From A/Chassis, I am referring Req/1051~43 for Tire Force & Moment data from vehicle data set. When I checked these Lateral Forces at 4 corners during a constant radius, they were shown as sine-wave-like oscillation around zero-value with a sizeable magnitude equivalent to a given slip angles. (same for Fx, except values for z-axis) I believe this is caused from these F&M values are being reported with a global reference marker... not a vehicle-fixed marker like a CG. Any thought on this? And what to do if F&M data is wanted to be reported in vehicle orientation? (No source code of Req/Subroutine is open to public.)
Yuan, while the original question is being investigated, may I ask to investigate in which coordinate system these F&M are handled? For example, PAC2002 tire model is by ISO coordinate with a vehicle model of SAE vehicle coordinate in A/Chassis. Is an ISO tire model converted into SAE , simulated in SAE and reported in SAE, while SAE-based tire model is being used directly without conversion? Or everything is ISO-based nowadays?
Yuan, while the original question is being investigated, may I ask to investigate in which coordinate system these F&M are handled? For example, PAC2002 tire model is by ISO coordinate with a vehicle model of SAE vehicle coordinate in A/Chassis. Is an ISO tire model converted into SAE , simulated in SAE and reported in SAE, while SAE-based tire model is being used directly without conversion? Or everything is ISO-based nowadays?