• Author / Uploaded
• Oscar Alain Bastidas

• Categories
• Camión
• Gestión de la cadena de suministro
• Ingeniería
• Tecnología
• Economias

Citation preview

Unidad 3. Caso 3 Diseño de rutas, Cadena de suministro Objetivo:  

Activar pre-saberes relacionados a las clases de IO, PCP. Diseñar rutas de distribución eficientes.

Este caso fue tomado del libro LOGISTICA, ADMON DE LA CADENA DE SUMINISTRO DE R BALLOU y modificado para servir de base de discusión.

_______________________________________________________________________________ Regal Metals fabrica mamparas de acero para lavabo destinadas a edificios comerciales. Una vez a la semana, los pedidos (X = 460, Y = 720) se acumulan en la planta de Toledo, Ohto, para su distribución a los sitios de construcción. La empresa posee cinco camiones con una capacidad de carga de 40,000 Ibs (18 toneladas) cada uno. Para una semana en particular, tienen que hacer los siguientes repartos:

Los camiones se tienen que programar de tal manera que todos los pedidos de la semana se envíen de una vez, comenzando no más pronto que las 7:00 a.m. en Toledo, que las capacidades de los camiones no se excedan y que todos los camiones regresen a la planta de Toledo cuando la ruta se haya completado. Las restricciones adicionales son que todos los repartos tengan que hacerse entre las 7:00 a.m. y las 6:00 p.m., que los conductores tengan un descanso de una hora para comer, después de las 12 del mediodía, y una pausa en la noche (de 12 horas), después de las 7:00 p.m., y que haya una barrera de viaje impuesta en la región de los Grandes Lagos. La velocidad promedio de conducción es de 50 millas por hora, y el tiempo para descargar en cada parada es de 30 minutos. Las distancias de las carreteras se estiman que son 21% más largas que si fueran en línea recta, distancias coordenadas por computadora. Los costos de conductor y camión son de $1.30 por milla. Cuando no están viajando, los conductores son asignados a otros trabajos en la planta.

Establece la ruta óptima. Elabora el Arena.

Este caso pretende fomentar el debate y aplicación de diseño de rutas (cadena de suministro). De ninguna manera representa la forma ideal de solucionar el problema aquí planteado. Adaptado Por [email protected]

Solución:

Salida de datos

ROUTER SOLUTION REPORT Label- freddy Date- 02/12/2011 Time- 03:21:51 p.m. *** SUMMARY REPORT *** TIME/DISTANCE/COST INFORMATION Route no 1 2 3 4 5 Total

Route Run Stop Brk Stem time, time, time, time, time, Start Return No of Route hr hr hr hr hr time time stops dist,Mi 30.7 15.7 1.0 14.0 13.8 07:00AM 01:44PM 2 787 27.2 12.2 1.0 14.0 6.0 07:00AM 10:11AM 2 609 58.1 30.1 2.0 26.0 12.7 07:00AM 05:03PM 4 1503 56.4 28.4 2.0 26.0 13.4 07:00AM 03:22PM 4 1418 56.7 29.2 1.5 26.0 21.1 07:00AM 03:40PM 3 1459 229.0 115.5 7.5 106.0 67.0 15 5777

Route cost,$ 1023.71 792.07 1953.88 1843.95 1896.61 7510.23

VEHICLE INFORMATION Route Veh Weight Delvry Pickup Weight Cube Delvry Pickup no typ capcty weight weight util capcty cube cube 1 1 40000 34500 0 86.3% 9999 0 0 2 2 40000 23250 0 58.1% 9999 0 0 3 3 40000 28500 0 71.3% 9999 0 0 4 4 40000 26250 0 65.6% 9999 0 0 5 5 40000 26250 0 65.6% 9999 0 0 Total 200000 138750 0 69.4% 49995 0 0

