ILOG OPL Studio Supply chain Model Library

Supply chain

This section contains information on the following distributed examples:

* Decentralization
* Multistage supply chain
* Outsourcing
* Product deployment

Decentralization
This model describes problem 10 from Model Building in Mathematical Programming,
by H.P. Williams. The model answers the question: where should each department
be located so as to minimize overall yearly cost? This is a linearized form of
quadratic assignment problem.

Industry : Logistics
Feature : OPL Project
Technique : Integer Programming
Complexity : Basic
Keywords : Decentralization, location
Works with a trial version? : Yes
Project Location : examples/opl/models/Decentrl
Model Name : decentralization.mod

Multistage supply chain
This model describes a three-echelon supply chain. Plant A's produce primary
products A, which can be either fed into Plant B's to produce intermediary
products B or sold on spot markets. There are customers for product B, which is
also an input to the final product C. There are customers for product C and
Plant C's may have external sources for B. A diagram is presented in the
Microsoft Excel spreadsheet Wedge Data.xls .
At each stage, a conversion ratio applies from input materials to products. The
manufacturing process is not perfectly reliable, and only a certain percentage
of the production is good. There are processing capacities and storage
capacities for both raw materials and manufactured products.
The objective is to minimize the production and logistics costs to meet the
demand.

Industry : Supply Chain
Feature : OPL Project
Technique : Integer Programming
Complexity : Intermediate
Keywords : Multi-echelon, plants, products
Project Location : examples/opl/models/SupplyChain
Model Name : supply.mod

Outsourcing
In this model, a manufacturer selects a set of suppliers for the components of
his products. Different suppliers offer different discount schedules - all-units
discount or incremental discount. Each supplier has a supply capacity on the
total number of items. The objective is to find the purchasing quantities for
each item from the suppliers to meet the demands at a minimum cost. The costs
include purchasing costs and setup costs. A setup cost occurs whenever a
positive quantity of any item is ordered from a supplier.

Features:

* A mix of suppliers that offer either various discounts.
* Setup costs for ordering.
* Capacity limits for each supplier.

Industry : Supply Chain
Feature : OPL Project
Technique : Integer Programming
Complexity : Intermediate
Keywords : Outsourcing, Discounts, Suppliers
Project Location : examples/opl/models/Outsource
Model Name : outsource.mod

Product deployment
This model plans multi-product deployment processes in a single period. The
objective is to minimize the sum of transportation costs and storage costs. The
transportation costs include the regular costs for all flows and extra costs for
the amount of flows that are in excess of the capacities of the links. The
storage costs are charged only for the amount of goods over the site capacity.
For each article, the program computes the flow of goods on each link in order
to cover the demand and minimize the total cost. It also provides the optimal
acquisition plan for extra storage and link capacities.

Industry : Supply Chain
Feature : OPL Project
Technique : Linear Programming
Complexity : Intermediate
Keywords : Product planning, production
Project Location : examples/opl/models/Deploy
Model Name : deploy.mod

Source:
http://www.ilog.com/products/oplstudio/