calcul stalp sect plina consthea280_6.6m_24
TRANSCRIPT
HEA280Lungimea l1 (cm) 660Forta axiala P1Momentul incovoietor M (t.m) 12.64Efort axial N (t) 18.2Taietoare T (t) 4.82SectiuniA (cm) 97.3Ai (cm) 18.4Ix (cm^4) 13670Iy (cm^4) 4760ix (cm) 11.9iy (cm) 7iyr (cm) 8.08Wx (cm^3) 1010Wy (cm^3) 340Calcul rapoartel2/l1P1/P2
0.70.7
Calcul lungimi de flambaj
462
462Verificare de rezistenta
1438.54Verificare de stabilitate
38.82
66.00
57.18
0.89
0.71
0.77
0.71
261.98 < 315
1891.51 < 2100
0.95
187.05 1375.09 0.86
2045.45
1438.54 261.96 1508.39
Stabileste coef m1 si m2 anexa 3 tab 3.21 daca l2/l1<0.6
P1/P2>3 sau tab. 3.17…3.20 pentru celelalte cazuri
m1m2
l1fx=m1*l1
l1fy=m1*l1
"smax=N/A+M/W"
lx<la
ly<la
lg<la
Stabileste coef f
fx
fy
fg
Stabileste coef fmin
Verifica cond. "N/fA<0.15*R"
Daca "DA" Verifica cond de stabilitate "N/f*A+M/fg*Wx<R"
Daca "NU" Stabileste coeficientul cx anexa 3 tab 3.26
Calculeaza "s=N/A; sEx=pi^2E/lx^2; nx=1-s/sEx"
Verifica cond. de stabilitate"N/f*A+cx*M/fg*Wx*nx<
R"
Verifica tensiunea echivalenta:"s'=N/A+Mx/Ix*y'; t=T/Ai;
sech=(s'^2+3*t^2)^1/2<1.1*R "