Plastic shear resistance of steel pipes
Plastic shear resistance of steel pipes
(OP)
Any reference on how to derive the plastic shear resistance of a steel pipe given by the expression'
Vp = 4rt(Fy/sqrt(3))where Fy/sqrt(3)is the Von Mises yield criterion
Vp = 4rt(Fy/sqrt(3))where Fy/sqrt(3)is the Von Mises yield criterion





RE: Plastic shear resistance of steel pipes
RE: Plastic shear resistance of steel pipes
3.14rt(Fy/sqrt(3)), not 4rt(Fy/sqrt(3))
Why I'm geting this difference? 3.14 instead of 4?
RE: Plastic shear resistance of steel pipes
for half circumference on positive y halfspace
alfa(x)=acos((r-x)/r)
useful component of the area (its component along shear, here along x)
= t·integral between 0 and 2r of
( r·sin(alfa(x))· (d(alfa(x)/dx)· dx)
= 2rt
twice that 4rt
RE: Plastic shear resistance of steel pipes
So for a flexure setup looks quite adequate. For beamcolumn maybe the concurrence of compressive or tensile forces at the center of the section should be studied in interaction. Not looking any code, just thinking.