A multi-stable compliant mechanism and its steady-state analysis method

Abstract

The invention discloses a multi-stable compliant mechanism and its steady-state analysis method. It is composed of a plurality of basic units connected end to end in order to form a ring-shaped closed structure; each basic unit includes two mutually different fronts. The intersecting flexible hinge and two rigid connecting parts used to connect the flexible hinge, the two flexible hinges are connected through a rigid connecting part, and one of the flexible hinges is connected to a flexible hinge of the adjacent basic unit through the other rigid connecting part. For hinge connection, the lengths of the two rigid connection parts in the same basic unit must be equal, but the lengths of the rigid connection parts of different basic units are not necessarily equal. In addition to inheriting the advantages of continuous rotation and multi-stable states of the compliant triple mechanism, the present invention also has the advantages of variable mechanism topology, adjustable number of units, easy realization and popularization, and the like.

Description

technical field [0001] The invention relates to the technical field of compliance mechanisms, in particular to a multi-stable compliance mechanism and a steady-state analysis method thereof. Background technique [0002] A compliant mechanism refers to a device that transmits input force and displacement through elastic deformation. The compliance mechanism has the advantages of no gap, no lubrication, no assembly, high precision, high rigidity, etc., and has been widely used in various fields of life. [0003] During the development of compliant mechanisms, some mechanisms are found to have one or several stable positions during motion. This phenomenon is called the stability of compliant mechanisms, and the state in which these mechanisms are in stable positions is called the stability of compliant mechanisms. state, so the steady-state positions of these mechanisms are often located at the point of the minimum potential energy of the mechanism. According to the number o...

AI Technical Summary

Problems solved by technology

The triple compliant Bricard mechanism is limited by its fixed triangular mechanism topology, the design changes are less, the scope of application is limited, and it cannot meet all working conditions well.

When there are more than three units of the rotating tetrahedron, the mechanism becomes a multi-degree-of-freedom mechanism and the analysis is more complicated, so no one has studied it yet.

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