Compound sound barrier structure based on photonic crystals
A phononic crystal and sound barrier technology, applied in noise absorbing devices, buildings, etc., can solve the problems of poor noise reduction effect at medium and low frequencies, single structure of the sound barrier, insufficient overall noise reduction ability, etc. simple structure
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
specific Embodiment approach 2
[0042] Specific implementation mode two: combination figure 1 Note that the round holes on the first-level sound-absorbing panel 1, the second-level sound-absorbing panel 2, and the third-level sound-absorbing panel 3 are equipped with cylindrical Bragger-type phononic crystal sound-absorbing components 5, 6, and 7 that match the round holes; On the four-stage sound-absorbing panel 4, the tubular cylindrical local resonant phononic crystal sound-absorbing components 8 and 9 are uniformly and periodically installed. With such arrangement, the connection is convenient and reliable, and it is convenient to use.
[0043] Preferably, the scatterer 10 is an annular sheet structure matching the circular through holes on the respective cylinders 11 . Such setting facilitates processing, and at the same time, the period number of the periodic material scatterer is also greatly increased, and the sound absorption effect in the band gap is significantly improved.
[0044] Preferably, t...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com