Statically Indeterminate Systems

Question 1

If there is a beam between two fixed supports, what happens?

Answer 1

Because the supports are fixed, the overall length of the beam cannot extend, meaning that the supports will exert a greater force, to make sure the overall extension is 0

Question 2

What happens if we have a support with a non-homogeneous cross-section?

Answer 2

Becuase the materials have different areas (e.g. having a different material for support cores) we will have different pressures acting on the materials