James, Rainer’s fix worked in an indirect way. I pushed some changes that should address the issue you reported. Please let me know if the results are now more as you expect them. --Radu
From: [email protected] <[email protected]> On Behalf Of [email protected] Sent: Friday, 16 December 2022 08:51 To: ProjectChrono <[email protected]> Subject: [chrono] Re: High frequency noise in virtual tire test rig Hi James, the HMMWV wheel had inertia parameters, which were too low in this context. They have been replaced by estimated values based on physics. Please pull the last chrono changes and try again. Best Rainer James Baxter schrieb am Montag, 12. Dezember 2022 um 03:20:55 UTC+1: bumping this back to the top since I haven't received any response yet and am still facing this issue. On Monday, November 28, 2022 at 10:25:41 AM UTC-5 James Baxter wrote: When plotting the output data from the virtual tire test rig (https://api.projectchrono.org/7.0.0/wheeled_rig.html#wheeled_rig_tire), I observe high frequency noise on the outputs. See the attached plots. Is this to be expected? Can it be mitigated through different solver settings? All solver / timestep settings are unchanged from the demo file showing how to use the test rig: - BARZILAIBORWEIN solver - 150 max iterations - 4.0 max penetration recovery speed - step_size 1e-3 - tire_step_size 1e-4 Thanks, James [cid:~WRD0000.jpg][cid:~WRD0000.jpg] -- 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]<mailto:[email protected]>. To view this discussion on the web visit https://groups.google.com/d/msgid/projectchrono/e52e6334-9ec7-4a7b-a093-c6085e66839cn%40googlegroups.com<https://groups.google.com/d/msgid/projectchrono/e52e6334-9ec7-4a7b-a093-c6085e66839cn%40googlegroups.com?utm_medium=email&utm_source=footer>. -- 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/PH0PR06MB8237B36942529CA9AAF7BCD7A7E59%40PH0PR06MB8237.namprd06.prod.outlook.com.
