Lever-type relations in dynamic interactions of mechanical oscillatory systems with two degrees of freedom
The article deals with mechanical oscillatory systems with leverage mechanisms of various constructive and technical forms and types of turning centers arrangement. There has been shown that features of dynamic interactions in such systems should be taken into consideration because of the type of interrelations between input and output parameters. Relations between points displacement in two-dimensional vibroprotective systems have been established. It should be mentioned that the use of lever-type relations of the first and second class in vibroprotective systems introduces various relations in their schemes since the transfer ratio has meaning (+) for second class levers. Dependencies of frequency rate of natural system oscillations on the size of the transfer relation of the first and second class levers have been given. It has been shown that first and second class lever relations influence on dynamic properties of system in a different way since they realize different types of feedback. It has been defined that lever transfer relation has its own sign and size that predetermines values of these parameters for an assessment of stable regions. It has been taken into account that the area of stable regions should be considered separately: according to the second class lever relations and to predetermined combination of parameters instable regions are possible as positive relations are being implemented into the system.