Roller bench test for motorcycle

Hung Tran
Hung Tran Altair Community Member
edited October 2020 in Community Q&A

Dear,

 

I try to model the Roller bench test system for motorcycle. The same with the picture below : 

 

 

The roller is rotate with speed 100RPM. 

Could anyone help me find the way to model the interactive between tyre and road(roller ). 

I want to use MF-tyre but i dont know how to do it. 

 

Many thanks !

 

<?xml version="1.0" encoding="UTF-8"?>test.png

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Answers

  • Chris Coker_21312
    Chris Coker_21312 New Altair Community Member
    edited March 2020

    MF-Tyre supports a drum type road profile.  A sample is included in the default installation, inside the same folder with sample files for MF-Tire.

    The location of the directory will be similar to this:

    C:\Program Files\Altair\2019.1\hw\mdl\autoentities\properties\Tires\MF_SWIFT

    When you set up the model using AutoTire, you simply point the tire to use this drum road file.  The properties of the drum itself can be modified by editing that road file.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited March 2020

    Hello,

    In continuation to Chris's response, attached is an example MDL file created in HW2019.1. You need to browse the tire and road property files again before solving.

    Refer to the MF-Tyre documentation for more details.

    Hope this helps in setting up your model.

    Thanks.

    Unable to find an attachment - read this blog

  • Hung Tran
    Hung Tran Altair Community Member
    edited March 2020

    Dear Chris and Raghavendra, 

    Many thank for the document from Chris and an example from Raghavendra, it's very useful. 

    And i have read about drum road from the MF_SWIFT file that included in the default installation, but it's not too detail to understand clearly. 

    I also have some questions, please help me :

     

    1. Can we using 2 cleats in each drum road. (Because in my case, each drum have 2 cleats).

    2. In drum_road.rdf, the minimum value of drum_radius is 1000 mm , isn't it ? How can i define the drum that have a lower value of radius ?

    3. In drum_road.rdf have a sub-block (XZ_DATA) that consist of two columns to define the dimentions and shape of the obstacle, so what is the system coordinate of these parameters. (Global system or obstacle's symetrical system ) .

    4. Could you explain for me about DRUM_X_COORD_DRUM_CENTER and DRUM_Y_COORD_DRUM_CENTER. Follow the doccument from default installation, it's x and y-coordinate of drum center in global coordinate. But in my case have two wheels, i set 2 drum roads, both i set the two parameters above equal 0 (it's not global coordinate) and my case run without problem. 

    Is it some conflict with default installation documents ? 

    5. I use road tools to create graphic for drum road, but it has an error : FILE DATA IS NOT VALID. 

    How can i handle this error ?

    If we can't create graphic for drum  road, so is it have any method to see the behavior of drum road ? 

     

    I hope that you will help me as soon as possible.

     

    Many many thank for you ! 

     

    <?xml version="1.0" encoding="UTF-8"?>picture.png

  • Chris Coker_21312
    Chris Coker_21312 New Altair Community Member
    edited March 2020

    Most of your questions would be answered by reading the MF-Swift documentation.

     

    Your question #5 has been answered in a previous thread.

  • pramodh k
    pramodh k New Altair Community Member
    edited May 2020

    Hi, I am Pramodh. I looked into your project and it was helpful. I am trying to simulate rolling of cycle tire on road.

    Could you help me on how this rolling motion can be defined in MotionSolve? Thank you.

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