Multi objective fuzzy inventory model with deterioration, price and time dependent demand and time dependent holding cost

In this paper, we have formulated an inventory model with time dependent holding cost, selling price as well as time dependent demand. Multi-item inventory model has been considered under limitation on storage space. Due to uncertainty all the require cost parameters are taken as generalized trapezoidal fuzzy number. Our proposed multi-objective inventory model has been solved by using fuzzy programming techniques which are FNLP, FAGP, WFNLP and WFAGP methods. A numerical example is provided to demonstrate the application of the model. Finally to illustrate the model and sensitivity analysis and graphical representation have been shown.

A lot size inventory model for the Weibull distributed deterioration rate with discounted selling price and stock-dependent demand

In this paper, we present an inventory model with stock-dependent demand and deteriorating inventory. It is assumed that the deterioration rate follows a three-parameter Weibull distribution. The strategy of offering discounts in the selling price to boost demand is studied. The optimal discount in the selling price to maximise profit and the effects of deterioration on the optimal solution are the foci of this study. A numerical example and sensitivity analysis are carried out to validate the theory.time-dependent deterioration; discounted selling price; stock-dependent demand; lot sizing; inventory models Weibull distributed deterioration rate; discounts.