I am trying to build a circular arrangement of clumps inside an assembly to represent a circular shape tunnel. This arrangement I did it as a group of spheres assigned to these particles. However, I wanted to change them to clump, and I am very confused at this moment. Defining a clump template would generate a randomly clumps in the domain which is not the case I want. I searched the documentation of PFC 7 and found out the command clump create, and I did use it to create each clump in the defined function to create the circular arrangement. However, I am facing an error which I wasn’t been able to fix it. Kindly find attached picture showing this error followed by the command used to create the clump.
clump create pebbles 1 0.001,[(x_position,yo + t, z_position)] d 2770 calculate
Please I wanted to know what I did wrong having this error, and how to fix it. Appreciate any help. Thank you.