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The table below defines the values assumed by the bending moment at the different points
Plane x-z
Point Moment [Nm]
A 0,0
B 114492,7
C 0,0
D -117840,7
E -63574,6
F -103496,7
The following figure represents the trend and the values of the torsional moment
ROTATION OF THE SHAFT AT THE BEARING LOCATIONS
The table below summarizes the rotation of the shaft (expressed in radiant and positive if
clockwise direction) at different points due to the different loads:
Angle - Plane y-z
phi_Fr2_C 8,90E-06
phi_Fr3_C 1,07E-05
phi_M_C -1,38E-05
phi_Fa2*d2/2_C 6,77E-06
phi_Fa3*d3/2_C -6,33E-06
phi_Ft1_A 1,60E-04
phi_M_A -5,38E-05
phi_Ft1_BR 1,28E-04
phi_M_BR 9,74E-13
phi_Fr2_BL 1,16E-05
phi_Fr3_BL 7,66E-06
phi_M_BL 2,50E-13
phi_Fa2*d2/2_BL -4,31E-06
phi_Fa3*d3/2_BL 7,55E-06
Angle - Plane x-z
phi_M_C 1,43E-05
phi_Ft2_C 1,72E-05
phi_Ft3_C 2,06E-05
phi_Fr1_A 7,60E-05
phi_Fa1*d1/2_A -2,09E-05
phi_M_A 5,57E-05
phi_Fr1_BR 6,09E-05
phi_Fa1*d1/2_BR 4,21E-05
phi_M_BR 9,74E-13
phi_M_BL 2,50E-13
phi_Ft2_BL 2,24E-05
phi_Ft3_BL 1,48E-05
The evaluation of the rotation of the shaft can be done with the following fomulas:
SHRINK FIT AND SHAFT-HUB CONNECTIONS
This report presents the analysis of the connection between the gear and the shaft, made
by a shrink fit and a key. In particular it analyzes in detail the followings points:
1. define the minimum interference which guarantees load transfer without slips
2. verify that the design interference is equal, or larger, than the minimum interference
3. verify that when using the design interference, the stress state does not lead to the
failure of the components
MINIMUM INTEREFERENCE
Knowing that the torque that has to be applied on the shaft is equal to 612 kNm, the limit
value of the torque is defined as