Module 1 Flashcards
1
Q
fs
A
static load
fs = ku
2
Q
stiffness of column with rigid roof
A
k = 12 EI / h^3
3
Q
stiffness of column with no stiffness in roof
A
k = 3EI / h^3
4
Q
damping
A
dissipation of energy in vibrating system by various mechanisms
- allows for reduction in vibration amplitudes
5
Q
mechanisms of damping
A
complex and occur for various reasons
- friction between structural connections
- opening and closing of microcracks in concrete
- friction between structure and non-structural elements
6
Q
fd
A
visocous damping (velocity proportional damping) fd = cudot
7
Q
ut
A
total structural displacement
ut = ug + u
