eng01140_08 grelhas
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ENG01140 Turma C (Prof. Alexandre Pacheco)
24
8 TRAADO DE DIAGRAMAS DE SOLICITAES INTERNAS: GRELHAS
Abordagem Analtica:
S1(x), 0 x L/2: T(x) = R1 V(x) = R3 M(x) = + (R3)(x) R2 S2(x), L/2 x L: T(x) = R1 V(x) = R3 M(x) = + (R3)(x) R2 + M S3(x), 0 x L/2: T(x) = 0 V(x) = (W)(x) M(x) = (W)(x)(x/2)
W
M
R1
R2
R3
A
B C
x
x S1(x)
S2(x)
x
S3(x) Fibras
inferiores
W
M
R1
R2
R3
A
B C
M
W
L/2
L/2
L/2
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ENG01140 Turma C (Prof. Alexandre Pacheco)
25
V
M
Abordagem por Inspeo:
V2 = R3 = V1
M1 = (V1)(L/2)/2
W
M
L/2
L/2
L/2
R1
R2
R3
A
B C
T
M4 = M3 (V1)(L/2)
V1 = (W)(L/2)
T1 = R1 = T2
T2 = (W)(L/2)(L/4)
M2 = 0 (V1)(L/2)
M3 = M2 M