L5: Mohr-Circle and Principle Stresses

Question 1

For the case of the applied uni-axial stress, σx = 10Mpa, what would the Stress-Angle graph be for normal and Shear Stress

Answer 1

Question 2

Answer 2

Question 3

How do you find the 2D normal stress transformation at any angle

Answer 3

Question 4

How do you find the 2D shear stress transformation at any angle

Answer 4

Question 5

How do you construct the Mohr Circle for this

Answer 5

Question 6

What two pieces of information can be gained from the Mohr Circle

Answer 6

Question 7

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Question 8

Answer 8

Question 9

How should the following Mohr-Circle be constructed

Answer 9

Question 10

How can you use the geometry of the Mohr-Circle to find the radius, the normal and shear stresses, and angles

Answer 10

Question 11

What is Torsion/Torque, and how is it applied to a shaft

Answer 11

Torsion is a form of bending that occurs when the element is twisted, i.e. a twisting moment, Mx or torque, T, is applied about the longitudinal axis of a shaft.

Question 12

How can you find the shear strain acting on the shaft is twisted, assuming the angles are small

Answer 12

Question 13

What is the Simple Torque Equation

Answer 13

Question 14

What would the Mohr-Circle be for this circular prismatic shaft

Answer 14

Question 15

What are the three important modes or forms of potential failure for a shaft in torsion

Answer 15

Question 16

Give an example of a material failing due to Shear Stress

Answer 16

Question 17

Give an example of a material failing due to Tensile Stress (at +45° to the shaft axis)

Answer 17

Question 18

Give an example of a material failing due to Compressive Stress (at +45°)

Answer 18

Question 19

What are the maximum shear and normal stresses linearly proportional and inversely proportional to

Answer 19