Abstract
A geared rotor system model consisting of UPE gears and steel gears for medium speed, medium load and long servo time is proposed. The solid models of steel-steel, steel-UPE and UPE-UPE gear systems were established. The dynamic models of steel-UPE gear system and UPE-UPE gear system were reconstructed by using the theoretical mechanical model of UPE. The time-varying meshing stiffness of three gear systems is analyzed. The vibration responses of three gear systems are studied by STFT method. The dynamic loads of three gear systems under different loads and rotational speeds are researched in detail, and the changing rules of dynamic loads of three gear systems under different loads and rotational speeds are revealed. At last, the first ten modes of three gear systems are calculated and the results are discussed. At the same time, the modal results are used to verify the correctness of the research on vibration response and dynamic load of three gear systems.
Highlights
With the rapid development of logistics industry, the performance requirements of transport equipment are rising
Vibration and noise mostly come from mechanical transmission system, and the main part of mechanical transmission system is gear transmission system
Due to the properties of metals, vibration and noise may be relatively obvious during the transmission of gears, which is one of the causes of faults and invalidation of gears, to reduce vibration and reduce noise of the operating gears has become one of the major researches on improving the performance of the gear transmission system
Summary
With the rapid development of logistics industry, the performance requirements of transport equipment are rising. The majority of researches and application of the passive vibration suppression uses particle damping technology; the vibration and noise of the geared rotor system would be suppressed by adding the particle damping in the cavities of the machinery. There are no branched chains and double bonds in the molecular structure, this gives UPE the superior mechanical properties that other conventional molecular weight polyethylene does not have. It is widely used in general transmission equipment, mining and metallurgical equipment, food machinery, medical equipment and artificial joints. UPE gear has properties including large damping and small friction coefficient, etc., and its performance in vibration reduction, noise reduction, lightweight and improve power transmission accuracy is more excellent than most metal gears. The first ten modes of three gear systems are calculated, and the results of modal calculation are discussed
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