Publication detail
Parameter effecting the experimental determination of modal properties
ŘEHÁK, K. KUČERA, P. PROKOP, A.
English title
Parameter effecting the experimental determination of modal properties
Type
conference paper
Language
en
Original abstract
The investigation of structure dynamic behavior can be done by finding modal properties, which are based on the relation of force and vibration response. The information about exact force value is in most application unknown, but the investigation can be done for unit magnitude of force. In case of using modal exciter, the force applied to structure is transferred by connection between modal exciter and structure. The stiffness of connection part can affect the dynamic behavior and change the modal properties, or response of investigated part, because of additional modal properties of connection part. This article is focused on the influence of two different rod stiffness during modal properties identification. The modal exciter is used to find potential critical frequency during decreasing frequency. The affect is evaluated on the surface normal velocity as well as acoustic pressure. The stiffness of rod significantly affects the dynamic response of structure and based on that can add frequency, when the emitted noise is high.
English abstract
The investigation of structure dynamic behavior can be done by finding modal properties, which are based on the relation of force and vibration response. The information about exact force value is in most application unknown, but the investigation can be done for unit magnitude of force. In case of using modal exciter, the force applied to structure is transferred by connection between modal exciter and structure. The stiffness of connection part can affect the dynamic behavior and change the modal properties, or response of investigated part, because of additional modal properties of connection part. This article is focused on the influence of two different rod stiffness during modal properties identification. The modal exciter is used to find potential critical frequency during decreasing frequency. The affect is evaluated on the surface normal velocity as well as acoustic pressure. The stiffness of rod significantly affects the dynamic response of structure and based on that can add frequency, when the emitted noise is high.
Keywords in English
vibration, modal exciter, experiment,acoustic.
Released
22.05.2018
Publisher
JVE Intenational
Location
Kaunas, Lithuania
ISSN
2345-0533
Book
Vibroengineering PROCEDIA
Volume
18
Number
1
Pages from–to
96–100
Pages count
5
BIBTEX
@inproceedings{BUT148086,
author="Kamil {Řehák} and Pavel {Kučera} and Aleš {Prokop},
title="Parameter effecting the experimental determination of modal properties",
booktitle="Vibroengineering PROCEDIA",
year="2018",
volume="18",
number="1",
month="May",
pages="96--100",
publisher="JVE Intenational",
address="Kaunas, Lithuania",
issn="2345-0533"
}