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Comprehensive modeling of an ERF in squeeze and shear mode

Norrick, Nicklas and Bauer, Jens and Dohnal, Fadi (2011):
Comprehensive modeling of an ERF in squeeze and shear mode.
In: Proceedings of the 5th ECCOMAS Thematic Conference on Smart Structures and Materials (SMART'11), pp. 138-146,
Saarbrücken, Deutschland, 5th ECCOMAS Thematic Conference on Smart Structures and Materials (SMART'11), Saarbrücken, Deutschland, 06.-08. Jul. 2011, [Conference or Workshop Item]

Abstract

A test facility was designed to perform measurements of a specific electrorheological fluid in squeeze and shear mode. This device allows measuring the dynamic response of the fluid under various excitation conditions. Dense measurement grids at harmonic excitation are collected in dependency of the excitation frequency, the displacement amplitude and the applied electric field. Based on these measurement cycles, a material model for squeeze and shear mode is proposed and its corresponding model parameters are identified within this parameter space. The fitted model is benchmarked against the measurement data and is capable of resembling the fluid’s dynamic properties at harmonic excitation; including transitions between Bingham-like and visco-elastic material behavior. However, clear trends within the parameter space cannot be stated for all model parameters. This prevents the extension of the identification results to predict the fluid behaviour at transient excitation and is subject to ongoing research fostering the further developments of ERF-devices.

Item Type: Conference or Workshop Item
Erschienen: 2011
Creators: Norrick, Nicklas and Bauer, Jens and Dohnal, Fadi
Title: Comprehensive modeling of an ERF in squeeze and shear mode
Language: English
Abstract:

A test facility was designed to perform measurements of a specific electrorheological fluid in squeeze and shear mode. This device allows measuring the dynamic response of the fluid under various excitation conditions. Dense measurement grids at harmonic excitation are collected in dependency of the excitation frequency, the displacement amplitude and the applied electric field. Based on these measurement cycles, a material model for squeeze and shear mode is proposed and its corresponding model parameters are identified within this parameter space. The fitted model is benchmarked against the measurement data and is capable of resembling the fluid’s dynamic properties at harmonic excitation; including transitions between Bingham-like and visco-elastic material behavior. However, clear trends within the parameter space cannot be stated for all model parameters. This prevents the extension of the identification results to predict the fluid behaviour at transient excitation and is subject to ongoing research fostering the further developments of ERF-devices.

Title of Book: Proceedings of the 5th ECCOMAS Thematic Conference on Smart Structures and Materials (SMART'11)
Place of Publication: Saarbrücken, Deutschland
Divisions: 16 Department of Mechanical Engineering > Institute of Applied Dynamics (AD)
16 Department of Mechanical Engineering
Event Title: 5th ECCOMAS Thematic Conference on Smart Structures and Materials (SMART'11)
Event Location: Saarbrücken, Deutschland
Event Dates: 06.-08. Jul. 2011
Date Deposited: 18 Jul 2011 14:23
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