Variable Volumetric Stiffness Fluid Mount Design

Passive fluid mounts are commonly used in the automotive and aerospace applications to isolate the cabin from the engine noise and vibration. Due to manufacturing and material variabilities, no two identical fluid mount designs act the same. So, fluid mounts are tuned one by one before it is shipped...

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Main Authors: Nader Vahdati, Mehdi Ahmadian
Format: Article
Language:English
Published: Wiley 2004-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2004/751042
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author Nader Vahdati
Mehdi Ahmadian
author_facet Nader Vahdati
Mehdi Ahmadian
author_sort Nader Vahdati
collection DOAJ
description Passive fluid mounts are commonly used in the automotive and aerospace applications to isolate the cabin from the engine noise and vibration. Due to manufacturing and material variabilities, no two identical fluid mount designs act the same. So, fluid mounts are tuned one by one before it is shipped out to customers. In some cases, for a batch of fluid mounts manufactured at the same time, one is tuned and the rest is set to the same settings. In some cases they are shipped as is with its notch frequency not being in its most optimum location. Since none of the passive fluid mount parameters are controllable, the only way to tune the mount is to redesign the mount by changing fluid, changing inertia track length or diameter, or changing rubber stiffness. This trial and error manufacturing process is very costly. To reduce the fluid mount notch frequency tuning cycle time, a new fluid mount design is proposed. In this new fluid mount design, the notch frequency can be easily modified without the need for any redesigns. In this paper, the new design concept, and its mathematical model and simulation results will be presented.
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series Shock and Vibration
spelling doaj-art-a7de9a6e73b04077a22bbce14ad3ed232025-02-03T01:31:24ZengWileyShock and Vibration1070-96221875-92032004-01-01111213210.1155/2004/751042Variable Volumetric Stiffness Fluid Mount DesignNader Vahdati0Mehdi Ahmadian1School of Mechanical and Production Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, SingaporeDepartment of Mechanical Engineering, Virginia Polytechnic Institute, 123 Randolph Hall, Blacksburg, VA 24061, USAPassive fluid mounts are commonly used in the automotive and aerospace applications to isolate the cabin from the engine noise and vibration. Due to manufacturing and material variabilities, no two identical fluid mount designs act the same. So, fluid mounts are tuned one by one before it is shipped out to customers. In some cases, for a batch of fluid mounts manufactured at the same time, one is tuned and the rest is set to the same settings. In some cases they are shipped as is with its notch frequency not being in its most optimum location. Since none of the passive fluid mount parameters are controllable, the only way to tune the mount is to redesign the mount by changing fluid, changing inertia track length or diameter, or changing rubber stiffness. This trial and error manufacturing process is very costly. To reduce the fluid mount notch frequency tuning cycle time, a new fluid mount design is proposed. In this new fluid mount design, the notch frequency can be easily modified without the need for any redesigns. In this paper, the new design concept, and its mathematical model and simulation results will be presented.http://dx.doi.org/10.1155/2004/751042
spellingShingle Nader Vahdati
Mehdi Ahmadian
Variable Volumetric Stiffness Fluid Mount Design
Shock and Vibration
title Variable Volumetric Stiffness Fluid Mount Design
title_full Variable Volumetric Stiffness Fluid Mount Design
title_fullStr Variable Volumetric Stiffness Fluid Mount Design
title_full_unstemmed Variable Volumetric Stiffness Fluid Mount Design
title_short Variable Volumetric Stiffness Fluid Mount Design
title_sort variable volumetric stiffness fluid mount design
url http://dx.doi.org/10.1155/2004/751042
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