Thermal Load

[eunjucha]

Hi,

I would like to know the formula of thermal load for steel you have on load definition based on BS5950 and BS8110.

i try to put the temperature difference of dT 10C in TZ direction and run annalysis.

i expect the emperature induced loads accounted for 10% to 20% of the total axial load though, it does account less than 1 to 2 % of the total axial load in the results.

i have the formula of it , Pt, which is following

Pt = 1.2xk x A x E x (12x10-6) x TD

1.2 = load factor

k = Thermal expansion factor = 0.8

A = Gross area of section of steel

E =Modulus of Elasticity of steel =  205 kN/mm2

TD = temp difference (C)

please help me up to solve that problem.

thanks and regards,

EunJu

[Artur.Kosakowski]

You should define TX instead. TZ (or TY) being the difference of temperature between top and bottom (left and right) fibers cause bending rather than tension/compression. See http://docs.autodesk.com/RSA/2012/ENU/filesROBOT/GUID-E4AB6038-D264-45C9-80F9-B06BC687794-448.htm

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