SUMMARY
The analysis of processes occurring in the medium under the influence of vibrational forces is considered. The obtained results are synthesized for the development of a new class of vibration machines that provide criteria for efficiency and reliability. The main criterion for evaluating the effectiveness is adopted function of the amplitude and frequency of vibrations, which determines the speed or acceleration of the compaction process. At the same time, the logic of the stage-by-stage examination of the compaction process is proved. The first of them – the process of reconnecting the components of the mixture – intensively proceeds only in the absence of any significant external loads. This process is realized by providing a machine with a low speed, that is, large amplitude and a low frequency of vibrations. The second is the process of approaching the particles of a mixture with a denser, more compact conclusion of the components of this mixture with each other. It proceeds in the presence of significant dynamic loads, the increase of which to a certain limit gives a positive effect. At this stage, small vibration amplitudes and a high frequency are realized. One of the most problematic places in solving this approach is the lack of not only generally accepted methods for assessing these properties, but even a single view of its nature. In a newly vibration machine, these processes are achieved through the targeted use of shock and vibration. Structurally, this is ensured by the use of vibration limiters. The object of research is vibration and vibration shock processes in machines for compaction of building mixtures in road and construction industries. Particulars of the corresponding selection of the rigidity of the vibration limiters are determined, the rational choice of the ratio of the impact time and the vibration period is made. Thanks to this, new phenomena are discovered during the implementation of staged modes of operation with the installation of several stable modes. The reliability analysis of vibration machines is carried out by methods of qualitative and quantitative analyzes. The simplicity of the machine design ensures its reliability. The mode of compaction of the concrete mix is reduced by half in comparison with the existing vibration parameters.