Cube util .0% .0% .0% .0% .0% .0%

Vehicle description TRUCK - 1 TRUCK - 2 TRUCK - 3 TRUCK - 4 TRUCK - 5

DETAILED COST INFORMATION Route no 1 2 3 4 5 Total

--------Vehicle-----------Total Fixed Mileage cost,$ cost,$ cost,$ 1023.71 .00 1023.71 792.07 .00 792.07 1953.88 .00 1953.88 1843.95 .00 1843.95 1896.61 .00 1896.61 7510.23 .00 7510.23

------------Driver---------------Total Fixed Regular Overtime cost,$ cost,$ time,$ time,$ .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00 .00

*** DETAIL REPORT ON ROUTE NUMBER 1 *** A TRUCK - 1 leaves at 7:00AM on day 1 from the depot at Toledo OH

Stop No description 2 Chicago 1 Milwaulkee Depot

Arrive time -->Break 01:19PM 03:49PM -->Break -->Break 01:44PM

Stop No description

Stop Drive Distance Time Depart time to stop to stop wind Day time Day Min Min Miles met? 60 minutes 1 01:49PM 1 30 319.4 266 YES 1 04:19PM 1 30 119.7 100 YES 720 minutes 60 minutes 2 ------- -- --505.8 421

Stop volume Weight Cube

Capacity in use Weight Cube 86.3% .0% 2 Chicago 31500 0 -72.17 .0 7.5 .0 1 Milwaulkee 3000 0 331.59 .1 .0 .0 Totals Weight: Del = 34500 Pickups = 0 Cube: Del = 0 Pickups = 0 Route time: Driving Load/unload Break Total

15.7 hr 1.0 14.0 30.7 hr

Max allowed

9999.0 hr

Route costs: Driver (reg time) Driver (over time) Vehicle (mileage) Fixed Total

Inc cost to serve stop In $ In $/unit

Distance: To 1st stop From last stop On route Total Max allowed

266 mi 421 100 787 mi 9999 mi

$.00 .00 1023.71 .00 $1023.71

*** DETAIL REPORT ON ROUTE NUMBER 2 *** A TRUCK - 2 leaves at 7:00AM on day 1 from the depot at Toledo OH Stop No description 3 Detroit 6 Pittsburgh Depot

Arrive time 08:47AM -->Break 04:27PM -->Break -->Break 10:11AM

Stop No description

Stop Drive Distance Time Depart time to stop to stop wind Day time Day Min Min Miles met? 1 09:17AM 1 30 107.6 90 YES 60 minutes 1 04:57PM 1 30 369.9 308 YES 720 minutes 60 minutes 2 ------- -- --253.6 211

Stop volume Weight Cube

Capacity in use Weight Cube 58.1% .0% 3 Detroit 16500 0 242.64 .0 16.9 .0 6 Pittsburgh 6750 0 558.89 .1 .0 .0 Totals Weight: Del = 23250 Pickups = 0 Cube: Del = 0 Pickups = 0 Route time: Driving Load/unload Break Total

12.2 hr 1.0 14.0 27.2 hr

Max allowed

9999.0 hr

Route costs: Driver (reg time) Driver (over time) Vehicle (mileage) Fixed Total

Inc cost to serve stop In $ In $/unit

Distance: To 1st stop From last stop On route Total Max allowed

90 mi 211 308 609 mi 9999 mi

$.00 .00 792.07 .00 $792.07

*** DETAIL REPORT ON ROUTE NUMBER 3 ***

A TRUCK - 3 leaves at 7:00AM on day 1 from the depot at Toledo OH Stop No description 5 Cleveland 4 Buffalo 15 Baltimore 14 Raleigh Depot

Arrive time 08:57AM -->Break 03:17PM -->Break -->Break 11:05AM 05:46PM -->Break 05:03PM

Stop No description

Stop Drive Distance Time Depart time to stop to stop wind Day time Day Min Min Miles met? 1 09:27AM 1 30 117.1 98 YES 60 minutes 1 03:47PM 1 30 290.1 242 YES 720 minutes 60 minutes 2 11:35AM 2 30 378.6 316 YES 2 06:16PM 2 30 370.2 308 YES 720 minutes 3 ------- -- --647.6 540

