Semi-active bump leveler with adjustable parameters based on magnetostriction materials

Abstract

The invention aims to provide a semi-active bump leveler with adjustable parameters based on magnetostriction materials. The semi-active bump leveler comprises a base, an upper end cover and a magnetostriction unit. Spring guide columns are fixed to the base; the upper end cover is installed on the spring guide columns; springs are installed on the spring guide columns in a sleeved mode; bolts for limiting the position of the upper end cover is installed at the upper ends of the spring guide columns; the upper end cover is located between the bolts and the springs and can vertically move along the spring guide columns; magnetostriction unit sleeves are fixed to the base; magnetostriction unit base springs are installed in the magnetostriction unit sleeves; the lower ends of the magnetostriction unit base springs are fixedly connected with the base; the upper ends of the magnetostriction unit base springs are fixedly connected with magnetostriction unit supporting columns; the magnetostriction unit is installed at the upper ends of the magnetostriction unit supporting columns; clamping plates are fixed below the upper end cover; the magnetostriction unit is arranged between the clamping plates. According to the semi-active bump leveler, friction is adopted, the magnetostriction unit is small, the requirement for a peripheral power amplifier is reduced, the rigidity and the damping are adjustable, vibration absorption frequency bands can be widened, and the semi-active bump leveler adapts to different working conditions.

Description

technical field [0001] The invention relates to a vibration absorber, specifically a semi-active vibration absorber. Background technique [0002] In the field of vibration control engineering, dynamic vibration absorbers are commonly used to suppress the vibration of a certain frequency of the system. The working principle of the dynamic vibration absorber is to attach a structure with mass and stiffness to a specific part of the system. When the total energy input by the excitation source to the system including the additional structure remains constant, the original system and the vibration absorber will be at each frequency. The sum of the absorbed energy also remains the same. When the motion energy of the vibration absorber reaches the maximum value (resonance) at a certain frequency, the motion energy of the original system at this frequency reaches the minimum value correspondingly, which plays the role of "vibration absorption". The working principle of the vibrat...

AI Technical Summary

Problems solved by technology

The previous mechanical frequency adjustable dynamic vibration absorber has the disadvantages of large size and static mass, and it is difficult to be practically applied.

Smart material type technology is advanced, but the stability is low

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