Design a component based on Grms value

[cmtalati]

Hi !

I designed a casting bracket, and got it tested , mounted on engine, Results show me Grms values of X, Y, Z directions.

I understand that X value is high , and i need to reduce that by changing my design..

Dont know how to go about it .. any BigBro can help me in this ? so soory for such a question !!

 

[IRstuff]

Can't really help if you can't really describe your problem. Do you have a resonance, or what?

Is this for school?

TTFN

FAQ731-376
Chinese prisoner wins Nobel Peace Prize

 

[cmtalati]

yes its resonance !see the image

http://files.engineering.com/getfile.aspx?folder=7b1da5e6-1c87-4590-8701-e4b607f99706&file=1.JPG

 

[IRstuff]

Are we supposed to guess what the different curves mean?

TTFN

FAQ731-376
Chinese prisoner wins Nobel Peace Prize

 

[cmtalati]

its the Order !

 

[IRstuff]

Is this for school?

TTFN

FAQ731-376
Chinese prisoner wins Nobel Peace Prize

 

[GregLocock]

Well, you might try stiffneing the brakcet, or picking up more mounting bolts. Trouble is 640 Hz is already pretty stiff.

To be honest 4g isn't enough to get excited about.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

 

[PriamEngineering]

Three things:
What is the bare bracket natural frequency?
I dunno what kind of engine this is but the orders seem a bit strange.
You can live with resonance if you understand the stresses at resonance. What are they like?

http://www.priamengineering.co.uk