Hi,

I am trying to create a geometry such that a circle touches a rectangular box. I used two lattice types. (i) Hex and (ii) Sq2. To my surprise i found that the two geometries look different. I am attaching a .doc file to this mail.

When I used the Hex lattice type, the circle became smaller and there is distance of seperation between the rectangular box and the circle. But when I used the Sq2 type, the circle is according to the dimensions i specified and the circle is touching the rectangular box, the way it should be. Also, when i am applying a force to the circle or ‘fix’ something on the circle with Sq2 lattice, it gives a “segmentation fault” error. If i bring the circle in Hex lattice on to the rectangular box, it runs fine. A portion of the code is available in the .doc file attached.

So i would like to know whether I am missing anything here because i want the circle with proper dimensions touching the rectangular box and it should work fine with the ‘fix’ command.

Thanks in advance.

Peri.

Query.doc (142 KB)