For this two degree fo freedom model, how do I find the matrix equation of motion?
How do I find the value of the modal ratios if m1=m2=m, k1=k and k2=3k?
If a force of 25sin3t is applied to m2, how do I find the value of the response if m1=m2=1 slug, k1=10lb/ft and k2=30lb/ft?
Mechnical Vibration Analysis
I have a mass-spring-damper system that is tested to determine the value of the viscous damping coefficient c. Assume k=10lb/ft and m=2 slug. The vibrational amplitude is observed to decrease to 33% of its initial value after two consecutive cycles.
How do I deduce the value of the logarithmic decrement?
How do I deduce the value of the viscous damping factor?
How do I deduce the value of the viscous damping coefficient c?