Table 5.5: Factored Load Combination for Bulk Material. ASME VIII Div 2

[Doodler3D]

Hi,

For a mixing vessel, how would the design margin of 2.4 be applied to the static load from a bulk material? The powder weight results in a nonlinear distribution of wall stress due to cohesive forces and wall friction. These distributions were calculated from Jansson/Jenike theory since the hydrostatic assumption is too conservative. Is it appropriate to apply the design margin directly to the material bulk density?

Thank you

 

[TGS4]

The Code does not specify how you apply P_s, just that you do. In your case, it would be comprised of a normal and tangential load/pressure/traction. You would then factor that by Beta, as indicated in Table 5.5.

Your approach appears to be reasonable.

 

[Doodler3D]

Thank you for confirming TGS4.