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Questions and Answers
Calculate the nominal, tolerance and clearance in Figure 1:
A) Arithmetic / B)Statitistical 1.5RSS
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).
Does the hole have an effect on the stress? If yes, explain where is the maximum stress? (see figure 3).
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).
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.
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).
Name at least 5 different GD&T
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.
What case has the highest and the lowest contact stress?
Case1: Cylinder-Plane / Case2: Cylinder-Cylinder / Case3: Cylinder-Cylinder
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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