Hi,

Did you visualize your simulation? I doubt if this script can produce the 
correct physics. Last time, I stated that I believed one Chrono body was 
enough, and you had to collect force from both pieces of your meshes. This 
script uses at least 4 ChBodies (it may work, but I do not understand how 
they are used here) and seems the force is collected from the tip mesh 
only. Again, that's my speculation, because I don't know the mesh you used; 
but I doubt it would work, with low *or* high Young's modulus. It may 
happen to not throw an error at certain settings.

Perhaps more importantly, I know the tip force is what you are after but 
did you manage to get a one-mesh-one-cone test scenario running, visualize 
it and validate the physics it produces? I think you have to start there, 
and if you have that the rest should follow naturally.

Thank you,
Ruochun

On Thursday, June 30, 2022 at 12:07:59 AM UTC-5 [email protected] wrote:

>   Hi,
>
> I am trying to use the Chrono gpu to achieve a similar effect as the run a 
> cone penetration test but have been running into some difficulties. I hope 
> that somebody here would be able to help me out.
>
> When setting the young's modulus for the particles and boundaries to 1e9, 
> I get the following error:
>
>    - No available contact pair slots for body xxxxx and body xxxxx
>
> However, when I run the simulation with values larger than 1e9, the 
> simulation runs smoothly. 
>
> It seems strange to me that there seems to exist a critical value of 
> cohesion that causes models to behave in unexpected ways. I am wondering if 
> anybody here has had success with using low values for young's modulus in 
> Chrono GPU. I am attaching my file for your reference. 
>
>

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