生產(chǎn)與運(yùn)作管理試題3

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1、P2962.已知A和F兩種產(chǎn)品的結(jié)構(gòu)和產(chǎn)品出產(chǎn)計(jì)劃如下表，求原件B的總需求量。LT=3周LT=2周A2B3CF3B2X1YLT=4周LT=12周LT=2周周次12345678910111213產(chǎn)品A200150200150250300300300200100150產(chǎn)品F90200150200210100180150250200250解：周次12345678910111213產(chǎn)品A200150200150250300300300200100150B的需求量400300400300500600600600400200300產(chǎn)品F9

2、0200150200210100180150250200250B的需求量270600450600630300540450750600750B的總需求量2701000750100093080011401050135010009503003.已知對(duì)某零件的凈需求如表所示，單位訂貨費(fèi)為100元，單位維持庫(kù)存費(fèi)為0.25元/（件*周）（1）用EOQ公式確定訂貨量（2）試用MPG確定訂貨安排周次12345678910凈需求量200150100200100100150200150200解：(1)10周的平均需求為：D＝1550/10=15

3、5,年需求＝155×52＝8060年持有成本H＝0.25×52=13EOQ===352.14≈352（件）周次凈需求經(jīng)濟(jì)批量期初庫(kù)存期末庫(kù)存庫(kù)存成本訂購(gòu)成本各周總成本1200352352152631001632150152219.2519.2531003523542547610017642002545438.538.55100352406306891001896100306206646471502065632.7532.7582003524082087710017791502085833.2533.25102003524102

4、1077.5100177.5總成本1070.25(2)S/H=100/0.25＝400，用MPG法求訂貨批量的過(guò)程，如表所示：移動(dòng)次數(shù)最小零件周期周次12345678910010020015010020010010015020015020011002002500200100100150200150200215020025003000100150200150200315020025003000250020015020042502002500300025003500200540045000300025003500200期初庫(kù)存Qs

5、450250100300100250150350150200期末庫(kù)存Qt25010001000150015000如圖所示訂貨安排為：第一周訂450件，第四周訂300件，第六周訂250件，第八周訂350件，第十周訂200件。CR=5×100＝500元CH=0.25×(450＋250＋250＋100＋100＋300＋100＋100＋250＋150＋150＋350＋150＋150＋200)/2＝381.25元CT=CR+CH=500+381.25＝881.25元