What is steady state solution of a forced oscillsation system?
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The equation of motion for a driven damped oscillator is:
md2xdt2+bdxdt+kx=F0cosωt.
We shall be using ω for the driving frequency, and ω0 for the natural frequency of the oscillator (meaning that ignoring damping, so ω0=√k/m. )
external driving force = F0eiωt
with F0 real, so the actual physical driving force is just the real part of this, that is, F0cosωt.
So now we’re trying to solve the equation
md2xdt2+bdxdt+kx=F0eiωt.
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Explanation:
The solution to the driven harmonic oscillator has a transient and a steady-state part. The steady-state solution is the particular solution to the inhomogeneous differential equation of motion. It is determined by the driving force and is independent of the initial conditions of motion.
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