Description
Determine the natural frequencies of a simply supported 80" long beam with 2"X2" square cross-section. Consider modes in the XY plane only.
File Name
Browse to drive letter:\Users\Public\Public
Documents\SOLIDWORKS\SOLIDWORKS version\samples\Simulation
Examples\Verification\Frequency_9.SLDPRT and open the
file.
Shell Parameters
Shell thickness = 2 in - Thick formulation.
Material Properties
Modulus of elasticity = 30,000,000 psi, Poisson's ratio = 0.3, Density = 0.282072 lb/in3.
Modeling Hints
Use the Intel
Direct sparse solver.
Results
| Frequency No. |
Theory (Hz) |
SOLIDWORKS Simulation (Hz)
|
| 1 |
28.78 |
28.63
|
| 2
|
115.12 |
113.57
|
| 3 |
259.00 |
251.1
|
Reference
Thomson, W. T., “Vibration Theory and Applications,” Prentice-Hall, Inc., Englewood Cliffs, New Jersey, 2nd printing, 1965, p. 18.