The Naked Scientists
  • Login
  • Register
  • Podcasts
      • The Naked Scientists
      • eLife
      • Naked Genetics
      • Naked Astronomy
      • In short
      • Naked Neuroscience
      • Ask! The Naked Scientists
      • Question of the Week
      • Archive
      • Video
      • SUBSCRIBE to our Podcasts
  • Articles
      • Science News
      • Features
      • Interviews
      • Answers to Science Questions
  • Get Naked
      • Donate
      • Do an Experiment
      • Science Forum
      • Ask a Question
  • About
      • Meet the team
      • Our Sponsors
      • Site Map
      • Contact us

User menu

  • Login
  • Register
  • Home
  • Help
  • Search
  • Tags
  • Member Map
  • Recent Topics
  • Login
  • Register
  1. Naked Science Forum
  2. Non Life Sciences
  3. Physics, Astronomy & Cosmology
  4. Why is there a noise in this spring assembly?
« previous next »
  • Print
Pages: [1]   Go Down

Why is there a noise in this spring assembly?

  • 11 Replies
  • 2192 Views
  • 0 Tags

0 Members and 1 Guest are viewing this topic.

Offline ddubahshi (OP)

  • First timers
  • *
  • 4
  • Activity:
    0%
  • Naked Science Forum Newbie
    • View Profile
Why is there a noise in this spring assembly?
« on: 07/02/2018 11:51:48 »
Why is there a Unwanted Noise generated whenever a Load or Force is applied on a Compression or Tensile Spring?

What causes this Noise and How can this be eliminated?
« Last Edit: 10/02/2018 10:01:03 by chris »
Logged
 



Offline barbarara

  • First timers
  • *
  • 3
  • Activity:
    0%
  • Naked Science Forum Newbie
    • View Profile
    • https://www.thenakedscientists.com/forum/index.php?PHPSESSID=jsoa07foci2872rud7ns3cthh6&
Re: Why is there a noise in this spring assembly?
« Reply #1 on: 07/02/2018 12:34:28 »
Maybe, gravity and friction force?) Try listening to music))
Logged
 

Offline Colin2B

  • Global Moderator
  • Naked Science Forum King!
  • ********
  • 5275
  • Activity:
    11.5%
  • Thanked: 439 times
    • View Profile
Re: Why is there a noise in this spring assembly?
« Reply #2 on: 07/02/2018 13:19:26 »
Usually due to parts of the spring rubbing together. Try oil or grease.
Logged
and the misguided shall lead the gullible,
the feebleminded have inherited the earth.
 

Offline Bill S

  • Naked Science Forum King!
  • ******
  • 3631
  • Activity:
    0%
  • Thanked: 108 times
    • View Profile
Re: Why is there a noise in this spring assembly?
« Reply #3 on: 07/02/2018 14:10:31 »
Could molecular friction be involved?  What level of noise are we considering?
Logged
There never was nothing.
 

Offline Colin2B

  • Global Moderator
  • Naked Science Forum King!
  • ********
  • 5275
  • Activity:
    11.5%
  • Thanked: 439 times
    • View Profile
Re: Why is there a noise in this spring assembly?
« Reply #4 on: 07/02/2018 14:38:20 »
Quote from: Bill S on 07/02/2018 14:10:31
What level of noise are we considering?
Think bed springs. I’m sure you’ve made them squeak a few times  ;)
I would expect crystal or molecular friction to be much quieter unless you are getting close to fracture.

I think we are talking about parts of spring rubbing either on other parts of the spring or the attachment points.
Logged
and the misguided shall lead the gullible,
the feebleminded have inherited the earth.
 



Offline ddubahshi (OP)

  • First timers
  • *
  • 4
  • Activity:
    0%
  • Naked Science Forum Newbie
    • View Profile
Re: Why is there a noise in this spring assembly?
« Reply #5 on: 07/02/2018 14:47:09 »
At present Noise Level is not verified, but we may define this type of Noise as Squeaky. There is no adjacent Parts for Friction.

In NVH there are different type of Noise like Squeak, Rattling, Tick Noise, Click Noise..
Logged
 

Offline Colin2B

  • Global Moderator
  • Naked Science Forum King!
  • ********
  • 5275
  • Activity:
    11.5%
  • Thanked: 439 times
    • View Profile
Re: Why is there a noise in this spring assembly?
« Reply #6 on: 07/02/2018 15:00:44 »
Quote from: ddubahshi on 07/02/2018 14:47:09
There is no adjacent Parts for Friction..
So how are you compressing or extending it?
Photo?
Logged
and the misguided shall lead the gullible,
the feebleminded have inherited the earth.
 

Offline ddubahshi (OP)

  • First timers
  • *
  • 4
  • Activity:
    0%
  • Naked Science Forum Newbie
    • View Profile
Re: Why is there a noise in this spring assembly?
« Reply #7 on: 09/02/2018 11:06:50 »
Load is applied in line with the axis of Spring. One side of the Spring is fixed and the other side is loaded by means of Cylinder.

