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ptc-49164271-Visitor
1-Visitor
June 8, 2019
Question

How to access predefined function used by creo parametric?

  • June 8, 2019
  • 1 reply
  • 2203 views

Is it possible to access source file which is used by creo to design lattice.

Basically i want to access the formula used by creo to design the formula driven lattices (DIAMOND). 

1 reply

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Lucille76461-Visitor
1-Visitor
June 8, 2019
@vidmate wrote:

Is it possible to access source file which is used by creo to design lattice.

Basically i want to access the formula used by creo to design the formula driven lattices (DIAMOND). 

Great article, but it would be nice if you added an example with navigation.

    P
    ptc-49164271-VisitorAuthor
    1-Visitor
    June 8, 2019

    For example, in case of gyroid the governing equation is

     

    U_g=cos〖k_x* x〗 sin⁡〖k_y* y〗+cos⁡〖k_y* y〗 sin⁡〖k_z *z〗+cos⁡〖k_z* z〗 sin⁡〖k_x *x〗-t

    Gyroid (G), lattice structures with arbitrary numbers of cells and volume fractions can be generated by finding the U = 0 isosurface of the gyroid equations.

     

    Where

     k_i=2π *n_i/L_i

     with i=x,y,z

     

    where n_i  are the numbers of cell repetitions in the directions x, y and z, and  are the absolute sizes of the structure in those directions.

    In creo for n_i we can use pattern and for L_i  it is “CELL Size” in GUI. I think there is no control over “t” in creo, absolutely fine. From these values, When I am trying to create lattice with some level of wall thickness, the lattice is very bad in 3D with uncontrolled thickened value. I think there is no control over surface generation.

    My idea is, if I could somehow extract formulas used by the CREO, by this I can manually create the curve>surfaces from these formulas/equations.

    Any suggestions appreciated thanks!

     

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