error when using fix move/mesh rotate

Submitted by knoe_ph on Wed, 01/16/2013 - 15:16

Hello,

I get an error message when using the fix move/mesh rotate command:

"Fix move/mesh (id rot): only one reference point allowed (fix_move_mesh.cpp:221)"

I'm not sure what his means and I dont know how to solve it.

I got an .stl file, which i first move by

"fix move/mesh linear"

This works fine. After that I unfix this command and use

"fix move/mesh rotate"

where I get the discribed error message.

Regards
Philipp

AttachmentSize
Plain text icon in.rot_test.txt8.68 KB
Binary Data Deckel_D25.stl_.gz18.68 KB

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brennank | Wed, 01/16/2013 - 20:10

Philipp,

Can we see your full input script? What you describe *should* work, but it's easier to verify with the entire input. Along those lines, what version of LIGGGHTS were you using when it returned this error?

~Kevin

knoe_ph | Fri, 01/18/2013 - 09:38

Hi Kevin,

well basically the problem appears when I'm using a loop:

label loop1

fix press all move/mesh mesh plate linear 0 0 -0.1
fix rot all move/mesh mesh plate rotate origin 0 0 0 axis 0 0 1 period 0.001

run 10000

unfix rot
unfix press

run 10000

jump in.${NAME} loop1

I get the error message at the second run of the loop, so I guess the problem has to something to do with the loop.

knoe_ph | Fri, 01/18/2013 - 11:38

Hallo Christoph,

Sure, I addedthe input file + the used stl file in my opening post. The input file might appear a little bit confusing, sorry for that. The last lines of the codes are the oneswhere i get the error message. For the upload of the stl_file i added the extension ".gz" in order to be able uploading it.

I use version 2.2 btw.

Kind regards
Philipp

ckloss's picture

ckloss | Thu, 01/24/2013 - 17:25

Hi Philipp,

it seems you have the fix move/mesh commands inside a loop, which I think is not what you want. You're replacing a fix by the same fix, which causes the trouble in this case. I'll fix it for the next release.

Cheers Christoph

Cheers, Christoph