Open AccessAn Experimental and Numerical Evaluation of Natural Frequencies and Mode Shapes using Vibration Isolator to Transport “Satellite Model–Plate Connecting Interface” System
Author(s) -
Abbas Waheed Dahham,
П.А. Тараненко,
A. V. Erpalov
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1094/1/012020
Subject(s) - vibration , natural frequency , vibration isolation , acoustics , workbench , modal analysis , isolator , finite element method , perpendicular , normal mode , accelerometer , structural engineering , oscillation (cell signaling) , engineering , physics , geometry , mechanical engineering , electronic engineering , mathematics , quantum mechanics , biology , visualization , genetics
This paper examines the natural frequencies and mode shape numerically and experimentally using vibration isolator for satellite model-plate connecting interface. The experiment was carried out using a modern software and hardware complex LMS. Vibration accelerations on the object were measured at 13 points in three mutually perpendicular directions using one-component and three-component PCB accelerometers with a sensitivity of 100 mV/g. Excitation was carried out with a PCB 086D50 m modal hammer. The SCADAS mobile data acquisition system was utilized to record the response from the sensors. While the numerical calculations were performed in the finite element package ANSYS Workbench. The result shows that the natural frequencies are less dependent on the system damping where the most considerable difference (about 10%) is observed in those forms, which plate makes flexural vibrations; the six natural modes of vibration of the satellite model (as a rigid body), the first three lowest forms correspond to vibrations in the plane. While the other oscillations were out of the plane, to reduce the oscillation frequency of the product from the plane (around the x and z axes), it is recommended to reduce the distance between the shock absorbers.