Frame analysis factor of safety equation

[mfurches]

I know frame analysis will not directly give you a factor of safety.  Using the formula FOS = Ffail / Fallow  can we determine the FOS by dividing the yield strength of the material by the normal stress smax number ?  I'm tagging @JDMather  here hoping he can give me some direct help.

[JDMather · Accepted solution]

Yes.

FoS=Sy/Smax

[jskim00]

smax is maximum normal stress, what does sy mean?

[JDMather]

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@jskim00 wrote:

smax is maximum normal stress, what does sy mean?

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Strength at Yield (Yield Strength).

[jskim00]

Hello thanks for the answer.
but, Why can't check von mises in result of frame analysis