Multi-steady-state compliant Bricard mechanism and steady-state analysis method thereof

Abstract

The invention discloses a multi-steady-state compliant Bricard mechanism and a steady-state analysis method thereof. The multi-steady-state compliant Bricard mechanism is formed by connecting a plurality of Bricard basic units in an end-to-end manner so as to form an annular closed structure; each Bricard basic unit comprises two flexible hinges and two rigid connecting parts, which the two flexible hinges are provided with different planes orthogonal to each other, and two rigid connecting parts are used for enabling the flexible hinges to be connected; every two flexible hinges are connectedthrough one rigid connecting part; one flexible hinge is connected to one flexible hinge of the adjacent Bricard basic unit through the other rigid connecting part; the two rigid connecting parts inthe same Bricard basic unit have to be equal in length; but the rigid connecting parts of different Bricard basic units do not have to be equal in length. The multi-steady-state compliant Bricard mechanism and the steady-state analysis method thereof have the advantages that the continuous rotation, multiple steady states and the like of a compliant triple Bricard mechanism can be achieved, meanwhile, the mechanism topology is changeable, the unit number is adjustable, and implementation and popularization are easy.

Description

Technical field [0001] The invention relates to the technical field of compliance mechanisms, in particular to a multi-stable compliance Bricard mechanism and a steady-state analysis method thereof. Background technique [0002] The compliant mechanism refers to a device that transmits input force and displacement through elastic deformation. The compliant 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] In the development process of the compliant mechanism, some mechanisms are found to have one or more stable positions in motion. This phenomenon is called the stability of the compliant mechanism, and the state of these mechanisms in a stable position is called the stability of the compliant mechanism. Therefore, the steady-state positions of these institutions are often located at the minimum value of the potential energy of the institutions. According to the stea...

AI Technical Summary

Problems solved by technology

The triple Bricard compliant 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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