Hi Ding, This is a demo that I meant to remove a while ago. I just did that.
There is a much better way of setting up such a single wheel test and that is through the utility class ChTireTestRig. In particular, demo_VEH_TireTestRig_CRM shows usage of this test rig on CRM deformable terrain. ChTireTestRig offers a lot more capabilities than the hard-coded mechanism in demo_FSI_SingleWheelTest. Please try this new approach and let us know if you see similar issues. --Radu From: [email protected] <[email protected]> On Behalf Of Kelvin Ding Sent: Wednesday, January 7, 2026 3:29 PM To: ProjectChrono <[email protected]> Subject: [chrono] demo_FSI_SingleWheelTest * Hello everyone! * After running demo_FSI_SingleWheelTest, I noticed that the component forces in the y and z directions are zero in the output results, and the torques in the syz direction are also all zero. Why is this the case? * I want to obtain the component forces and torques in all directions during the wheel's operation through calculations, so that I can compute the Pull Coefficient (PC) and Tractive Coefficient (TC). * All the best * Ding -- 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 visit https://groups.google.com/d/msgid/projectchrono/bd150b78-b025-4ab9-9eeb-f0de8e2ab8ecn%40googlegroups.com<https://urldefense.com/v3/__https:/groups.google.com/d/msgid/projectchrono/bd150b78-b025-4ab9-9eeb-f0de8e2ab8ecn*40googlegroups.com?utm_medium=email&utm_source=footer__;JQ!!Mak6IKo!JMhU65su0jL56JW6EhtwR4b21GmLawvJZaORFk8TDRULx7v23tmz6zooMW5Ttt64xODC4lZYGDvrZ0BGMA$>. -- 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 visit https://groups.google.com/d/msgid/projectchrono/CH3PPF46CDC2185A64C679F26572E696FC0A782A%40CH3PPF46CDC2185.namprd06.prod.outlook.com.
