Learning Forum

[aalegre]

Hi all, 

I am attempting to create randomly distributed pores in a material to determine the influence of porosity of the mechanical behavior. I've found a similar project here in which the users randomly place fibers in a rectangular volume to simulate reinforced concrete rebar. However, for my application I am looking to create one model with pore size of uniform radius and a second model with varying pore size, both with random distribution. Any and all help would be appreciated. 

[Rob]

You'll probably need to create a random pattern of points and then build spheres at those points. Given it's mechanical I assume the spheres won't touch? 

[aalegre]

Is there anyway to create multiple spheres simultaneously? Or will each sphere have to manually be created?

I have a simple MatLab script that generates random points within the bounding box specified and generates a text document to be read into designModeler as coordinates. Its simple and works well for generating several points, however with so many points it is cumbersome to create each sphere by hand, is there another way to do so? 

[Rob]

There is a way in DM, and this should do it    https://www.cfd-online.com/Forums/ansys-meshing/201428-design-modeler-scripting.html

In SpaceClaim it's much easier. Turn on the Beta Features (under File -> Options) and then turn on Tracking. Create the bounding box and then create a sphere (Design - Body) and in Tracking edit the snippet that's produced to give many spheres.