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What should be the influence of the imaginary part on a complex number?

  1. Dec 17, 2012 #1

    What should be the influence of the imaginary part on a complex number?

    I am asking because I am running a simulation model where the input is a complex number; say z=a+ib
    Now the problem is that I get the same result when I put a=0 and give some high value to b, as when I do the vice-versa.

    Should this behaviour be expected?

    I look forward to a reply. Thank you in advance.
  2. jcsd
  3. Dec 17, 2012 #2
    I'm no expert, but I'm pretty sure your question is too general to be given a meaningful reply. What sort of simulation is it? What, specifically, is the input modeling? As far as I understand, the imaginary part of a complex number refers to a quantity of rotation around the complex plane, where the real part refers to the radius of said rotation. Though even this description is likely insufficient.
  4. Dec 17, 2012 #3
    Hey! Thanks for your reply. The input is the stiffness and damping coefficients of a material. And youre right; the stiffness corresponds to the amplitude and damping to the phase of the resulting vibrations.
    I would expect different results if I change the stiffness and the damping of a material separately. But here i get the same result.
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