CALCS PROC036
RECTANGULAR PLATE, ELASTIC STABILITY, SHEAR

NOTATION

alength, plate
bwidth, plate
tthickness, plate
Kcstability coefficient
Fcrstress, critical

APPLICATION

Thin webs of generally rectangular form

OUTPUT

Stability critical stress

SEE ALSO

PROC014 PROC022 PROC035

THEORY

Roark5 Table35 Item4a & LR LAMH Code Para2.22

GUIDANCE

Formula for Fcr varies with Fcr < or > .29*Fy

INPUT FORMAT

LET Nm=:Nk=:a=:b=:t=:fs=:PROC036

EXAMPLE

Call Statement

LET Nm=1:Nk=1:a=41:b=26:t=.8:fs=1.4:PROC036

Output

PROC036 EL.STABILITY, RECT.PLATE, SHEAR, Rev 180995
Kc= .9123*(a/b)^4-8.638*(a/b)^3+29.59*(a/b)^2-44.22*(a/b)+30.1= 5.719
Fcr= Kc*E(Nm)*(t/b)^2/(1-v(Nm)^2)= 12.32
Fcr= .58*Fy(Nm)*(1-.58*Fy(Nm)*(1-v(Nm)^2)/(4*Kc*E(Nm)*(t/b)^2))= 1.946
UF= fs/(Kcr(Nk)*Fcr)= 1.0741.074
END036