I have a composite material having sphere-shaped particles as reinforcements. So, there will be two different materials, one for matrix and one for these spheres. How can I define the boundaries of the subdomain for these spheres? I’ve tried to get cell coordinates by cell.get_coordinates_dofs, but …

I’ve tried to implement you solution but I couldn’t define subdomain for the spheres. I mean, how should I enter the coordinates of all spheres in the inside function?

Make several functions that each define one sphere, and tag them with a marker one by one. This can br scripted in Python. You could also use the Gmsh Python api to directly define the subdomains of yhr mesh, as shown in: Electromagnetics example — FEniCSx tutorial

Defining subdomains for discontinuous composite material

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dokken October 18, 2021, 2:09pm 2

See for instance: How to define different materials / importet 3D geometry (gmsh) - #2 by dokken

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Defining subdomains for discontinuous composite material

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