

Understanding Failure Theories
Interactive Video
•
Physics
•
11th - 12th Grade
•
Practice Problem
•
Hard
Jennifer Brown
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary difference between failure in ductile and brittle materials?
Ductile materials fail by fracture, brittle materials by plastic deformation.
Ductile materials fail by plastic deformation, brittle materials by fracture.
Both fail by fracture.
Both fail by plastic deformation.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the Maximum Principal Stress theory state about material failure?
Failure occurs when deviatoric stress is maximum.
Failure occurs when shear stress exceeds yield strength.
Failure occurs when principal stresses exceed yield or ultimate strengths.
Failure occurs when hydrostatic stress is zero.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the Maximum Principal Stress theory not ideal for ductile materials?
It requires extensive experimental data.
It only applies to brittle materials.
It is too complex to apply.
It does not account for hydrostatic stress.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the Tresca failure criterion also known as?
Hydrostatic Stress theory
Maximum Principal Stress theory
Maximum Shear Stress theory
Maximum Distortion Energy theory
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the von Mises criterion focus on in terms of stress?
Deviatoric stress
Shear stress
Hydrostatic stress
Principal stress
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which failure theory is generally more conservative, Tresca or von Mises?
Neither is conservative
Tresca
von Mises
Both are equally conservative
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key feature of the von Mises yield surface?
It forms a square.
It forms an ellipse.
It forms a triangle.
It forms a circle.
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