Band gap adjustable type phononic crystal vibration isolator based on shape memory alloy

A phononic crystal and memory alloy technology, which is applied in the field of vibration isolators, can solve the problems of non-adjustable band gap, narrow vibration isolation frequency range and working space limitation of one-dimensional phononic crystal vibration isolators, so as to expand the vibration isolation frequency. or frequency range, outstanding vibration isolation effect, and low environmental requirements

Inactive Publication Date: 2014-11-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention is to solve the problem that the period number of the periodic material of the current one-dimensional phononic crystal vibration isolator is small, the vibration isolation effect is poor, the working space is limited and the ban

Method used

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  • Band gap adjustable type phononic crystal vibration isolator based on shape memory alloy
  • Band gap adjustable type phononic crystal vibration isolator based on shape memory alloy
  • Band gap adjustable type phononic crystal vibration isolator based on shape memory alloy

Examples

Experimental program
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Example Embodiment

[0017] Specific implementation mode 1: Combination Figure 1-Figure 3 as well as Figure 4 It is explained that a phononic crystal vibration isolator based on a shape memory alloy with an adjustable band gap in this embodiment includes a vibration input support 1, a side skin 2, an upper skin 3-1, a lower skin 3-2, and two High-level vibration isolation upper support 10, vibration output support 4, first-level vibration isolation lower support 17, three first-level vibration isolation phononic crystal support columns 13, three second-level vibration isolation phononic crystal support columns 11, three third-level vibration isolation Vibration isolation phononic crystal support column 12, three sets of primary vibration isolation shape memory alloy compaction drive components 14, three sets of secondary vibration isolation shape memory alloy compaction drive components 16, three sets of three-level vibration isolation shape memory alloy compaction Drive component 15, three groups...

Example Embodiment

[0025] Specific implementation manner two: combination figure 2 with image 3 It is explained that each group of first-level vibration isolation phononic crystal oscillator assembly 5, each group of second-level vibration isolation phononic crystal oscillator assembly 6 and each group of three-level vibration isolation phononic crystal oscillator assembly 7 of this embodiment are composed of multiple rings. The first vibration isolation phononic crystal oscillator 22 is composed of a plurality of circular second vibration isolation phononic crystal oscillators 23 in the same number as the first vibration isolation phononic crystal oscillator 22 of the circular ring shape. One vibration isolation phononic crystal oscillator 22 is made of aluminum, lead or copper, and each ring-shaped second vibration isolation phononic crystal oscillator 23 is made of epoxy resin or nitrile rubber; the first-level isolation phononic crystal oscillator The component 5, the second-level vibration ...

Example Embodiment

[0026] Specific implementation mode three: combination Figure 5 with Image 6 It is explained that each group of first-level vibration isolation phononic crystal oscillator assembly 5, each group of second-level vibration isolation phononic crystal oscillator assembly 6 and each group of three-level vibration isolation phononic crystal oscillator assembly 7 of this embodiment includes multiple local areas. Resonant phononic crystal local oscillator 21, each local resonant phononic crystal local oscillator 21 is a cylindrical structure with inner and outer double layers glued together; primary vibration isolation phononic crystal support column 13, secondary isolation Both the vibrator phononic crystal support column 11 and the three-stage vibration isolation phononic crystal support column 12 are glued with a plurality of local resonance type phononic crystal local oscillators 21 arranged periodically and equidistantly. With this arrangement, the overall local resonance type ph...

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Abstract

The invention discloses a band gap adjustable type phononic crystal vibration isolator based on shape memory alloy and relates to a vibration isolator. The band gap adjustable type phononic crystal vibration isolator based on shape memory alloy aims to solve the problems of existing one-dimensional phononic crystal vibration isolators that the periodicity of period materials is low, vibration isolating effect is poor, working space is limited, the band gap can not be adjusted, and the vibration isolation frequency range is narrow. The band gap adjustable type phononic crystal vibration isolator comprises a vibration input support, lateral skin, upper skin, lower skin, a secondary vibration isolation upper support, a vibration output support, a primary vibration isolation lower support, three primary vibration isolation phononic crystal support pillars, three secondary vibration isolation phononic crystal support pillars, three trinary vibration isolation phononic crystal support pillars, three sets of primary vibration isolation shape memory alloy compression driving components, three sets of secondary vibration isolation shape memory alloy compression driving components, three sets of trinary vibration isolation shape memory alloy compression driving components, three sets of primary vibration isolation phononic crystal components, three sets of seconday vibration isolation phononic crystal components and three sets of trinary vibration isolation phononic crystal components. The band gap adjustable type phononic crystal vibration isolator is used for vibration isolation and noise reduction.

Description

technical field [0001] The invention relates to a vibration isolator in the field of vibration isolation and noise reduction. Background technique [0002] There are various vibration problems in the machinery industry and other industrial sectors, many of which are harmful vibrations. Excessive vibration and noise caused by vibration will pollute the environment and damage people's health. [0003] People have made great progress in the study of photonic crystals. In view of the analogy between phononic crystals and photonic crystals, phononic crystals have gradually become a new research hotspot in the past ten years. An important feature of phononic crystals is their acoustic bandgap, that is, phononic crystals are functional materials or structures composed of two or more elastic media with periodic structure and elastic wave bandgap characteristics. When the elastic wave propagates in the phononic crystal, affected by its internal periodic structure, a special dispersi...

Claims

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Application Information

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IPC IPC(8): F16F7/00
Inventor 邓宗全赵浩江刘荣强郭宏伟史创
Owner HARBIN INST OF TECH
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