CALCS PROC031
OUTSTANDING FLANGES, LOCAL BUCKLING

NOTATION

Fcr 1one fixed edge, one free
Fcr 2one s.s. edge, one free
bwidth, flange
tthickness, flange

APPLICATION

Beams or columns

OUTPUT

Free edge critical stability stress

SEE ALSO

PROC035 PROC039

THEORY

Roark5, Page425 and t35i1d

GUIDANCE

guidance notes

INPUT FORMAT

LET Nm=:Nk=:b=:t=:fd=:PROC031

EXAMPLE

Call Statement

LET Nm=1:Nk=1:b=20:t=.9:fc=1.9:PROC031

Output

PROC031 FLANGE, FREE EDGE STABILITY, Rev 280995
Fcr1= 1.09*E(Nm)*(t/b)^2/(1-v(Nm)^2)= 5.021
Fcr2= .416*E(Nm)*(t/b)^2/(1-v(Nm)^2)= 1.916
UF= ABS(fd)/(Kcr(Nk)*Fcr1)= 0.3721
UF= ABS(fd)/(Kcr(Nk)*Fcr2)= 0.9751
END031