Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2008

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: NDSolve[] and Differential Equations: Problem solving two

  • To: mathgroup at smc.vnet.net
  • Subject: [mg86168] Re: NDSolve[] and Differential Equations: Problem solving two
  • From: Gopinath Venkatesan <gopinathv at ou.edu>
  • Date: Tue, 4 Mar 2008 02:09:22 -0500 (EST)

Dear Daniel

Thanks for the reply. I missed to reply to your comments.

On your comment on solving: 

<< This are nmx different calls to NDSolve that are completely independent.

Say im==1, then bdefmitr[[im]]==vi[1][t]. That is, you are declaring

that there is only ONE function to solve for.

My reply: Yes, I am solving them 'nmx' times (nmx = max mode of significance, and im = 1, 2, ..., nmx defines the individual mode numbers), and I am obtaining the time response for each modes separately. Later I combine these time response using mode shape function (Sin[im pi normalizedpositionvariable]) to get the displacement response over time.

Your example is helpful, and I will update my problem if I find something. Thank you.

Regards,

Gopinath


  • Prev by Date: Re: Mathematica Integration help
  • Next by Date: Re: Mathematica Integration help
  • Previous by thread: Re: bug report: Mathematica 6.0.1.0 crashes hard when converting an
  • Next by thread: differential equations of second order