Stop volume Weight Cube

Inc cost to serve stop In $ In $/unit

5 Cleveland 4500 0 -39.06 4 Buffalo 6000 0 276.81 15 Baltimore 11250 0 58.48 14 Raleigh 6750 0 537.82 Totals Weight: Del = 28500 Pickups = 0 Cube:

Capacity in use Weight Cube 71.3% .0% .0 60.0 .0 .0 45.0 .0 .0 16.9 .0 .1 .0 .0 Del = 0 Pickups = 0

Route time: Driving Load/unload Break Total

30.1 hr 2.0 26.0 58.1 hr

Max allowed

9999.0 hr

Route costs: Driver (reg time) Driver (over time) Vehicle (mileage) Fixed Total

Distance: To 1st stop From last stop On route Total Max allowed

98 mi 540 866 1503 mi 9999 mi

$.00 .00 1953.88 .00 $1953.88

*** DETAIL REPORT ON ROUTE NUMBER 4 *** A TRUCK - 4 leaves at 7:00AM on day 1 from the depot at Toledo OH Stop No description 7 Cincinnati 8 Louisville 10 Memphis 9 St Louis Depot Stop No description

Arrive time 10:45AM -->Break 02:32PM -->Break -->Break 11:04AM 05:16PM -->Break 03:22PM

Stop Drive Distance Time Depart time to stop to stop wind Day time Day Min Min Miles met? 1 11:15AM 1 30 225.4 188 YES 60 minutes 1 03:02PM 1 30 137.0 114 YES 720 minutes 60 minutes 2 11:34AM 2 30 422.1 352 YES 2 05:46PM 2 30 341.8 285 YES 720 minutes 3 ------- -- --575.9 480

Stop volume Weight Cube

Inc cost to serve stop In $ In $/unit

7 Cincinnati 3750 0 4.09 8 Louisville 6000 0 1.32 10 Memphis 9000 0 449.65 9 St Louis 7500 0 160.42 Totals Weight: Del = 26250 Pickups = 0 Cube: Route time: Driving Load/unload Break Total

28.4 hr 2.0 26.0 56.4 hr

Capacity in use Weight Cube 65.6% .0% .0 56.3 .0 .0 41.3 .0 .0 18.8 .0 .0 .0 .0 Del = 0 Pickups = 0

Distance: To 1st stop From last stop On route Total

188 mi 480 751 1418 mi

Max allowed

9999.0 hr

Route costs: Driver (reg time) Driver (over time) Vehicle (mileage) Fixed Total

Max allowed

9999 mi

$.00 .00 1843.95 .00 $1843.95

*** DETAIL REPORT ON ROUTE NUMBER 5 *** A TRUCK - 5 leaves at 7:00AM on day 1 from the depot at Toledo OH Stop No description 11 Knoxville 12 Atlanta 13 Columbia Depot

Arrive time -->Break 04:43PM -->Break -->Break 09:51AM 02:49PM -->Break 03:40PM

Stop No description

Stop Drive Distance Time Depart time to stop to stop wind Day time Day Min Min Miles met? 60 minutes 1 05:13PM 1 30 523.5 436 YES 720 minutes 60 minutes 2 10:21AM 2 30 217.8 182 YES 2 03:19PM 2 30 267.7 223 YES 720 minutes 3 ------- -- --741.7 618

Stop volume Weight Cube

Inc cost to serve stop In $ In $/unit

11 Knoxville 5250 0 .26 12 Atlanta 18000 0 194.17 13 Columbia 3000 0 290.66 Totals Weight: Del = 26250 Pickups = 0 Cube: Route time: Driving Load/unload Break Total

29.2 hr 1.5 26.0 56.7 hr

Max allowed

9999.0 hr

Route costs: Driver (reg time) Driver (over time) Vehicle (mileage) Fixed Total

Capacity in use Weight Cube 65.6% .0% .0 52.5 .0 .0 7.5 .0 .1 .0 .0 Del = 0 Pickups = 0

$.00 .00 1896.61 .00 $1896.61

Distance: To 1st stop From last stop On route Total Max allowed

436 mi 618 405 1459 mi 9999 mi