Panel Vibration

Rating:
7

Description


Calculate natural frequency of a rectangular flat plate with simply supported edges.

Calculation Reference
Harris' Shock and Vibration Handbook

Calculation Preview

Submitted On:
03 Mar 2014
File Size:
37.87 Kb
Downloads:
537
File Version:
1.1
Rating:
7

 
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Comments: 6
RobertRowley 7 years ago

Thanks John, I missed the Te/mm3 I had not seen that before
Boffin 7 years ago
I updated the calculation to remove the external function "Spline()" and used an equation after fitting a trendline to the tabulated data.
JohnDoyle[Admin] 7 years ago
Hi Bob actually the units are mm and tonnes so my density is tonnes/mm^3. Also notice that acceleration due to gravity is mm/s^2. So I think the calculation is fine.
The choice of units might seem a little odd but I often work in mm when modelling using finite element software. The handcalc is a sense check on my FE model results.
RobertRowley 7 years ago
Could you please check your steel Your Density of material. 7860 kg/m3.
you have entered 0.000000000786 kg/mm3
1 kilogram / cubic meter = 1.0 × 10-9 kilograms / cubic millimeter
So your imput for steel should be 7860 * 10-9.
0.00000786.
If I have missed anything then sorry.
yapigrup 10 years ago
Thanks.
Boffin 14 years ago
My first repository upload I hope it's useful to someone.