Acoustic Analysis with Optistruct - radiated sound using infinite elements

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

I am trying to run an example, provided by altair on their help page, about vibroacoustic interaction and wave propagation using infinite elements CACINF3. The link to the page is:

https://altairhyperworks.com/hwhelp/Altair/2017/help/os/topics/solvers/acoustic_analysis_of_speaker_os_example_r.htm#results

 

However, I am unable to run the problem using optistruct 2017.

The error message given is:

image.png.49b349fb82321285416507ca5c2ad936.png

 

The model file follows attached.

 

 

Unable to find an attachment - read this blog

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Answers

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited December 2018

    Above shared model runs fine at my end with latest solver OptiStruct 2018.0.1 patch.PFA h3d and out files for your reference.

    Unable to find an attachment - read this blog

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2018

    I do not have access to the latest solver patch. I am using OptiStruct 2017.2.

    However, the model was supossed to run with this solver. The link I have provided is from the 2017 help page.

    Am I missing something?

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited December 2018

    Shared file runs fine with OptiStruct 2017.2.4 patch. I also see in the resolved issue list of OptiStruct 2017.2.3 which takes about Infinite element. PFA screenshot for same.

    <?xml version="1.0" encoding="UTF-8"?>infinite element.JPG

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