Chiral negative Poisson's ratio structure based on dielectric electroactive polymers

An electroactive polymer, negative Poisson's ratio technology, applied in electrostatic motors, generators/motors, electrostatic generators/motors, etc., can solve the problems of low driving voltage, difficult to apply energy-absorbing components, slow response, etc. Realize energy saving and environmental protection, reduce energy loss and improve the effect of energy absorption

Inactive Publication Date: 2017-10-20
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

Electroactive polymers can be mainly divided into two categories: ionic type and electric field type: ionic type electroactive polymers use chemical energy as a transition to realize the conversion between electrical

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  • Chiral negative Poisson's ratio structure based on dielectric electroactive polymers
  • Chiral negative Poisson's ratio structure based on dielectric electroactive polymers
  • Chiral negative Poisson's ratio structure based on dielectric electroactive polymers

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Embodiment Construction

[0054] In the present invention, the dielectric electroactive polymer is applied to the tendon part in the chiral negative Poisson's ratio structure, which can realize the real-time change of the chiral negative Poisson's ratio structure, so that it has different properties under different voltage or electric field excitation. Mechanical properties, and can simultaneously realize the integration, electronics, informatization and intelligence of elastic elements, vibration damping elements, sensor elements, actuator elements and energy recovery elements.

[0055] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0056] The invention discloses a chiral negative Poisson's ratio structure based on a dielectric electroactive polymer, which is formed by a chiral negative Poisson's ratio cell array;

[0057] The chiral negative Poisson's ratio cell comprises bones and at least three tendons, the bones ar...

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Abstract

The invention discloses a chiral negative Poisson's ratio structure based on dielectric electroactive polymers. The structure is formed by a chiral negative Poisson's ratio cell array, and the cells consist of bones and a plurality of tendons. The tendons are made of dielectric electroactive polymers, and are of a sandwich structure, sandwich materials are dielectric elastomers, two sides are flexible electrodes, and the Young's modulus of the bones is larger than that of tendon materials. The flexible electrodes of two sides of the tendons are connected with the positive electrode and the negative electrode of high voltage direct current power supplies, and the voltage and path open-circuit state are adjustable. The chiral negative Poisson's ratio cells are arrayed, and thus the chiral negative Poisson's ratio structure can be formed. Since the mechanical states and electrostatic states of the dielectric electroactive polymers are mutually coupled, mutual conversion between mechanical energy and electric energy can be realized, and functions of structure real-time variability, actuation, energy recovery and sensing of the chiral negative Poisson's ratio structure are realized.

Description

technical field [0001] The invention relates to a chiral negative Poisson's ratio structure, in particular to a chiral negative Poisson's ratio structure based on a dielectric electroactive polymer. Background technique [0002] The Negative Poisson's Ratio (NPR) structure is a new type of structure with unique mechanical properties. It expands laterally instead of contracting laterally when it is tensioned, so the material can bear the load more effectively, and the stiffness of the structure It will also increase linearly with the increase of load, so the negative Poisson's ratio structure can make full use of the mechanical properties of the material. The mechanical properties of the negative Poisson’s ratio structure are closely related to the mechanical properties and structural parameters of the materials used. After certain material and parameter design, the negative Poisson’s ratio structure can have excellent energy absorption efficiency and damping performance at t...

Claims

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Application Information

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IPC IPC(8): H02N1/00F16F15/02G01L1/00
CPCF16F15/02G01L1/00H02N1/00H02N1/002
Inventor 王源隆赵万忠周冠王春燕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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