2 - Principal stresses and maximum shear stress

Question 1

Principle stresses

Answer 1

Maximum and minimum normal stresses are called the principal stresses

Question 2

Finding priciple stresses

Answer 2

• Solution has two roots θp1 and θp2
• θp1 and θp2 must be 90º apart

Question 3

General principle stresses formula

Answer 3

Question 4

orientation of the plane that causes the shear stress to be a maximum

Answer 4

• Two roots for the equation can be determined
• The roots of (theta)p and (theta)s 45º apart

Question 5

Maximum In-Plane Shear Stress

Answer 5