Problems in creating a matching or perfect joining partner for a part with rough surface(Tetrahedral mesh)

Hello,

I have a part with nodal coordinates and Element connectivity(Tetrahedral mesh). I want to create a part similar to the given part and they both should mate perfectly. So just reflection doesnot solve my problem. So what I did is I extracted the bottom surface of my input part which gives a surface with triangular mesh and is extruded in the downward direction and meshed it with tetrahedral mesh(iso2mesh tool box). But the number of elements on the initial surface before extrusion is changed in the way the number of nodes and elements are changing. Please tell me how to make it same.For me only the interface surfaces are needed to be same and other than that no problem.

[darova]

Attach the data and your script

[Praveen Venkatesh Sethumadhavan Vasan]

Hii Darova,

I could not attach the data as it is more than 5mb even as zip file.

please send your mail id.

Thanks

[darova]

You can upload file somewhere (maybe here)

Attach the link here

[Praveen Venkatesh Sethumadhavan Vasan]

https://ufile.io/tanqffdp

[darova]

What is this? volface

[Praveen Venkatesh Sethumadhavan Vasan]

https://ufile.io/u0aagqy5

[darova]

Undefined function 'negZ_top' for input arguments of
type 'double'.
Error in Untitled (line 22)

[Praveen Venkatesh Sethumadhavan Vasan]

https://ufile.io/qg7s01qr

[darova]

You want your mesh to look like red lines show?

[Praveen Venkatesh Sethumadhavan Vasan]

No, what you are telling is Triangular Prism. I know how to obtain the triangular prism mesh . But before that I want the same tetrahedral mesh same as the input which I gave. But the new part should match perfectly with the input which i gave...Means the ups of one part should match the downs of the other part.

[Praveen Venkatesh Sethumadhavan Vasan]

This is how I want. suppose I gave you the input of the top part here, I want the bottom part as below.