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Fatigue - Transient Response Analysis

Hi,

I know that it is possible to use Transient Response Analysis as an input for Fatigue Analysis. In many cases, I can see people usually tend to apply magnitude load for EXCITED in TLOAD1 as a peak load and keep the scale number in TABLED1 below 1.

Is there any difference if I don't do that. for example, in case I apply EXCITED force as 1N and input my TABLED1 as data of Force vs Time, will affect the result ?? And if not, why in so many cases, people try to keep the data in TABLED1 below 1. Is there any specific reason for this??

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Altair Forum User

Hi @Toan Nguyen

Either way, it is correct. You can provide the force magnitude and a scale of 1 on tabled1 or the other way.

Many people use the former, maybe because they find it easy?

Beta

Thank you, Prakash. I thought the same way.

tinh

Maybe, use tabled1 as magnitude => with test data

But if you don't have any experiment value, you may want to vary a known load (peak) with factors by generating tabled1 => it's very convenient because we just need excel with function rand() to generate them