VIBRATION AND VIBRO-IMPACT POWER LOAD IN MECHANICAL TESTS OF MACHINE PARTS AND UNITS
Journal Title: Вісник Кременчуцького національного університету імені Михайла Остроградського - Year 2018, Vol 1, Issue 109
Abstract
Purpose. To form a scientifically grounded method and type of mechanical testing with the help of vibrating and vibroimpact loading based on the results of theoretical and experimental studies of the operation of machine parts and components. Methodology. The changes in the parameters of vibration and vibroimpact loads on test objects and their reaction are characterized. The effectiveness of applying external influences of a certain type is estimated using the initial simplified linear model, in which structural elements with different resonant frequencies are indicated. The types and methods of testing are analyzed on the basis of the initial requirements for the operability of the system under test or the strength of its elements, with an analysis of the feasibility of testing methods on existing test equipment and evaluating their effectiveness. The conditions for the mechanical testing of parts and machine components based on the volume and content of data on the test facility, the conditions of its operation, and the availability of test equipment are justified. Findings. The closest to real conditions is the use of stochastic power loads, which accurately reflect the actual operating conditions. However, because of the great laboriousness and significant costs for the manufacture of special test equipment for their implementation, the alternative is to use the power load to test objects of complex impacts. Originality. To use shock loads of complex forms on the original bench equipment, the most effective modes of mechanical testing have been determined. Practical value. Recommendations are developed for the implementation of mechanical testing modes, which realize various operating conditions for parts and components of machines. Conclusions. Realization of mechanical tests close to real conditions with a high degree of reliability is realized in production conditions on efficient small-sized vibration stands with a hydroimpulse drive. References 12, figures 5.
Authors and Affiliations
R. Iskovych-Lototskyi, Y. Ivanchuck, E. Kobylianskyi
Keywords
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- EP ID EP659668
- DOI 10.30929/1995-0519.2018.2.p1.60-65
- Views 113
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