Quiz - Contact

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Quiz - Contact

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Question 1 of 10

1. Question
When two bodies come into physical contact, they:
- 1) Do not interpenetrate each other
- 2) Can dramatically change the load path and the model structural stiffness
- 3) Develop restoring forces at the interface
- 4) All of the above
Question 2 of 10

2. Question
The force vector at a bonded contacting interface can be transferred:
- 1) In both normal and tangential directions at point of contact
- 2) Only in normal direction
- 3) Only in tangential direction
- 4) Only when large deflection is included
Question 3 of 10

3. Question
Calculating contact forces at an interface depends on:
- 1) Materials of interfacing bodies
- 2) Kinematics of interfacing bodies
- 3) Shape and topology of the underlying mesh
- 4) All of the above
Question 4 of 10

4. Question
Contact Penalty Formulation allows a small amount of:
- 1) Material failure at the interface
- 2) Penetraton between the interfacing bodies
- 3) Heat loss at the interface
- 4) Sliding at the interface
Question 5 of 10

5. Question
The Penalty formulation is used to calculate:
- 1) Both the contact pressure and frictional stress
- 2) Heat and damping
- 3) Newton-Raphson criterial
- 4) None of the above
Question 6 of 10

6. Question
Lagrange formulation treats contact:
- 1) As a constraint
- 2) As an independent variable
- 3) As a separate physics
- 4) With respect
Question 7 of 10

7. Question
Lagrange formulation results in:
- 1) Hard-to-converge solutions
- 2) Zero penetration
- 3) Zero sliding restoring force
- 4) High contact stiffness
Question 8 of 10

8. Question
MPC Contact Formulation uses linear relations
- 1) Between degrees of freedom of contacting interfaces
- 2) To control multiple physics in contacts in fluid solid interaction problems
- 3) To control stress vs strain
- 4) Only in large deflection problems
Question 9 of 10

9. Question
Unlike penalty formulation, MPC does not involve
- 1) Large Deflection
- 2) Nonlinear Materials
- 3) Penalty Stiffness
- 4) All of the above
Question 10 of 10

10. Question
Comparing penalty and Lagrange contact formulation, one can find:
- 1) Lagrange formulation has the advantage of zero penetration
- 2) Penalty formulation does not depend on contact stiffness
- 3) Over constraints are not possible for Lagrange formulation
- 4) Penalty formulation is more expensive