies to the location of the drive point measurement was studied,along with other aspects related to the accuracy of the critical connection measurement.
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