Determination of the frequency of natural vibration of rubber shock absorbers during compression

The object of the research: The work used rubbers of different hardness, which are model samples for testing cylindrical shock absorbers with a coefficient of 0.42, which was carried out under compression on a laboratory stand. Investigated problem: Determining the limits of operational loads of rubber shock absorbers is an important task in the development of methods for non-destructive testing of rubber shock absorbers. Therefore, the object of the study is the influence of the limit values of the parameters of rubber shock absorbers during compression to determine the frequency of their natural vibrations under harsh operating conditions. One of the most problematic issues is cylindrical shock absorbers with a shape factor of less than 1.0: where the height is much greater than the diameter. The aim of the study is to establish the patterns of influence of the rubber shock absorber material, compression conditions and boundary conditions of atmospheric aging on the frequency of natural vibrations to determine their boundary conditions of operation. The main scientific results: According to the indicators of relative deformation during compression, the use of rubber shock absorbers from the high hardness group is recommended for more severe load conditions during operation. Soft rubbers are characterized by increased relative deformation of the geometric size (height) of the shock absorber during compression, which, under increased loads, can lead to their destruction. The results obtained on model samples can be verified on rubber shock absorbers manufactured in industrial conditions. The area of practical use of the results of the study: The conducted studies allow creating methods for selecting rubber shock absorbers for certain operating conditions depending on its shape coefficient and to simulate aging in atmospheric conditions. Innovative technological product: rubber shock absorber with increased operational reliability. Scope of the innovative technological product: designed for vibration isolation of industrial equipment and engines.