posted 10 months ago

posted 10 months ago

posted 10 months ago

posted 10 months ago

The minimum film thickness ismm.

The maximum film pressure is___Mpa.

The total oil-flow rate for the minimum clearance assembly is___mm3/s.

posted 10 months ago

The power loss is___W.

The minimum oil-film thickness is___mm.

The side flow is____mm3/s.

posted 10 months ago

The forces are F120 N, F230 N, and F350 N, and Me= 10 N.m.

1. Find the moment(s) and torque(s) that each force will produce on the shaft at O [4.5 Marks]

4. Find the factor of safety for shaft OA by using the Maximum Shear Stress theory and specify whether the structure is safe or not 3.5 Marks]

3. Find the bending and shear stresses at O [3 Marks]

2. Find the resultant moment and resultant torque at O [4 Marks

posted 10 months ago

posted 10 months ago

1- Find the tension T3=

2- Find the tension T4 =

3- Find the reaction at the support C in y direction, Cy,=___N

4- Find the reaction at the support O in y direction,oy=n

5- Find the reaction at the support C in z direction cz=___N

6- Find the reaction at the support O in z direction, 0z =____N

7- Find the total resultant moment at point A, MA____N.mm

8- Find the total resultant moment at point B, MB=---N.mm

9- Calculate the normal stress at point A, theta A____mpa

10- Calculate the normal stress at point b theta =mpa

11- Calculate the torque at point A, TA=_____N.mm

12- Calculate the torque at point B, TB=______N.mm

13- Calculate the shear stress at point A, TA=____MPa

14- Calculate the shear stress at pointВ, Тв-----MPа

15- Calculate the maximum principal stress, theta 1 =MPa

16- Calculate the minimum principal stress, o2 =___MPa

17- Calculate the maximum shear stress, Tmax____MPa

19- Calculate the angle to the maximum shear stress planes, theta =___ deg

18- Calculate the angle to the principal planes,theta p=__ deg

posted 10 months ago

a) Yield strength,

b) Ultimate tensile strength

c) Principal stresses,

d) Maximum shear stress

e) Mohr circle

posted 10 months ago

b) Use torque equilibrium, to find the tensions in the belt on pulley A assuming the shaft is running at a constant speed

c)find the magnitudes of the bearing reaction forces at O and C, assuming Draw the FBD of the shaft and the bearings act as simple supports

d) Draw shear-force, bending-moment and torque diagrams for the shaft. If needed, make one set for the horizontal plane and another set for the vertical plane.

e)Find the critical point on the shaft and, determine the bending stress and the torsional shear stress. Why is this point critical?

f)Draw the stress state for this point and show the stresses on an infinitesimal square element

g) Draw the Mohr circle on a scaled paper with rulers and compasses

h) Find the principal stresses and maximum shear stress at this point

i)Show the stress state at the principal and at maximum shear stress planes