Improvement of comfort in suspension seats with a pneumatic negative stiffness system

This paper presents a Negative Stiffness System (NSS) for vibration isolation and comfort improvement of vehicle seats, which enhances the performance of optimized traditional passive seat suspensions. The NSS is based on a set of two Pneumatic Linear Actuators (PLAs) added to a seat supported by a...

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Autores: Palomares Novalbos, Eduardo, Morales Robredo, Ángel Luis, Nieto Quijorna, Antonio Javier, Chicharro Higuera, José Manuel, Pintado Sanjuán, Publio
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/39951
Acceso en línea:https://hdl.handle.net/10578/39951
Access Level:acceso abierto
Palabra clave:Negative stiffness system
Suspension seat
Vibration isolation
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spelling Improvement of comfort in suspension seats with a pneumatic negative stiffness systemPalomares Novalbos, EduardoMorales Robredo, Ángel LuisNieto Quijorna, Antonio JavierChicharro Higuera, José ManuelPintado Sanjuán, PublioNegative stiffness systemSuspension seatVibration isolationThis paper presents a Negative Stiffness System (NSS) for vibration isolation and comfort improvement of vehicle seats, which enhances the performance of optimized traditional passive seat suspensions. The NSS is based on a set of two Pneumatic Linear Actuators (PLAs) added to a seat supported by a pneumatic spring. One end of each PLA is joined to the seat while the other end is joined to the vehicle frame. In static conditions, the PLAs remain horizontal, whereas in dynamic conditions, their vertical forces work against the pneumatic spring, reducing the overall dynamic stiffness and improving passenger comfort. The paper presents a stability analysis of the highly nonlinear dynamic system, as well as the numerical determination of the optimum PLA pressure for a given passenger mass that maximises comfort without instabilities. Finally, the performance of the proposed NSS is compared to that of a traditionally optimized passive seat suspension via simulations of an eight-degree-of-freedom vehicle model traversing several road profiles and speed bumps. Comfort improvements between 10% and 35% are found in all tests considered.MDPI202420242020info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://hdl.handle.net/10578/39951reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésinfo:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/399512026-05-27T07:36:41Z
dc.title.none.fl_str_mv Improvement of comfort in suspension seats with a pneumatic negative stiffness system
title Improvement of comfort in suspension seats with a pneumatic negative stiffness system
spellingShingle Improvement of comfort in suspension seats with a pneumatic negative stiffness system
Palomares Novalbos, Eduardo
Negative stiffness system
Suspension seat
Vibration isolation
title_short Improvement of comfort in suspension seats with a pneumatic negative stiffness system
title_full Improvement of comfort in suspension seats with a pneumatic negative stiffness system
title_fullStr Improvement of comfort in suspension seats with a pneumatic negative stiffness system
title_full_unstemmed Improvement of comfort in suspension seats with a pneumatic negative stiffness system
title_sort Improvement of comfort in suspension seats with a pneumatic negative stiffness system
dc.creator.none.fl_str_mv Palomares Novalbos, Eduardo
Morales Robredo, Ángel Luis
Nieto Quijorna, Antonio Javier
Chicharro Higuera, José Manuel
Pintado Sanjuán, Publio
author Palomares Novalbos, Eduardo
author_facet Palomares Novalbos, Eduardo
Morales Robredo, Ángel Luis
Nieto Quijorna, Antonio Javier
Chicharro Higuera, José Manuel
Pintado Sanjuán, Publio
author_role author
author2 Morales Robredo, Ángel Luis
Nieto Quijorna, Antonio Javier
Chicharro Higuera, José Manuel
Pintado Sanjuán, Publio
author2_role author
author
author
author
dc.subject.none.fl_str_mv Negative stiffness system
Suspension seat
Vibration isolation
topic Negative stiffness system
Suspension seat
Vibration isolation
description This paper presents a Negative Stiffness System (NSS) for vibration isolation and comfort improvement of vehicle seats, which enhances the performance of optimized traditional passive seat suspensions. The NSS is based on a set of two Pneumatic Linear Actuators (PLAs) added to a seat supported by a pneumatic spring. One end of each PLA is joined to the seat while the other end is joined to the vehicle frame. In static conditions, the PLAs remain horizontal, whereas in dynamic conditions, their vertical forces work against the pneumatic spring, reducing the overall dynamic stiffness and improving passenger comfort. The paper presents a stability analysis of the highly nonlinear dynamic system, as well as the numerical determination of the optimum PLA pressure for a given passenger mass that maximises comfort without instabilities. Finally, the performance of the proposed NSS is compared to that of a traditionally optimized passive seat suspension via simulations of an eight-degree-of-freedom vehicle model traversing several road profiles and speed bumps. Comfort improvements between 10% and 35% are found in all tests considered.
publishDate 2020
dc.date.none.fl_str_mv 2020
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10578/39951
url https://hdl.handle.net/10578/39951
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:RUIdeRA. Repositorio Institucional de la UCLM
instname:Universidad de Castilla-La Mancha
instname_str Universidad de Castilla-La Mancha
reponame_str RUIdeRA. Repositorio Institucional de la UCLM
collection RUIdeRA. Repositorio Institucional de la UCLM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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