W2 Self-Check :) FEA

How do you find the first lesson so far? (Boring/ Interesting/ Too fast/ Cool/ Etc.)

What law is used to formulate finite element problems?

• Pascal's Law

• Hooke's Law

• Law of momentum

• Pythagorean theorem

When using direct formulation to formulate FE problem, what is the first step?

• Apply boundary conditions

• Obtain inverse stiffness matrix

• Apply load

• Discretization

For a simple vertical bar, if we decided to discretize it into 5 elements, what is the size of the stiffness matrix?

• 6x6

• 5x5

• 7x7

• 5x6

• A = cross sectional area of the initial node of an element

• A = average cross sectional area of an element

• l = length of the structure

• l = length of one element