Wow, this get's really deep into it, unfortunately I have no means to follow up on such sophisticated setup.
I guess that's as far as I can take it with this.
Thanks
sreid,
have a look at the picture I had posted. Considering I had used a small vise and considering as you stated fixed does
not equal fixed I am absolutely not sure how fixed it is.
electricpete,
awesome, many thanks for taking the time to help me and to come up with the Excel sheet.
Well...
Hi,
well the material data came from a website, a company that makes ultrasonic transducers. I felt it was quite safe to use data they had posted for SS136.
I had also found material data elsewhere which varied in some parameters but I am not knowledgeable in this field so I don't know if it...
Great stuff, many thanks for posting suggestions.
Many Thanks electricpete for the Excel file. This is most helpful.
But I am still a bit confused, as the Excel calculations
indicate Frequencies that do not match my measurements.
I wonder if I am wrong with my measurement ?
Anyway, Thanks...
Thanks everybody for trying to help me with this.
I am in particular interested in the fixed-free vibration mode.
Is this equation as I had posted above the correct one to
calculate this mode ?
f = an * sqrt{E*(pi*(OD^4-ID^4)/64)/(MU*L^4)}/2*pi
Thanks
electricpete,
1. I am using a piece of hard plastic and strike the tube
on it side, somewhere half way in the middle of the tube length.
I experimented with different 'impact' locations along the
length of the tube but it seem to make not a big difference
in terms of spectrum peaks. Once I...
electricpete,
thanks for clearing this up. I did not understand where
these values came from. I am new to this matter.
So if I understand you right I will have to resolve this equation to f.
f = an * sqrt{E*(pi*(OD^4-ID^4)/64)/(MU*L^4)}/2*pi
I am trying to confirm my Experimental data for...
electricpete
Thanks for your help, but what is
an
a1=3.52
a2=22.0
a3=61.7
a4=121
a5=200
some fetch factors ?
40818
Also, forgive me but what does FE stand for ? Is this some
simulations software ? If so, can you post a link to it ?
Thanks so much
Hi Fellows,
I like to ask for some help here. I am trying to calculate
the resonant frequencies for a sample of an open stainless steel
tube, free and mounted rigid on one end.
I have done some measurements with and spectrum analyzer
and got a couple resonance peaks.
My goal with the...
