模拟通钢原料采购和库存优化管理

依据通钢生产销售实际情况，建立铁精粉原料供应优化模型，重点考虑原料采购和库存优化管理。由于初始模型为非线性混合整数规划模型，直接求解比较困难，因此根据模型特点，将初始模型分成两步求解，即用遗传算法确定铁精粉原料选择方案，再用线性规划方法求解已知铁精粉选择方案下的简化模型，从而降低求解难度。数值计算的结果表明了该数学模型的有效性和实用性。

Simulation of Optimal Management for Purchase and Storage of the Raw Material at Tonghua Steel

According to the actual production and sale of the Tonghua Steel corporation, the optimal model for providing rectified iron powders was established and more attention was paid to the optimal management for the purchase and storage of the raw material. It is difficult to directly solve the initial model which is non-linear mixed integer layout model. In order to decline the difficulty of the computation, considering the speciality of the initial model, there will be two steps in solving the model: first applying the genetic arithmetic to determine the project of how to select the rectified iron powders, then using the linear layout method to solve the simplified model of the selected project about the rectified iron powder. The present procedure is implemented for the model and effective results have been obtained.