Structural dynamics

Question 1:

Compute lateral stiffness of the one story frame with an intermediate realistic stiffness of the beam. The system has 3 DOFs as shown. Assume L = 2h and El_b = El_c.

_{AIM: To compute the lateral stiffness of one storey frame with given parameters.}

Question 2:

For the following structures:

• Determine the number of degrees-of-freedom for dynamic analysis
• Establish the equation of motion
• Calculate their natural frequencies
•   

AIM: To determine the no of degree of freedom establish the equation of motion and calculate their natural frequncies.

Question 3:

Consider the propped cantilever shown in the figure below. The beams are made from the same steel section and have lengths as shown on the diagram. Determine the natural period of this system if a large mass, M, is placed at the intersection of the beams at point A. The weight of the beams in comparison with the mass M is very small.

AIM: To calculate the natural period of given system.

Question 4

Determine an expression for the effective stiffness of the following systems:

AIM: To determine the expressions for the effective stiffness of the following systems.