METHOD FOR SIMULATION OF HARMONIC AND ACCIDENTAL EFFECTS Russian patent published in 2015 - IPC G01M7/02 

FIELD: machine building.

SUBSTANCE: invention relates to vibration equipment. Method suggests the vibrator use, in it the piezoelement is made as package of the piezoceramic rings, at that inside the rings a cylindrical mandrel is installed. Axis of symmetry of the mandrel is located perpendicularly to the base, and disk is located in it top part such that it is contact with the top piezoceramic ring of the package of the piezoceramic rings of the piezoelement, and on the top surface of the disk the measuring piezoelements are installed, they are in contact with two-step cylindrical disk, tip is connected in its top part. The disk OD is made equal to OD of the package of the piezoceramic rings, and base is rectangular plate with four slots to secure to the studied object. At that the bottom plane of the cylindrical mandrel is located with gap in relation to the top plane of the base, and current conducting casing is made in form of the cylindrical shell. In top deformed part of the base the strain sensors are glued, and in the cylindrical mandrel the cavity is made and filled by the elements creating additional stochastic motion.

EFFECT: extension of frequency range of the vibration accelerations.

2 dwg