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Author Topic: Can't Apply Limit and Ultimate Factors to Thermal Load Sets  (Read 334 times)

MatthewZiglar

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Can't Apply Limit and Ultimate Factors to Thermal Load Sets
« on: February 09, 2021, 05:11:09 PM »
I noticed that I can't apply a limit and ultimate factor to thermal load sets. Why is this? For combined loads, according to the NASA Requirement I need to follow, for combined loads I apply a 1.0 limit factor to mech and thermal and a 1.4 ultimate factor to mech and thermal. How can I scale the thermal loads for limit and ultimate individually? When I do load combinations I could apply a scale factor but then my limit margins would have 40% high thermal load contribution.
I've also considered applying a 1.4 Thermal Hurt factor, but that would have the same affect of applying to both limit and ultimate MS calculations. Is there a way around this?

Thanks,
Matthew