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Entwicklung und Gestaltungspotenzial von Fahrzeugsitzen unter Einsatz dielektrischer Elastomeraktoren
Citation Link: https://doi.org/10.15480/882.1026
Other Titles
Development and Design Potential of Vehicle Seats using Dielectric Elastomer Actuators
Publikationstyp
Doctoral Thesis
Date Issued
2011
Sprache
German
Author(s)
Advisor
Title Granting Institution
Technische Universität Hamburg
Place of Title Granting Institution
Hamburg
Examination Date
2011-09-26
TORE-DOI
The aim of this work is, to develop a new free deformable area and its actuators. Based on mechanically active polymer compounds - dielectric elastomers - technical and aesthetic freedoms can be increased. A low density in combination with high activation strains are the advantages of the dielectric elastomer. This leads to flat and lightweight transducers for a free deformable area, which is shown on the basis of a new concept for an automotive seat.
Recently, the increasing functionality in car seats, especially in comfort, is achieved by use of manual and pneumatic adjustments or electric motors and gears. Hence, complexity, weight and the fuel consumption rise. Furthermore room for the car´s occupants decreases, due to the space taken by the adaptive seats.
Both, the technical and the user demands - user wishes - are part of the development process in this work. By means of mechanical, electrical, as well as chemical and electromechanical measurements the material properties of the dielectric elastomer are gathered. With respect to that, a new leafspring-actuator is designed.
Furthermore, arm-like structures of leafspring-actuators are engineered and tested for application in car seats. An analytical model describes the static behavior of the actuators, while finite element models are used as a tool for design and optimization of these active structures. Moreover, new ground for interior design, due to the modular build-up of the actuators can be broken, by almost identical expenditure of time and design effort.
With the help of a demonstrator, made from a thin plane of polyurethane foam,
supported by arms of leafspring-actuators, new ways of designing a car seat are
presented.
Recently, the increasing functionality in car seats, especially in comfort, is achieved by use of manual and pneumatic adjustments or electric motors and gears. Hence, complexity, weight and the fuel consumption rise. Furthermore room for the car´s occupants decreases, due to the space taken by the adaptive seats.
Both, the technical and the user demands - user wishes - are part of the development process in this work. By means of mechanical, electrical, as well as chemical and electromechanical measurements the material properties of the dielectric elastomer are gathered. With respect to that, a new leafspring-actuator is designed.
Furthermore, arm-like structures of leafspring-actuators are engineered and tested for application in car seats. An analytical model describes the static behavior of the actuators, while finite element models are used as a tool for design and optimization of these active structures. Moreover, new ground for interior design, due to the modular build-up of the actuators can be broken, by almost identical expenditure of time and design effort.
With the help of a demonstrator, made from a thin plane of polyurethane foam,
supported by arms of leafspring-actuators, new ways of designing a car seat are
presented.
Subjects
Dielektrische Elastomere
Aktoren
Autositz
smart materials
aktiver Werkstoff
Dielectric Elastomer
Actuators
DEA
Automotive Seat
smart material
DDC Class
620: Ingenieurwissenschaften
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2011_Dipl._Ing._Daniel_Jarr_Entwicklung_und_Gestaltungspotenzial_von_Fahrzeugsitzen_unter_Einsatz_dielektrischer_Elastomeraktoren.pdf
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