Parametric study of control of frequency banded behaviour of periodic pressurised composite structures
Periodic structures are very common in engineering, such as airplane fuselages and train rails. This periodicity has been observed to be the cause of banded frequency response after mechanical excitation. This response can be engineered so that noise and vibrations to be isolated or even annihilated...
| Main Authors: | , |
|---|---|
| Format: | Conference or Workshop Item |
| Published: |
2017
|
| Subjects: | |
| Online Access: | https://eprints.nottingham.ac.uk/45060/ |
| _version_ | 1848797059847553024 |
|---|---|
| author | Ampatzidis, Theofanis Chronopoulos, Dimitrios |
| author_facet | Ampatzidis, Theofanis Chronopoulos, Dimitrios |
| author_sort | Ampatzidis, Theofanis |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Periodic structures are very common in engineering, such as airplane fuselages and train rails. This periodicity has been observed to be the cause of banded frequency response after mechanical excitation. This response can be engineered so that noise and vibrations to be isolated or even annihilated. In addition to this, further methods of inducing band-gaps without weight penalty are of interest among the researchers. In this paper a parametric survey was conducted examining the impact of the core geometry and the pressure in the core cells on the suppression of the vibrations. An infinite composite sandwich beam with hollow and pressurised core cells as periodic band gap inducing factors was examined. The periodic theory was used to predict the effect of pressured core cells periodicity on wave propagation and band gaps generation. Three low order finite elements (FE) models were used in this survey, which consisted of a small section of the simple sandwich beam with homogeneous core, with hollow core and with pressurised hollow core |
| first_indexed | 2025-11-14T19:57:52Z |
| format | Conference or Workshop Item |
| id | nottingham-45060 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:57:52Z |
| publishDate | 2017 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-450602020-05-04T18:56:31Z https://eprints.nottingham.ac.uk/45060/ Parametric study of control of frequency banded behaviour of periodic pressurised composite structures Ampatzidis, Theofanis Chronopoulos, Dimitrios Periodic structures are very common in engineering, such as airplane fuselages and train rails. This periodicity has been observed to be the cause of banded frequency response after mechanical excitation. This response can be engineered so that noise and vibrations to be isolated or even annihilated. In addition to this, further methods of inducing band-gaps without weight penalty are of interest among the researchers. In this paper a parametric survey was conducted examining the impact of the core geometry and the pressure in the core cells on the suppression of the vibrations. An infinite composite sandwich beam with hollow and pressurised core cells as periodic band gap inducing factors was examined. The periodic theory was used to predict the effect of pressured core cells periodicity on wave propagation and band gaps generation. Three low order finite elements (FE) models were used in this survey, which consisted of a small section of the simple sandwich beam with homogeneous core, with hollow core and with pressurised hollow core 2017-07-23 Conference or Workshop Item PeerReviewed Ampatzidis, Theofanis and Chronopoulos, Dimitrios (2017) Parametric study of control of frequency banded behaviour of periodic pressurised composite structures. In: 24th International Congress on Sound and Vibration, 23-27 July 2017, London, UK. band gap wave finite elements vibrations pressurised composite structures https://www.iiav.org/archives_icsv_last/2017_icsv24/content/papers/papers/full_paper_280_20170413190622744.pdf |
| spellingShingle | band gap wave finite elements vibrations pressurised composite structures Ampatzidis, Theofanis Chronopoulos, Dimitrios Parametric study of control of frequency banded behaviour of periodic pressurised composite structures |
| title | Parametric study of control of frequency banded behaviour of periodic pressurised composite structures |
| title_full | Parametric study of control of frequency banded behaviour of periodic pressurised composite structures |
| title_fullStr | Parametric study of control of frequency banded behaviour of periodic pressurised composite structures |
| title_full_unstemmed | Parametric study of control of frequency banded behaviour of periodic pressurised composite structures |
| title_short | Parametric study of control of frequency banded behaviour of periodic pressurised composite structures |
| title_sort | parametric study of control of frequency banded behaviour of periodic pressurised composite structures |
| topic | band gap wave finite elements vibrations pressurised composite structures |
| url | https://eprints.nottingham.ac.uk/45060/ https://eprints.nottingham.ac.uk/45060/ |