2_2011_sen_9

Title of the article

ESTIMATED PARAMETERS FOR THE TRANSIENT OSCILLATIONS OF A MECHANICAL SYSTEM WITH ONE DEGREE OF FREEDOM IN THE VIBRATION TEST
Authors

Nazarenko V.G., Candidate of Technical Sciences, Associate Professor, Director of the Institute of Information Technologies of the Belarusian State University of Informatics and Radio Electronics, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.

Daleckaya J.B., Methodist of the Faculty of Training and Retraining of the Institute of Information Technologies of the Belarusian State University of Informatics and Radio Electronics, Minsk, Republic of Belarus

Mironova P.V., Engineer of the Training Department of the Institute of Information Technologies of the Belarusian State University of Informatics and Radio Electronics, Minsk, Republic of Belarus
In the section DYNAMICS DURABILITY OF VEHICLES AND STRUCTURES
Year 2011 Issue 2 Pages 51-53
Type of article RAR Index UDK 621. 396.6 Index BBK  
Abstract When testing by sweep method the items are operated by the vibrations at all the frequencies within the range. Choosing the conditions of the accelerated tests on the action of sinusoidal vibrations with variable exciting frequency requires determining of dynamic amplitude-frequency characteristics (AFC) of items. The solution of differential equation of the load kinematic excited motion and the results of theoretical and experimental study of AFC of mechanical systems under transient vibrations are given. The parameters of the dynamic AFC depending on the speed of frequency scanning are worked out. Data processing are resulted in receiving empirical dependences for evaluating the maximum value of acceleration-relative transfer ratio, the ratio of the maximum of dynamic AFC frequency shift relative to the frequency of natural oscillations, coefficient of expansion of the dynamic resonance frequency band, the ratio of average AFC frequency shift relative to the frequency of natural oscillations for the exponential and linear laws of frequency scanning. The experimental data correlated with a high degree of compliance with theoretical results.
Keywords

sinusoidal vibration, mechanical system, non-stationary vibrations, resonance, amplitude-frequency characteristics
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Bibliography
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