Energy collecting device of nonlinear spring

Abstract

The invention relates to an energy collecting device of a nonlinear spring. The energy collecting device comprises a cantilever beam, contact surfaces, a mass block and fixing bolts, wherein the contact surfaces are curved surfaces with certain variable curvature, and are symmetrically arranged in an up-down direction, the curvature of the curved surfaces is gradually changed in a length direction, and the curvature of a section at the root of the cantilever beam is infinite and is gradually decreased in the length direction; the cantilever beam is positioned between the two contact surfaces which are in up-down arrangement. Under the effect of the equivalent load of the mass block at the end part, bending deflection can be produced, and then the cantilever beam can be in immediate contact with the curved surfaces, so that end displacement and load can have nonlinear relation, and nonlinear restoring force is produced; besides, through the adoption of the contact surfaces with the variable curvature, the adaptability and the robustness of the energy collecting device of the nonlinear spring for different excitation spectrums are also improved.

Description

technical field [0001] The invention relates to a nonlinear spring energy collection device, through which a cantilever beam is in contact with a contact surface, the end displacement and the equivalent load of a mass block are in a nonlinear relationship, and a nonlinear restoring force is generated, which is similar to a nonlinear spring energy collection device, thereby It can well transfer energy from one part of the main structure to another additional part, and belongs to the field of vibration control of civil structures (including high-rise buildings, high-rise structures and bridge structures, etc.). Background technique [0002] Energy can be transferred from one part of a structure to another using a number of technical means, such as energy harvesting from environmental vibrations, energy harvesting from external loads and passive control or suppression of mechanical instabilities. In particular, energy harvesting is the process of converting energy in the surrou...

AI Technical Summary

Problems solved by technology

In fact this inherently nonlinear spring does not have an excellent linear frequency

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