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[Question #704280]: How to apply loadings through clump with an constant velocity

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: Gao Xiang <question704280@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 03 Jan 2023 12:35:34 -0000
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New question #704280 on Yade:
https://answers.launchpad.net/yade/+question/704280

Hello, everyone, 
Thank you for your help all the time. Now, I want to simulation the single particle breakage, and I want to apply the loading with clump instead of wall for the custom contact faces.

For wall, it is easy to set a constant velocity with  “O.bodies.state.vel”, however, for clump, O. bodies.state.vel  just can provide an initial velocity instead of a constan velocity. Although I can use PyRunner to set velocity every step, it is difficult to keep a constant velocity and sometimes the movement of loading plate is very slow, even stopped due to the uncontrollable speed.

I want to know how to apply a constant velocity to a clump as a loading plate.

Thanks a lot!

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