Abstract
Low-frequency vibration control is a key technology in the vibration control of pipe systems. The existing related research on band gap mechanisms suggests that gigantic structures are required for the Bragg-type band gaps to control low-frequency vibration. Thus, the application of Bragg-type phononic crystal pipe is greatly restricted. However, the suggestion given by the existing Bragg-type band gap mechanisms is based on simple cell structure and material composition. The cell structures of Bragg-type phononic crystal pipes are also simple and the potential action of the cell has not been fully excavated at present. In this paper, several new cells with relatively complex structure are designed to study the influence on the Bragg-type band gap characteristics. Band structures of the Bragg-type phononic crystal pipes with new cells are calculated via a combination of periodic structure theory and finite element method. Compared to the classical phononic crystal pipe, when a same lattice constant is adopted, the phononic crystal pipes with new cells obtain lower frequency band gaps or widen the low-frequency band gaps.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
