C12.-ensamble Del Vector De Cargas.pdf

ANALISIS ESTRUCTURAL AVANZADO Clase 12: Ensamble del Vector de Cargas

= P Pn + Pe   

VECTOR DE CARGAS (P)

Yg

Cargas en los nudos (Pn)

5 4

2

6

2 1

1

3

PY

8

10 t

7 3

20 t-m

14 4

13 15 4m

6m 10

12 4m

Nudo i

9

11

5

3m

Xg

PX i MZ

 Px  P in =  Py    M z   10  P1n = 0  =   −20 

 P1  P   2  P3 

Cargas en los elementos (Pe)

VECTOR DE CARGAS (P)

= P P +P  5  n

Yg

3 t/m 7.5 t

4

2

6

2

6.25 t-m

e

8

1

1

7

3

3

3m

6.25 t-m

FE1 2

FE3

7.5 t

FE2

9

FE6 3

14

6m

11

5

4

13 15 4m

10 12

4m

FE5

 FE1  Xg = P ie = FE 2    FE 3 

 0   7.5    6.25

FE4

 FE 4  = P ej = FE 5    FE 6 

 0   7.5     −6.25

P ie = − RT .FEi P ej = − RT .FEj       C − S 0   0   P4  C − S 0   0   P7        e  S C 0  .  7.5  = P  e P2 = −  S C 0  .  7.5  = P5  P = −  3       8   0 0 1  6.25  P6   0 0 1   −6.25  P9 

Preguntas…. ?