* Capture.JPG (27.69 kB . 318x441 - viewed 2420 times)
« Last Edit: 10/02/2018 10:00:23 by chris »
Logged
 

Offline Colin2B

  • Global Moderator
  • Naked Science Forum King!
  • ********
  • 5275
  • Activity:
    11.5%
  • Thanked: 439 times
    • View Profile
Re: Why is there a noise in this spring assembly?
« Reply #8 on: 09/02/2018 11:17:32 »
Cant see your attachment.
If one side of spring is fixed and other in contact with cylinder then you have 2 possible areS of friction and squeaking.

Ok, can see it now. You clearly have substantial contact between the upper and lower plates and the spring, I would start there.
What is the green colour? Paint or a plastic coating?
« Last Edit: 09/02/2018 11:20:22 by Colin2B »
Logged
and the misguided shall lead the gullible,
the feebleminded have inherited the earth.
 



Offline ddubahshi (OP)

  • First timers
  • *
  • 4
  • Activity:
    0%
  • Naked Science Forum Newbie
    • View Profile
Re: Why is there a noise in this spring assembly?
« Reply #9 on: 09/02/2018 15:21:37 »
The given Image is a replica and not in actual. However the real application is same or similar in loading points and application of load. The actual application Part has a Trivalent Electro-Plating.

The Noise generated is not due to contact of the Load application points. For instance consider that the Points are always in contact. The Noise is like crunching/ sqeeking when the Spring is been loaded to achieve its solid length.

Application of Oil/ Grease sometime does reduce the Noise but it does not seem to be correct. How application of lubricant on the outside surface reduce the Noise generated from within the Part.
Logged
 

Offline Colin2B

  • Global Moderator
  • Naked Science Forum King!
  • ********
  • 5275
  • Activity:
    11.5%
  • Thanked: 439 times
    • View Profile
Re: Why is there a noise in this spring assembly?
« Reply #10 on: 10/02/2018 15:28:33 »
Quote from: ddubahshi on 09/02/2018 15:21:37
The Noise generated is not due to contact of the Load application points. For instance consider that the Points are always in contact. The Noise is like crunching/ sqeeking when the Spring is been loaded to achieve its solid length.
The ends are always in contact, but the contact area does move. Consider that when compressed your spring will increase in diameter, hence the ends will move/twist relative to the pressure plates.

Quote from: ddubahshi on 09/02/2018 15:21:37
Application of Oil/ Grease sometime does reduce the Noise but it does not seem to be correct. How application of lubricant on the outside surface reduce the Noise generated from within the Part.
Where did you apply the grease? Between the ends of the springs and the pressure plates?
Logged
and the misguided shall lead the gullible,
the feebleminded have inherited the earth.
 

Offline yor_on

  • Naked Science Forum GOD!
  • *******
  • 28573
  • Activity:
    100%
  • Thanked: 65 times
  • (Ah, yes:) *a table is always good to hide under*
    • View Profile
Re: Why is there a noise in this spring assembly?
« Reply #11 on: 23/02/2018 16:41:53 »
Can't you consider the spring as a string under tension, aka a guitar string? Then, if you apply a force on the guitar string it vibrates.
Logged
"BOMB DISPOSAL EXPERT. If you see me running, try to keep up."
 



  • Print
Pages: [1]   Go Up
« previous next »
Tags:
 

Similar topics (5)

What's The "Noise" You Can See When You Close Your Eyes ?

Started by neilepBoard Physiology & Medicine

Replies: 8
Views: 9539
Last post 21/09/2012 12:55:51
by RD
How do "spring hammers" work and why are they better?

Started by jbpostalBoard Technology

Replies: 2
Views: 4016
Last post 14/06/2008 21:57:25
by qazibasit
Noise Induce Hearing Loss (NIHL) : Is the correct decibel measure being used?

Started by RiderScanBoard Physiology & Medicine

Replies: 4
Views: 4256
Last post 24/04/2014 13:19:29
by RiderScan
7 comets added to 3D simulation of solar system (Siding Spring, Lovejoy, Halley,

Started by MitoBoard Physics, Astronomy & Cosmology

Replies: 0
Views: 2058
Last post 21/01/2014 12:43:53
by Mito
Why can teenagers, but not adults, hear high pitched noise from bug zappers?

Started by CarolynBoard General Science

Replies: 15
Views: 19942
Last post 13/02/2018 08:55:10
by Zer0
There was an error while thanking
Thanking...
  • SMF 2.0.15 | SMF © 2017, Simple Machines
    Privacy Policy
    SMFAds for Free Forums
  • Naked Science Forum ©

Page created in 0.137 seconds with 63 queries.

  • Podcasts
  • Articles
  • Get Naked
  • About
  • Contact us
  • Advertise
  • Privacy Policy
  • Subscribe to newsletter
  • We love feedback

Follow us

cambridge_logo_footer.png

©The Naked Scientists® 2000–2017 | The Naked Scientists® and Naked Science® are registered trademarks created by Dr Chris Smith. Information presented on this website is the opinion of the individual contributors and does not reflect the general views of the administrators, editors, moderators, sponsors, Cambridge University or the public at large.