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Ejemplo Barras - Metodo Rigideces (2)
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EJEMPLO
MATRIZ DE FUERZAS F MATRIZ DE DESPLAZAMIENTOS
F X1 ? ∆ X1 -
F Y1 ? ∆ Y1 -
F X2 10.00 ∆ X2 ?
F Y2 - ∆ Y2 -
F X3 10.00 ∆ X3 ?
F Y3 - ∆ Y3 -
0° 0°
1 3
2 10 10
4.80 m 4.80 m
BARRA 1-2 BARRA 2-3
θ - ° θ - °
A 0.0005 m A 0.0005 m
E 2.00E+08 kg/m2 E 2.00E+08 kg/m2
L 4.80 m L 4.80 m
BARRA 1-2 BARRA 2-3
senθ - senθ -
cosθ 1.00 cosθ 1.00
AE/L 20833 AE/L 20833
MATRIZ DE RIGIDEZ K - PARCIAL MATRIZ DE RIGIDEZ K - PARCIAL
2.08E+04 0.00E+00 -2.08E+04 0.00E+00
0.00E+00 0.00E+00 0.00E+00 0.00E+00
-2.08E+04 0.00E+00 2.08E+04 0.00E+00 2.08E+04 0.00E+00 -2.08E+04 0.00E+00
0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00
-2.08E+04 0.00E+00 2.08E+04 0.00E+00
0.00E+00 0.00E+00 0.00E+00 0.00E+00
K
2.08E+04 0.00E+00 -2.08E+04 0.00E+00 0.00E+00 0.00E+00
0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00
-2.08E+04 0.00E+00 4.17E+04 0.00E+00 -2.08E+04 0.00E+00
0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00
0.00E+00 0.00E+00 -2.08E+04 0.00E+00 2.08E+04 0.00E+00
0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00
K K K -1
4.17E+04 -2.08E+04 4.80E-05 4.80E-05
-2.08E+04 2.08E+04 4.80E-05 9.60E-05
4.17E+04 -2.08E+04
-2.08E+04 2.08E+04
K -1
4.80E-05 4.80E-05
4.80E-05 9.60E-05
F
0.00E+00 F X1
0.00E+00 F Y1
1.00E+01 F X2
0.00E+00 F Y2
1.00E+01 F X3
0.00E+00 F Y3
∆ = K -1 F
0.00E+00 u1
0.00E+00 v1
9.60E-04 u2
0.00E+00 v2
1.44E-03 u3
0.00E+00 v3
X = K ∆
-20.00 X1
- Y1
10.00 X2
- Y2
10.00 X3
- Y3
DATOS
SOLUCION
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