how can i do a fatigue analysis under a fatigue sine sweep load?

Nicolò Lodini_21627
Nicolò Lodini_21627 Altair Community Member
edited January 2021 in Community Q&A

hi, i'm trying to setup a fatigue analysis of a component which is stressed by a sinusoidal force (frequency:100Hz).

On the ebook "fatigue analysis" i've found that in the FATLOAD i have to check the sweep. I've created a FATLOAD but i haven't got the sweep box,so i can't check it: image

 

I've tried to create a load history by excell: i've made a discrete sine curve by compiling the table with the angle on the left colunm and the load on the right column. Then i've exported that to ".txt", but how can i upload this load history?

image

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Answers

  • Adriano Koga_20259
    Adriano Koga_20259 New Altair Community Member
    edited January 2021

    Have your tried these tutorials first, in OptiStruct tutorials section?

     

    image

  • Nicolò Lodini_21627
    Nicolò Lodini_21627 Altair Community Member
    edited January 2021

    yes, but i haven't the sweep check

  • Adriano Koga_20259
    Adriano Koga_20259 New Altair Community Member
    edited January 2021
    Nicolò Lodini_21627 said:

    yes, but i haven't the sweep check

    what version of HyperMesh are you using? It might be due to the version that doesn't support yet, maybe.

    If you take a look here in 2020.1 i have this option.

    Do you have access to newer versions?

    image

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