I want to run a linear static finite element analysis on a global airplane model and capture the critical loading conditions.

Meaning, the payload and fuel masses may change position and magnitude depending on the load case and flight condition.

Does anyone know how I can capture all of the masses accurately for each load case in the same finite element model while ignoring the masses that do not apply to that specific load case? Essentially, I am looking for the capability to turn off/on masses for each load case (sub-case, load-step).

I know this question gets a bit into the weeds of FEA, but if anyone has encountered and solved this issue, I would love to hear about their approach regardless of what software or method was used.


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