| Summary: | 碩士 === 國立屏東科技大學 === 工業管理系所 === 98 === In this research, we modified Harris（1913）proposed economical order quantity（Economic order quantity, EOQ）model to build up a mathematical programming model under pre fixed time and indefinite demand quantity, practice multi-material constraints, transportation capacity constraints and stochastic demand quantity discounts constraints. Based on the numerical analysis algorithm is used, a non-linear inventory model is derived to solve the optimal order quantity and re-order point to reach the goal for the total expected cost minimization. At the single material part, sensitivity analysis is implemented for relevant parameters on the expected total inventory cost function. At the multi-material, the variance analysis is implemented. Finally, this research proposed five concrete conclusions for future studies and practical applications.
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