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M
msu121811-Visitor
1-Visitor
March 26, 2012
Solved

Need help putting this into Mathcad (railgun)

  • March 26, 2012
  • 15 replies
  • 6829 views

Hi guys

I think I can do this using rkfixed or odesolve, but it has been a while since I have done such a thing and need a bit of a refresher.

This is what I am trying to do...

I have the following

Untitled.jpg

Am I on the right track thinking I can used some rkfixed?

Any help would be appreciated...

Best answer by ValeryOchkov

Fine slution! Thanks!

Now I think - do we need 2d, 3d, 4th etc y-axis in Mathcad (Prime) - see the picture!?

Sometime I need secons x-axis - for the temperature in K and in °C.

4-axes.PNG

15 replies

M
msu121811-VisitorAuthor
1-Visitor
March 26, 2012

Ok guys this is what I am trying but I don't know if I going about it the right way...

A
AndyWesterman12-Amethyst
12-Amethyst
March 27, 2012

Looks to be a good starting point.

2 minor problems with the sheet that I have noticed.

1. the number of intervals is set at 2 so the ODE doesn't give an accurate output, I've changed that to 2000 but you could leave the parqameter out it will default to 1000,

2. the ODE now gives a very fast response & I guess that this will be correct. So I have modified the end time to 20us so the graphs are showing the overall curves.

Whether the result is representative or not, I can't say.

Hope it helps

regards

Andy

M
msu121811-VisitorAuthor
1-Visitor
March 27, 2012

Hi Andy,

Thank you for your response. I think this has got me going on the right track. Do you know if Mathcad will allow you to carry units through the Odesolver or is it better just to leave it as is?

Thanks again.

Addison Mauldin

M
msu121811-VisitorAuthor
1-Visitor
March 28, 2012

Ok so here is the other part (and by the way final question) of this project...how would you take care of the index i from 2 to N. By the way the Rt is 0.02 ohm.

Capture.GIF

Capture1.GIF

M
msu121811-VisitorAuthor
1-Visitor
March 28, 2012

Ok here was the attempt...See file attached

M
msu121811-VisitorAuthor
1-Visitor
March 28, 2012

By the way I know the initial voltages are not zero....there has to be some initial voltage applied for the thing to work. I just don't know the values yet...

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