Experimental characterisation of dry friction isolators for shock and vibration
Abstract Shock and vibration are a source of failures in harsh environments such as military, naval and aerospace applications; thus, the use of vibration isolators is extended. Cable isolators are known for their high-energy storage and dissipation properties making them suitable for shock isola...
| Autores principales: | , |
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| Formato: | Artículo |
| Lenguaje: | inglés |
| Publicado: |
2017
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| Materias: | |
| Acceso en línea: | http://eprints.uanl.mx/18197/1/486.pdf |
| _version_ | 1824415165001498624 |
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| author | Tapia González, Pablo Ernesto Ledezma Ramírez, Diego Francisco |
| author_facet | Tapia González, Pablo Ernesto Ledezma Ramírez, Diego Francisco |
| author_sort | Tapia González, Pablo Ernesto |
| collection | Repositorio Institucional |
| description | Abstract
Shock and vibration are a source of failures in harsh environments such as military, naval and aerospace applications; thus,
the use of vibration isolators is extended. Cable isolators are known for their high-energy storage and dissipation
properties making them suitable for shock isolation and low frequency vibration. Such isolators present nonlinear
stiffness in different directions such as compression, roll and shear, as well as dry friction damping. Although their
use is extended, the knowledge regarding their dynamic response under shock loading is very limited. This work presents
an overview of the vibration and shock isolation performance of several cable isolators under axial loading. The main
contribution of the paper is to investigate and discuss the shock response of the isolators when subjected to pulses of
different durations, finding improved isolation performance when compared to an equivalent linear system. Furthermore,
a mathematical model based on a Duffing oscillator is proposed as a first approximation, in order to reflect the nonlinear
stiffness and predict the shock response, thus facilitating further design and selection of improved shock isolation
systems.
Keywords
Shock, wire rope, isolation, damping, vibration isolation |
| format | Article |
| id | eprints-18197 |
| institution | UANL |
| language | English |
| publishDate | 2017 |
| record_format | eprints |
| spelling | eprints-181972020-06-10T17:11:20Z http://eprints.uanl.mx/18197/ Experimental characterisation of dry friction isolators for shock and vibration Tapia González, Pablo Ernesto Ledezma Ramírez, Diego Francisco TJ Ingeniería Mecánica Abstract Shock and vibration are a source of failures in harsh environments such as military, naval and aerospace applications; thus, the use of vibration isolators is extended. Cable isolators are known for their high-energy storage and dissipation properties making them suitable for shock isolation and low frequency vibration. Such isolators present nonlinear stiffness in different directions such as compression, roll and shear, as well as dry friction damping. Although their use is extended, the knowledge regarding their dynamic response under shock loading is very limited. This work presents an overview of the vibration and shock isolation performance of several cable isolators under axial loading. The main contribution of the paper is to investigate and discuss the shock response of the isolators when subjected to pulses of different durations, finding improved isolation performance when compared to an equivalent linear system. Furthermore, a mathematical model based on a Duffing oscillator is proposed as a first approximation, in order to reflect the nonlinear stiffness and predict the shock response, thus facilitating further design and selection of improved shock isolation systems. Keywords Shock, wire rope, isolation, damping, vibration isolation 2017 Article PeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/18197/1/486.pdf http://eprints.uanl.mx/18197/1.haspreviewThumbnailVersion/486.pdf Tapia González, Pablo Ernesto y Ledezma Ramírez, Diego Francisco (2017) Experimental characterisation of dry friction isolators for shock and vibration. Journal of Low Frequency Noise, Vibration and Active Control, 36 (1). pp. 83-95. ISSN 1461-3484 http://doi.org/10.1177/0263092317693509 doi:10.1177/0263092317693509 |
| spellingShingle | TJ Ingeniería Mecánica Tapia González, Pablo Ernesto Ledezma Ramírez, Diego Francisco Experimental characterisation of dry friction isolators for shock and vibration |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | Experimental characterisation of dry friction isolators for shock and vibration |
| title_full | Experimental characterisation of dry friction isolators for shock and vibration |
| title_fullStr | Experimental characterisation of dry friction isolators for shock and vibration |
| title_full_unstemmed | Experimental characterisation of dry friction isolators for shock and vibration |
| title_short | Experimental characterisation of dry friction isolators for shock and vibration |
| title_sort | experimental characterisation of dry friction isolators for shock and vibration |
| topic | TJ Ingeniería Mecánica |
| url | http://eprints.uanl.mx/18197/1/486.pdf |
| work_keys_str_mv | AT tapiagonzalezpabloernesto experimentalcharacterisationofdryfrictionisolatorsforshockandvibration AT ledezmaramirezdiegofrancisco experimentalcharacterisationofdryfrictionisolatorsforshockandvibration |