BAJA/SAE engine support

AcostaAcosta Member
edited August 2020 in Student Competition

Hello,I'm simulating the engine support for my team's BAJA/SAE.

I have coupled static structural, modal and random vibration simulation. However, I had never used random vibration before and wanted to know if I am doing it wright.

We know that the engine will have a maximum vibration of 85 Hz, so in my PSD displacement tabular data I used frequency values between 1 and 85 Hz, for the displacement I used my stactic structural maximum deformation. Is this the wright way to do it ?

Ps: I tryed using my modal data in the psd, but those vibrations are between 200 and 650 Hz, driving to some bad results.

English is not my first language, please excuse any mistakes.

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Best Answers


  • I am not able to access the the material in the link, are there any other materials you wold recommend, please?

    The forces and fixed supports I am aplying in the static analysis don't interfere in the PSD result?

    Thank You for the fast reply, @HuiLiu 😀

  • Hello,

    I'm moving this discussion to the 'Student Competition' category.

    Also, to access the help on student product, please follow the steps outlined in this post.

    Please see if this helps.



  • Hello @peteroznewman,

    Thanks for the reply, I think I couldn't have had a better one.

    I was told the engine vibration was obtained by a aproximation previously made, however, I just got in the baja team, and don't really know how it was made.

    Do you think there is no way to do a random vibration analysis without building the engine support?

    Also, do you think any other kind of simulation would be necessary for a good analysis ?

    Thanks man, you were really helpful!

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