| Author | Adikari, A. M. S. D. |
| Call Number | AIT Thesis no. IE-94-15 |
| Subject(s) | Production planning--Mathematical models
|
| Note | A thesis submitted in partial fulfilment of the requirement for the degree of Master of
Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. IE-94-15 |
| Abstract | A (Q,R) type policy for a two stage assembly system is developed with constant
demand rate for finished products and stochastic part procurement lead times. In this study the
production was considered as cyclic and continuous. The optimal ordering policies for parts as
well as optimal lot size to produce are considered in order to minimise long-run average cost.
The long run average cost comprises of the setup cost, parts as well as finished product
holding cost and the cost of backlogging. A generalised expression for total cost function per
unit time for general N parts is obtained and the corresponding mathematical formulation is
given, with properties of the objective function. Extensive numerical experiments are presented
for two and three part problems. Explanations for the behaviour of optimal solutions with
regard to model parameter change is presented and some prominent observations are also
given.
The second model with similar structure and decision variables as above but constant
part procurement lead time and stochastic demand for final product is also presented with
characteristics of objective function. Numerical experiment is presented for this for two part
problem. Comparison of optimal solutions with above case is also given. |
| Year | 1994 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. IE-94-15 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Industrial Systems Engineering (DISE) |
| Academic Program/FoS | Industrial Engineering (IE) |
| Chairperson(s) | Fujiwara, O. |
| Examination Committee(s) | Pandey, P. C. ;Saeed, Khalid
|
| Scholarship Donor(s) | The Government of Netherlands ; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1994 |