logistics network design and facility location - … and populate network optimization database. 3....
TRANSCRIPT
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Module SixModule SixLogistics Logistics Network Design and Facility Network Design and Facility
LocationLocation
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OutlineOutline
Example Logistics NetworkExample Logistics NetworkFacility Location DecisionsFacility Location Decisions
ToolsToolsSummarySummary
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Example NetworksExample Networks
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Example Logistics NetworkExample Logistics Network
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Why Logistics NetworkWhy Logistics Network
Manufacturers (GM, Ford, Boeing, Manufacturers (GM, Ford, Boeing, etc.)etc.)Retailers (WalRetailers (Wal--Mart, Home Depot, Mart, Home Depot, Amazon.comAmazon.com, etc.), etc.)Couriers (FedEx, UPS, DHL, etc.)Couriers (FedEx, UPS, DHL, etc.)Carriers (Railroads, Trucking Firms, Carriers (Railroads, Trucking Firms, etc.)etc.)
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A SixA Six--DC NetworkDC Network
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National Transportation NetworkNational Transportation Network
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Other FactorsOther Factors
Source: Carbonell et al, Global Gateway Regions,The United States of America’s Third Century Strategy, Southern California Association of Governments, Los Angeles, CA, Sept. 2005; based on “Toward an American Spatial Development Perspective,”University of Pennsylvania, Department of Planning, Spring 2004.
America’s Future Mega-Areas
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Steps for Network DesignSteps for Network Design1.1. Assess/evaluate current network.Assess/evaluate current network.2.2. Design and populate network optimization database.Design and populate network optimization database.3.3. Create network design alternatives, such as more or fewer Create network design alternatives, such as more or fewer
hierarchies, multihierarchies, multi--commodity flows, pooling opportunities, commodity flows, pooling opportunities, mergemerge--inin--transit, direct shipping, cross docking, and transit, direct shipping, cross docking, and supplysupply--flow optimization concepts.flow optimization concepts.
4.4. Develop network optimization model.Develop network optimization model.5.5. Choose network optimization tool. Choose network optimization tool. 6.6. Implement network model in chosen tool.Implement network model in chosen tool.7.7. Evaluate alternative network designs.Evaluate alternative network designs.8.8. ““PracticalizePracticalize”” recommended network structure.recommended network structure.9.9. Compute reconfiguration cost.Compute reconfiguration cost.10.10. Make go/noMake go/no--go decision.go decision.
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Competitive Strategy
INTERNAL CONSTRAINTSCapital, growth strategy, existing network
PHASE ISupply Chain
Strategy GLOBAL COMPETITION
PHASE IIRegional Facility
Configuration
PRODUCTION TECH.Cost, sale/scope impact, support, flexibility
COMPETITIVE ENVIRONMENT
TARIFFS AND TAX INCENTIVES
REGIONAL DEMANDSize, growth, homogeneity, local specifications
POLITICAL, EXCHANGE RATE AND DEMAND RISK
PHASE IIIDesirable Sites
AVAILABLE INFRASTRUCTURE
PRODUCTION METHODSkill needs, response time
PHASE IVLocation Choices
FACTOR COSTSLabor, materials, site specific
LOGISTICS COSTSTransportation, inventory, coordination
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Illustrative NetworkIllustrative Network
Supplier
Supplier
Market Division
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The CenterThe Center--ofof--Gravity ModelGravity Model
Map all of the market locations on an Map all of the market locations on an x and y coordinate gridx and y coordinate gridFind a central location closest to the Find a central location closest to the market with highest demandmarket with highest demandChoose this location as the DC to Choose this location as the DC to serve the marketserve the market
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A Facility Location: A Facility Location: CoGCoG ModelModel
Equation (Location of the Central DC)Equation (Location of the Central DC)
∑
∑
=
== n
ii
n
iii
d
xdX
1
1
∑
∑
=
== n
ii
n
iii
d
ydY
1
1
Where xi is x-coordinate of location i, yi is the y-coordinate of location i.
di is demand associated with location i.
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An ExampleAn ExampleThe XYZ company would like to set up a The XYZ company would like to set up a distribution center to serve several key supply distribution center to serve several key supply chain customers in the area. The annual chain customers in the area. The annual demand and location of these customers are demand and location of these customers are shown in the table. Use COG model of shown in the table. Use COG model of decide the approximate location of the DC.decide the approximate location of the DC.
Customer x-y-coordinate Annual DemandA (5,12) 2,000B (7,8) 10,000C (12,10) 4,000D (3,9) 15,000E (15,4) 6,000F (7,15) 8,000
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ExampleExample
5 10
5
10
x
y
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Answer: Location of DCAnswer: Location of DC
09.786154102
8*76*1515*34*1210*72*5
1
1 =+++++
+++++==
∑
∑
=
=
kkkkkkkkkkkk
d
xdX n
ii
n
iii
34.945423
861541028*156*415*94*1010*82*12
1
1 ==+++++
+++++==
∑
∑
=
=
kkkkkkkkkkk
d
ydY n
ii
n
iii
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ExampleExample
5 10
5
10
x
y
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Example: Demographic ShiftExample: Demographic Shift
5 10
5
10
x
y
New Customer
New Location of DC
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A Technical Network Design ExampleA Technical Network Design Example
Potential DC Location
Customer
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Implications of the ExampleImplications of the Example
The DC incurs heavy truckload traffic for The DC incurs heavy truckload traffic for inventory replenishmentinventory replenishmentFrom the DC to customers, the traffic is in From the DC to customers, the traffic is in relatively low volume, at a higher relatively low volume, at a higher frequency, more time sensitive.frequency, more time sensitive.Conclusion: economic patterns, Conclusion: economic patterns, geographic locations and demographic geographic locations and demographic distribution have a say on the distribution distribution have a say on the distribution system design. system design. High transportation cost (congestion High transportation cost (congestion delay, user fees, etc.) and poor access to delay, user fees, etc.) and poor access to intermodalintermodal facilities equivalently make facilities equivalently make geographical distance to a certain point geographical distance to a certain point longer.longer.
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Illustrative Distribution NetworkIllustrative Distribution Network
Distribution Centers
Suppliers
Vendors
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Factors In Network DesignFactors In Network Design
Strategic FactorsStrategic FactorsTechnological FactorsTechnological FactorsMacroeconomic FactorsMacroeconomic FactorsExchange Rate and Demand RiskExchange Rate and Demand RiskPolitical FactorsPolitical FactorsInfrastructure FactorsInfrastructure FactorsCompetitive FactorsCompetitive FactorsCustomer Response Time and Local PresenceCustomer Response Time and Local PresenceLogistics and Facility CostLogistics and Facility Cost
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SummarySummary
Private sector logistics network efficiency Private sector logistics network efficiency is determined by the nationis determined by the nation’’s freight s freight transportation network. transportation network. Freight network should provide access to Freight network should provide access to markets and suppliers at the lowest markets and suppliers at the lowest possible cost to make the system most possible cost to make the system most efficient.efficient.Historically, private sector logistics Historically, private sector logistics networks have responded gradually to networks have responded gradually to changes in demand, freight infrastructure, changes in demand, freight infrastructure, and population, but this is changing.and population, but this is changing.