Hi, But you set the mass of the mesh and the body to be 600, no? Why would the mass not play a role?
You could set the initial position of the mesh instead of dropping it. But please be sure to set the initial location like you did in the co-simulation: setting the position of the ChBody first, then query the location of the ChBody and then feed that position to the Chrono::GPU mesh; instead of setting that while you *AddMesh.* Since the translation argument in *AddMesh *is not for this purpose. Ruochun On Wednesday, November 30, 2022 at 5:41:53 PM UTC-6 Jack Stephenson wrote: > Hello, > The cube itself has a mass of .281 grams, thus the moment of inertia is > around .1 g, though I'm not sure if mass plays a role in the flipping or > not. If I'm understanding this correctly, could I just settle the bed, and > just drag the cube across the bed without dropping it so long as I set it's > initial position to be right on the bed? Or would I use the queries from > the Chrono bodies and position my mesh accordingly? > On Wednesday, November 30, 2022 at 4:30:52 PM UTC-7 Ruochun Zhang wrote: > >> Hi, >> >> Right now, Chrono::GPU does not checkpoint meshes or boundaries for a set >> of reasons. But since you know the position of your mesh from querying the >> Chrono bodies, you can restart the simulation using that information. >> >> For the mesh flipping issue, I can hardly believe a 600g object that is >> several centimeters' wide has a moment of inertia of around 0.1 g·cm². >> >> Ruochun >> >> On Wednesday, November 30, 2022 at 4:55:23 PM UTC-6 Jack Stephenson wrote: >> >>> Hello team, >>> >>> I am attempting to run a three-part sim where I settle the bed, drop the >>> mesh, and linearly drag the mesh across the x-axis of the bed. >>> >>> I'm splitting the sim into three parts because I'm applying two >>> different mesh motions at different times, and it was pretty difficult for >>> me to know when to apply one mesh motion over the other. However, I'm >>> trying to find a way to get the saved info of the mesh from the checkpoint >>> file and use that info for the third sim. But looking at one of the demo >>> sims, I have to manually set the boundaries and mesh again. >>> >>> My mesh is also flipping on the bed, but I know the inertia is correct >>> because I did check solid works and got the right ones. I made the cube >>> mass different than the one calculated as I need to run this sim with a few >>> parameters fixed. But I'm not sure if it's due to some other factors. >>> >>> Here's my code and some visualizations. >>> >>> >>> -- You received this message because you are subscribed to the Google Groups "ProjectChrono" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/projectchrono/06f25f44-c18f-460c-83ae-6affcdfd7a6en%40googlegroups.com.
