Thanks for your email Dr. Negrut. I really appreciate it. I am trying to set up a passenger car tire and test it on the sandy loam terrain. I am using ChTeameasy class to make a tire file where we can input inflation pressure. There it asks for two values namely Inflation Pressure design and Inflation pressure use. To make the tire file, I copied an existing passenger car tire file (sedan), erased all the data except the mass, inertia and tire's dimensional data, and included "Inflation Pressure design [Pa]" and "Inflation Pressure use [Pa]" , as per the online documentation.
When I simulated the same on the rigid terrain, with different values of inflation pressures, I got descent results in terms of Fx, Fy and Fz (using ReportTireForces). However, when I am trying to simulate on the sandy loam terrain (using SetTerrainSCM), I am getting exactly same values that I got with rigid terrain, which doesn't make sense. Further, changing inflation pressures with soil terrain does not change the output results and I see no deformation in soil terrain mesh (which is clearly visible when I run the demo file). Since I copied the exact line of code for setting soil terrain from a demo file, I am not sure if the problem in the tire file or I am missing something while setting the terrain. I am unable to figure out where the problem lies. Please share your thoughts on the same. My apologies for a lengthy email. I really appreciate your help. Have a great day! Sincerely Ekansh On Tuesday, March 28, 2023 at 10:59:05 PM UTC-4 Dan Negrut wrote: > Hi Ekansh, > > Can you spell out, step by step, how you went about implementing your > solution? > > How do you envision the flow of the work process, its steps? Not the gory > details, but high level approach. > > > > Also, what type of tires do you plan to model? > > On-road or off-road? > > Of the tire models available in Chrono, what model[s] do you plan to use? > > > > Thank you, > > Dan > > --------------------------------------------- > > Bernard A. and Frances M. Weideman Professor > > NVIDIA CUDA Fellow > > Department of Mechanical Engineering > > Department of Computer Science > > University of Wisconsin - Madison > > 4150ME, 1513 University Avenue > > Madison, WI 53706-1572 > > 608 772 0914 <(608)%20772-0914> > > http://sbel.wisc.edu/ > > http://projectchrono.org/ > > --------------------------------------------- > > > > *From:* [email protected] <[email protected]> *On > Behalf Of *Ekansh Chaturvedi > *Sent:* Tuesday, March 28, 2023 3:23 PM > *To:* ProjectChrono <[email protected]> > *Subject:* [chrono] Query regarding creating tire file in Chrono > > > > Hi, > > > > Hope this email finds you well. > > > > We are using Chrono to conduct an on-rig analysis of different tires and > we are pretty new to using Chrono. We are stuck while trying to create a > custom tire file that takes tire inflation pressure in units of pressure, > along with the other structural dimensions, as an input . It's been a month > and we are still trying to figure that out. We have realized that we cannot > waste time anymore on trying ourselves as the deadlines are coming close, > and we need help. > > > > We would really appreciate it if you could help us out with this > through a zoom meeting. Please share your availability and feel free to let > us know if you have any questions or concerns. > > > Thanks and regards, > > Sincerely, > > Ekansh Chaturvedi > > Graduate Student, > > Terramechanics, Multibody and Vehicle Systems Laboratory (TMVS), > > Computational Sciences Laboratory (CSL), > > Department of Mechanical Engineering > > Virginia Tech > > -- > 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/59213b89-e620-4736-8137-2eaf5a756822n%40googlegroups.com > > <https://groups.google.com/d/msgid/projectchrono/59213b89-e620-4736-8137-2eaf5a756822n%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/b5001364-cd79-4bde-a50a-273dd567596cn%40googlegroups.com.
