Abstract
Abstract This paper numerically and experimentally examines the natural frequencies and mode shapes in a satellite model-plate connecting interface installed on flexible gas-inflated jacks in order to assess the effect of external impacts on the natural frequencies of the satellite model and to thus generate a reference for appropriate vibration isolators for transportation and launch as required. The experimental determination of the frequencies and mode shapes of vibration in the system was carried out using modern software in conjunction with the hardware loading model satellite (LMS). Numerical calculation of the natural frequencies and mode shapes of the research object was performed in the finite element package ANSYS Workbench, with results suggesting that the suspension system (gas inflatable jacks) was sufficiently flexible and did not affect the natural frequencies at which the system under investigation, the satellite model-connecting interface plate, began to deform. Experimental determination of the natural frequencies and mode shapes of vibration for the satellite model-connecting interface plate was then conducted in the range from 44 Hz to 200 Hz; the differences in natural frequencies between the calculations and experiments averaged 10 to 15%.