Determinacy Flashcards
1
Q
What does a statically determinate structure mean?
A
Cases with exactly the right number of dof taken away by the supports are statically determined. Reactions can be solved from the equilibrium equations.
2
Q
What does a statically indeterminate structure mean?
A
Cases with redundant supports are statically indeterminate.
3
Q
What is a mechanism?
A
Cases with dof remaining are mechanisms
4
Q
What is the procedure for computing reaction forces in a statically determinate structure?
A
- Make an inventory of all the forces that could appear (usually on a diagram)
- Name the unknown forces
- Write down the equilibrium equations and solve them in a clever order
It is also commonplace to sketch a free body diagram of your structure
5
Q
What is an example of a statically determinate system?
A
6
Q
What is an example of a statically indeterminate example?
A
7
Q
What is an example of a mechanism?
A
