Research On Simulation Based Modeling And Optimization Of Auto Fittings Machining And Storing System

The development of SCM model makes more and more auto factories give their assistant business operation to the third party logistic enterprises. Firstly, it processes the materials which are got from their suppliers to be semi-manufactured goods that are called products and then stores them in the warehouse. When there are some orders from the down-river factories, the products will be distributed to another place. It is an important problem that how to allocate safe inventories both about material and product, and what strategy about the productivity to make sure the system can process stochastic orders in time and run stably with a correct logistic cost.This problem is one of the optimization problems of complex system. It happen more stochastic and discrete events. However, it is an integration of several continues producing process with a fixed productivity about the producing problem. Every decision variable does not exist by itself, but there is not any math description between them. So, it is difficult for analytics to resolve, while the technique of simulation and optimization can simulate the real system and analyze the running that it offers a good tool for us to resolve problems as this. Based on this background, this paper does some research as following:Firstly, this paper analyses the business process of the logistic system and built the concept model of the production and inventory system. It was describes in detail about the logistic process and cost controlling, also it made the cost function of the system.Secondly, this paper constructs the simulation model of the production and inventory system which includes six kinds of simulation events which were describes in detail about their simulation arithmetic and processing logics.Finally, based on the simulation model, this paper designs an optimization model and finished the solutions' finding with OptQuest.Through these research works, this paper discusses a new optimization methods based on modeling and optimization of auto fittings machining and storing system and applies it to the real enterprise's environment. The result proves the validity and rationality of the research. It is a good decision making tool for the enterprises who refers to this kind of business.