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[Austin Sutton <question658037@xxxxxxxxxxxxxxxxxxxxx>]

New question #658037 on Yade:
https://answers.launchpad.net/yade/+question/658037

Hello,

My research is heavily focused on the modeling of the powder spreading process in the selective laser melting process. Here, a thin layer of powder is spread across a build area with a recoater arm where a laser then subsequently melts powder particles in a layer-by-layer fashion to create 3-D components. Rather than create my own DEM program, I have turned to YADE for help in simulating the powder spreading process. 

So far, I have made a script to simulate the spreading process incorporating Hertz-Mindlin contact (IP2_FrictMat_FrictMat_MindlinPhys accompanied with Law2_ScGeom_MindlinPhys_Mindlin) between the particles as well as boundaries of the recoater arm and substrate, both represented by facets. I now would like to change the interaction type between the facets and spheres to be represented by Law2_ScGeom_FrictPhys_CundallStrack while still maintaining the Hertz-Mindlin contact between the spheres. In other words, I want to be able to incorporate multiple interaction types for the particles being simulated. However, I cannot figure out how to make this change in YADE. Is there a trivial solution to this problem? If so, I'd appreciate any help that anybody can offer. 

Thank you,
Austin

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