Oscilador de Duffing forzado

1. Jose Luis Leon Aguirre
Código fortran 90
PROGRAM OSCILADOR
INTEGER::I
REAL::X(10000),Y(10000),T(100000),H,E,F,Z
OPEN(1,FILE='DATA4.TXT')
X(0)=0.3
Y(0)=0.1
T(0)=0.1
H=0.01
E=1.0
F=1.3
Z=0.6
DO I=1,10000
T(I+1)=T(I)+H
Y(I+1)=Y(I)+(-X(I)-E*(X(I)**3)+F*SIN(Z*T(I)))*H
X(I+1)=X(I)+Y(I)*H
WRITE(*,*)T(I),X(I),Y(I)
WRITE(1,*)T(I),X(I),Y(I)
END DO
END

2. -2.50E+00
-2.00E+00
-1.50E+00
-1.00E+00
-5.00E-01
0.00E+00
5.00E-01
1.00E+00
1.50E+00
2.00E+00
2.50E+00
-2.00E+00-1.50E+00-1.00E+00-5.00E-010.00E+005.00E-011.00E+001.50E+002.00E+00
Z=0.7
-2.00E+00
-1.50E+00
-1.00E+00
-5.00E-01
0.00E+00
5.00E-01
1.00E+00
1.50E+00
2.00E+00
-2.00E+00-1.50E+00-1.00E+00 -5.00E-01 0.00E+00 5.00E-01 1.00E+00 1.50E+00 2.00E+00
Z=0.6

3. Análisis tiempo vs distancia
-2.50E+00
-2.00E+00
-1.50E+00
-1.00E+00
-5.00E-01
0.00E+00
5.00E-01
1.00E+00
1.50E+00
2.00E+00
2.50E+00
-2.00E+00-1.50E+00-1.00E+00 -5.00E-01 0.00E+00 5.00E-01 1.00E+00 1.50E+00 2.00E+00
Z=0.5
-2.00E+00
-1.50E+00
-1.00E+00
-5.00E-01
0.00E+00
5.00E-01
1.00E+00
1.50E+00
2.00E+00
0.00E+00 2.00E+01 4.00E+01 6.00E+01 8.00E+01 1.00E+02 1.20E+02
Z=0.5

4. Análisis tiempo vs distancia
Cuando se toma valores de Z=1.1 para más arriba los valores toman
grandes valores
-8.00E+00
-6.00E+00
-4.00E+00
-2.00E+00
0.00E+00
2.00E+00
4.00E+00
6.00E+00
8.00E+00
-4.00E+00-3.00E+00-2.00E+00-1.00E+00 0.00E+00 1.00E+00 2.00E+00 3.00E+00 4.00E+00
Z=1.0
-4.00E+00
-3.00E+00
-2.00E+00
-1.00E+00
0.00E+00
1.00E+00
2.00E+00
3.00E+00
4.00E+00
0.00E+00 2.00E+01 4.00E+01 6.00E+01 8.00E+01 1.00E+02 1.20E+02
Z=1.0

5. Análisis tiempo vs distancia
-1.60E+22
-1.40E+22
-1.20E+22
-1.00E+22
-8.00E+21
-6.00E+21
-4.00E+21
-2.00E+21
0.00E+00
2.00E+21
-1.00E+13 0.00E+00 1.00E+13 2.00E+13 3.00E+13
Z=1.1
-5.00E+12
0.00E+00
5.00E+12
1.00E+13
1.50E+13
2.00E+13
2.50E+13
0.00E+00 2.00E+01 4.00E+01 6.00E+01 8.00E+01 1.00E+02
Z=1.1