TPA Analysis

Sai Vignesh
Sai Vignesh Altair Community Member
edited October 2020 in Community Q&A

Hi

 

I am trying to learn TPA analysis in NVH 

 

Kindly someone help with reference deck and document about background process and post processing

 

Thanks in advance 

 

Regards

Sai Vignesh

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Answers

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited May 2019

    Please refer the attached files from OptiStruct online help.

    https://altairuniversity.com/learning-library/reducing-floor-vibrations-at-driver-seat-locations-of-body-in-white/

    Unable to find an attachment - read this blog

  • Sai Vignesh
    Sai Vignesh Altair Community Member
    edited May 2019

    Thanks for the material 

     

    Regards 

    Sai Vignesh V

  • Sai Vignesh
    Sai Vignesh Altair Community Member
    edited May 2019

    How about post processing steps do you have documentation what will be output and how to process for the same example

     

    Thanks for your help in advance

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited May 2019

    Please refer below HyperWorks Insider link for Transfer Path Analysis. This is a bit of old material but worth reading.

    https://insider.altairhyperworks.com/transfer-path-analysis/

     

  • Shri
    Shri New Altair Community Member
    edited August 2019

    Hi @Rahul R 

     

    From the demo file i got the Response and  Path contribution as mentioned in the tutorial. If i need the Input Force, Transfer Function and Point of Mobility means i need to request GPFORCE or SPCFORCE for the connection points right. 

     

    If i request that GPFORCE means i getting an error

      *** ERROR # 2869 ***
     The grid 1130488 associated with component 1 does not have any reaction
     forces. It is likely that the element set (CONEL) or RIGID set (CONREL)
     specified in PFPATH does not contribute any reaction force to this
     degree of freedom.

     

    How to extract the Input force, transfer function and Point of Mobility results??

     

    Regards 

    Shrinaath 

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited August 2019

    GPFORCE is not necessary for one step TPA, and pfpath can deal with this internally. In HyperView ,ensure that the NVH Utilities are loaded from the Preferences menu.This should help you to get the Input Force, Transfer Function and Point Mobility. PFA material for post processing using NVH utilities.
      

    <?xml version="1.0" encoding="UTF-8"?>Point Mobility.JPG

    Unable to find an attachment - read this blog

  • Shri
    Shri New Altair Community Member
    edited August 2019

    Thanks @Rahul R

     

    This is fine at particular frequency  we are getting the magnitude of Transfer Function, Input force and Point of mobility. But if we need a Transfer Function for all over frequency for each node with the each direction as we get in Two Step TPA. is that possible in One Step TPA ??

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

  • Shri
    Shri New Altair Community Member
    edited August 2019

    Hi @Rahul R

     

    I am not able to extract the Magnitude of Transfer Function and input force in one step TPA as shown in image. please check the file.

     

     

    Can you share the One step TPA Result file and which result file format will support the One step TPA

     

    <?xml version="1.0" encoding="UTF-8"?>TPA_one_result.PNG

    Unable to find an attachment - read this blog

  • Shri
    Shri New Altair Community Member
    edited August 2019

    Hi @Rahul R

     

    why this error is coming can please check it 

     

  • Nirbhay_22070
    Nirbhay_22070 Altair Community Member
    edited March 2020

    Hello,

     

    @Shri. I am also working on the transfer function. I am also getting same error, i.e 'expected floating-point number but got'. 

     

    Did you find the solution? Please help me with it.

     

    regards

    Nirbhay 

  • Sidharth92
    Sidharth92 New Altair Community Member
    edited June 2020

    Hi All, 

     

    I am trying to learn TPA analysis in NVH 

     

    Kindly someone help with reference deck and document about background process and post processing. I have tried to download attachments but either it's removed or not available. Please do the needful. Or else any one please share me on my mail-ssadhikari01@gmail.com. Your help will be highly appreciated.. 

     

    Thanks in advance 

     

    Regards

    Sidharth 

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