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diagrama_mf_y_fc,Carmen(1)
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diagrama_mf_y_fc,Carmen(1)
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Author:
Christian Delgado Chavarri
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PROBLEMA 01: HALLAR DMF Y DFC Si: La carga aplicada W es: La longitud L de la viga es :
100 kg/m 10 m
100 10 0 kg/m kg/m
10 m
) Hallamos las reacciones en el empotramient
100 10 0 kg/m kg/m MA
Ay
10 m Ay MA
= =
50 0 k g 666.667 kg k g/m
2) Hallamos la fuerza normal, cortante y momento
0 ≤ x ≤ 10
w' M
MA N Ay V
x
w'/x = P/L w' =
N
=
10 x
0
V
=
500
- w' x -
V
=
500
M
=
50 0 * x
--
500 *
-
M
=
10 x^2
x
666.667
- w' x*x/3
666.67-
3.33
2 4 60 306.7
3 41 0 7 4 3 .3
*
x^3
2) DFC Y DMF x V M
0 1 50 0 4 90 -666.7 -170.0
DFC 600 400 200 0 -200 -400 -600
DMF 2000.0 1500.0 1000.0 500.0
4 34 0 1 1 2 0 .0
-500.0 -1000.0
MA
Ay
MA
Ay
5 250 1416.7
Row 60
Row 61
6 140 1613.3
7 10 1690.0
8 -140 1626.7
9 -310 1403.3
10 -500 1000.0
PROBLEMA 02: HALLAR DMF Y DFC Si: La carga aplicada P es: La longitud a de cada tramo es:
100 N 10 m
100N
A
B
10 m
C
10 m
D
10
100 N
D
m
E
10 m
1) Hallamos las reacciones en cada apoyo
100N
Ay
Cy
Cy
Ax Cx
A
B
C
10 m
∑MA
=
-
+ Cy
Cy
= ME
100 N 50 N
100 N
Ey
∑ME
10
0
Ay
Ey
10 m
50 N
= Ay
D
0
Cy
∑Fy
Cx
150 N
0 2000 N.m
) Tramo AB 0≤ x ≤10 M
N
=
V
=
M
=
N Ay V
Ay V x
) Tramo BC 0≤ x ≤10 100N
M
N
=
V
=
M
=
N
=
V
=
M
=
N
=
V
=
M
=
N Ay V x
10 m
) Tramo ED 0≤ x ≤10
M
ME N Ey V x
) Tramo DC 0≤ x
10
100N M
ME N Ey V x
10 m
6) DFC Y DMF x
-50 0
-50 1
-50 2
-50 3
-50 4
MAB
0
50
100
150
200
VAB
10
x
A
DFC 200
150
100
50
0
-50
-100
DMF 1000 500 0 -500 -1000 -1500
9
8
B
7
C
6
D
-2000 -2500
Ey
100N
ME Ex Cx
D
E
m
10 m
0 -50 50 x
0 50 500 + X (
-50 )
0 150 -2000 + X (
150 )
0 50 -500 + X (
50 )
-50 5
-50 6
-50 7
-50 8
-50 9
-50 10
50
250
300
350
400
450
500
500
10
5
D
4
3
2
1
E
Row 91
Row 102 Row 94
0
50
50 11
450
50 12
400
50 13
350
50 14
300
50 15
250
16 200
50
50 17
150
50 18
100
50 19
50
50 20
0
50 20
21
0
-50
50
50
50
50
50
50
22
23
24
25
26
27
-100
-150
-200
-250
-300
-350
50
50
50
150
28
29
30
-400
-450
-500
150 30
-500
150 31
-650
32 -800
150
150 33
-950
150 34
-1100
150 35
-1250
150 36
-1400
150 37
-1550
38 -1700
150
150 39
-1850
40 -2000
PROBLEMA 03: HALLAR DMF Y DFC Si: La carga aplicada q0 es: La longitud L es:
L =
100 N 10 m
10 m
1) Usamos:
2) Integrando obtenemos:
3) Los valores anteriores on equivalentes a:
3) Determinamos C1 yC2
4) Finalmente obtenemos
5) Tabulando valores hallamos los diagramas de fuerza c x V M
0 159.15 0.00
2 49.18 -240.91
2.5 0.00 -253.30
3.33 -79.58 -219.37
200.00 150.00 100.00
DFC
50.00 0.00 -50.00 -100.00 -150.00 -200.00
300.00 200.00 100.00
DMF
0.00 -100.00 -200.00 -300.00
rtante y momento fle 5 -159.15 0.00
6.67 -79.58 219.37
8 49.18 240.91
10 159.15 0.00
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