Single-degree-of-freedom vibration test device

Abstract

The present invention discloses a single-degree-of-freedom vibration test device which comprises a damper, a wobble plate, a torsion spring, a stepper motor, a pair of measuring light eyes, an indicating pointer, an excitation pointer, a connection rod, push pins, and a fixed bracket. Measurement concave teeth are uniformly distributed on the wobble plate in a ring. One end of the torsion spring is connected to the wobble plate, and the other end is connected to the excitation pointer. The damper is a U-shaped structure and comprises a flat plate part and two extending part which are formed by extending from two ends of the flat plate part. The flat plate part can rotate freely, and the two extending parts are above and under the wobble plate. The stepper motor is connected to the excitation pointer. A pair of measuring light eyes is at two sides of the wobble plate, and the beams of the measuring light eyes can detect the concave teeth on the wobble plate. The indicating pointer is installed on the wobble plate. The wobble plate, the connection rod and the torsion spring are integratedly fixed to the axis eye of the fixed bracket through upper and lower push pins. A magnetic steel is pasted to the damper, and the area of the wobble plate included in the damper and the magnitude of damping are changed through adjusting the position of the damper.

Description

Technical field: [0001] The invention relates to a single-degree-of-freedom vibration experiment device, which belongs to the field of theoretical mechanics and university physics experiment teaching. Background technique: [0002] The mass-spring system is mentioned in the textbooks of "University Physics" and "Theoretical Mechanics". Many vibration problems can be simplified into this mechanical model; this model can be divided into three situations: free vibration, damped vibration and forced vibration. . However, due to the complex and large structure, the inability to mass-produce, and the relatively high price of the existing experimental devices similar to the model, they can only be used for demonstration experiments and cannot allow every operator to participate. [0003] Therefore, it is necessary to improve the prior art to solve the deficiencies of the prior art. Invention content: [0004] The invention provides a single-degree-of-freedom vibration experimen...

AI Technical Summary

Problems solved by technology

However, the existing experimental devices with similar models can only be used for demonstration experiments due to their complex and large structures, mass production, and relatively high prices, and cannot allow every operator to participate.

Images