Identification of the critical frequency of a rotating shaft using solid works

AIM :- to create rotating shaft and analyse the frequencies of 5 model shape .

Rotating shaft parameters.

disc 1.:- 55 mm of radius

disc 2:- 20 mm radius

shaft 1 20 mm radius

shaft 2:- 15 mm radius

now ,

boss extrude 1:- 10mm

boss extrude 2:- 200mm

boss extrude 3:- 230mm

5 MODES OF SHAPES :-

1.

2

3.

4.

5.