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ronbak1-Visitor
1-Visitor
June 30, 2016
Question

Coulomb vibration response

  • June 30, 2016
  • 3 replies
  • 1750 views

I am new to Mathcad Prime and my math skills are a little rusty.  I am trying to get a response plot of a non-linear system with Coulomb friction.  The sign of my velocity changes every half cycle.  I figure I need to do some programming to get my response plot.  I haven't had much success and there aren't too many resources available.  I tried the Help and Tutorials and I still am having trouble.

I was hoping somebody could assist me and also point me to some good resources on programming in Mathcad Prime.

Thanks

    3 replies

    F
    Fred_Kohlhepp23-Emerald I
    23-Emerald I
    June 30, 2016

    See attached.

      R
      ronbak1-VisitorAuthor
      1-Visitor
      June 30, 2016

      Fred, Thank you.

      I was close but not close enough

      Two things:

      in the solve block, what does sign do? I assume it returns + or -.   I tried Help but too many sign results came up.

      I corrected my equations but can't get the full plot.  I tried a few ways but keep getting errors.  Can you take a look?

      Thank you

      F
      Fred_Kohlhepp23-Emerald I
      23-Emerald I
      July 1, 2016

      sign is a function that returns the sign (positive or negative) of its argument

      Take a look

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