Dear Dr. Serban and Dr. Negrut, Thank you for your reply.
I have one clarification to make, I am using the function ReportTireForce() in the ChTireTestRig class. I wanted to clarify the meaning of the force terms. I am using the following function to get the force, auto Force = rig.ReportTireForce(); The Fx force, i.e. Forces.force.x() - is this the resistive force in the x-direction (Motion resistance), or is this the drawbarpull? Could you please help me out with this? Thank you, Sincerely, Jyotirmoy On Friday, March 31, 2023 at 1:13:34 PM UTC-4 Radu Serban wrote: > Ekansh, > > > > Both Dan and I already answered these questions. See the other thread with > my reply to Jyotirmoy’s post. > > > > --Radu > > > > > > *From:* [email protected] <[email protected]> *On > Behalf Of *Ekansh Chaturvedi > *Sent:* Wednesday, March 29, 2023 1:57 PM > *To:* ProjectChrono <[email protected]> > > *Subject:* Re: [chrono] Query regarding creating tire file in Chrono > > > > 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/d7c1ed34-ed78-4ee2-abc0-c46b0fa91b44n%40googlegroups.com > > <https://groups.google.com/d/msgid/projectchrono/d7c1ed34-ed78-4ee2-abc0-c46b0fa91b44n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "ProjectChrono" group. 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