- This experiment can be used to estimate the first five natural frequencies of a beam.
- These different types of beam are considered as
- Cantilever beam
- Fixed beam
- Simply supported beam
- The modal analysis is carried out to estimate the natural frequencies by two different ways that are theoretical and by simulation. natural frequencies for particular case .
- The experimentation is carried out to provide the information to how to get natural frequencies for particular cases.
- The first five frequencies are calculated by using the theory as we have discussed in previous section ad these are compared with simulations by using commercial software ANSYS.
- In additionally mode shapes along with their frequency response are shown in addition to the natural frequencies.
- Only the natural frequencies of the in-plane mode shapes are considered. The obtained rsults show the good argument with the theoretical results.
- 30 cm length of beam of rectangular cross section was considered throughout the experiment.
- Modal and harmonic analysis is carried out to different values of width the thickness of beam.
The material specification
Young's Modulus = 200GPa
Poison ratio = 0.3
Density =7300#
Cross section =Rectangular
Length =30 cm