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Hi

easiest to sort out these cases (I always restart from scratch) is to start with a simple beam and only mesh it with very few elemnts 2-8 so you can easily track them in your head and on papaer with a simple analytical case.

then you can understand the use and identification of the p, d, t, q

I beleive I remeber (I do not have my manuals here), that the t are the tetrahedral elements, the q the quad (often you have only one of the two types), p are the node coordinates, and d the data

So and if I have it right "t" is the "indexes" of nodes "p" making up the thets and "q" the indexes making up the quad elements (careful with orientation to not invert them). And d are the data values at the nodes "p"

Pls check this carefully, because I'm recording from what I remember and cannotcheck.

hope this helps
Good luck
Ivar

Hi Ivar,

I have found the solution:

iout = postglobaleval(fem,{'iOut'})

which returns:

iout =

x: [101x1 double]
y: [101x1 double]
legend: {'iOut'}

I may then access the expression at a single data point with:

iout.y(90)

or plot the results with:

plot(iout.x,iout.y)

Regards,
Tom

Hi Tom

As often, it's "evident" once you have found the error, it was almost written litterally, I searched for a comsol explanation but it was a programming cast error, I should too have seen it too, willdo better next time ;)

Thanks for the reply
Ivar

I solved my problem thanks to this thread.

It was a big help for me.

Thank you again for discussion.

- Seong Jae