Questions and Answers

- 1.
### Calculate the nominal, tolerance and clearance in Figure 1: A) Arithmetic / B)Statitistical 1.5RSS

- 2.
### Given the outside radius Ro, the inside radius Ri the axial force F and a measured friction coefficient µ, derive an expression for the torque T that can be transmitted with this clutch (see figure 2).

- 3.
### Does the hole have an effect on the stress? If yes, explain where is the maximum stress? (see figure 3).

- 4.
### Two steel bars with identical geometry are subject to an equal load. The first bar has a yield strength of σys = 1000 MPa while the second bar has σys = 500 MPa. The load causes a max. stress of σ = 400 MPa. Which bar deflects more? (see figure 4).

- 5.
### It is known that the machining production of a Impeller hub diameter has a normal distribution. The average of the diameter is ø45.8 and the Sigma is 0.2. Considering that the print spec is ø46+/-0.4.

- 6.
### Calculate the equivalent spring rate of the following spring configurations (A & B). Consider K1 = 2 N/mm and K2 = 2 N/mm (see figure 6 A & B).

- 7.
### Name at least 5 different GD&T

- 8.
### Calculate the torque on point (A) when F = 210N and length of rod is 2m and create free body diagram of the stress distribution on the x-section at point A.

- 9.
### What case has the highest and the lowest contact stress? Case1: Cylinder-Plane / Case2: Cylinder-Cylinder / Case3: Cylinder-Cylinder

- 10.
### In the beam below, with circular x-section, Identify the location point of the highest stress and the possible location of the failure. Create a free body diagram of combined stress of the section.

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