Generic Vibration question

CARVIBRATIONS

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BMW

I am a student working on a BMW bumper project, I was wondering if anyone can tell me what range of frequencies a car experiences during normal conditions of operation.
I will greatly appreciate if you can also point out to some technical paper pointed on the net or information of some kind.

Thank you,
Vish

6 Replies

SERVICE WRITER

MECHANIC
9,123 POSTS

Not sure I can help or not but,

What is "normal"?

You'll have to pardon my ignorance, but a little clearer explanation of "range of frequencies" may help.

I would contact ride control companies such as moog, monroe, gabriel perhaps?

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Tuesday, January 30th, 2007 AT 6:32 PM

2CARPRO JACK

MECHANIC
11,533 POSTS

Google "Reed Tachometer" It is a device that records frequencies in vehicles to help determine noises that cant be found otherwise. Saw it in use at GM training center, pretty neat but not real affordable for the average shop

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Wednesday, January 31st, 2007 AT 7:51 AM

CARVIBRATIONS

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I am trying to theorize a piezoelectric sensor which will respond to the vibrations of the car bumper. To design one such sensor I would like to know if anyone has measured low audible frequencies that we sometimes hear due to the road conditions otherwise due to the general engine vibrations. The piezoelectric sensor I am designing will respond to such vibrations and send a charge signal which will be later converted to some kind of useful voltage.

Please let me know if I am still not clear. Thanks for replying

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Thursday, February 1st, 2007 AT 12:05 PM

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