Ductile Failure Theories - Yield Criteria in Just Over 10 Minutes (Updated Version Below!)

Yield (DUCTILE) FAILURE Theories in Just Over 10 Minutes!
Yield (DUCTILE) FAILURE Theories in J...

Fracture (BRITTLE) FAILURE Theories in 10 Minutes!
Fracture (BRITTLE) FAILURE Theories i...

0:00 Intro
0:35 Maximum Shearing Stress Criterion
2:10 Principal Stresses Mohrs Circle
5:38 Distortional Energy Criterion
8:32 Coulomb Mohr Criterion
9:37 Lecture Example

Maximum Shear Stress Theory or Tresca
Maximum Distortion Energy (Von Mises Stress)
Ductile Coulomb Mohr

Sigma x and Sigma y are the given stresses, not the principal stresses. Different combinations of given positive and negative stresses--together with the shearing stress--can result in a) two positive principal stresses, b) two negative principal stresses, and c) one positive and one negative principal stress:

Maximum Normal Stress, Brittle Coulom...

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Example 1: Yield Criteria - Example 1 - Stress E...
Example 2: Yield Criteria - Example 2 - Stress E...
Example 3: Yield Criteria - Example 3 - 3D Rod D...

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