DFC(Design For Cost)是DFX方法的一个分支,是指在满足用户需求的前提下,尽可能地降低成本,通过分析和研究产品制造过程及其相关的销售、使用、维修、回收、报废等产品全生命周期中各个部分的成本组成情况,在进行评价后,对原设计中影响...DFC(Design For Cost)是DFX方法的一个分支,是指在满足用户需求的前提下,尽可能地降低成本,通过分析和研究产品制造过程及其相关的销售、使用、维修、回收、报废等产品全生命周期中各个部分的成本组成情况,在进行评价后,对原设计中影响产品成本的过高费用部分进行修改,以达到降低成本的设计方法。文中从DFC的角度提出大飞机的经济性必须依靠设计中的全生命周期成本(Life Cycle Cost,LCC)估算、全面成本管理和PLM,DFX,CRM等相关软件的综合应用来实现,分析了民用飞机的成本特征(起飞质量、发动机静推力和机翼面积等)和LCC估算方法(类比、神经网络和详细估算等方法),并给出了一个包括波音和空客民用飞机数据的采用BP神经网络进行LCC估算的实例。展开更多
Design For Cost (DFC) is a branch of Design For X (DFX). In this paper, wedefined DFC as a design method that analyzed and evaluated the product's life cycle cost (LCC), thenmodified the design to reduce the LCC. ...Design For Cost (DFC) is a branch of Design For X (DFX). In this paper, wedefined DFC as a design method that analyzed and evaluated the product's life cycle cost (LCC), thenmodified the design to reduce the LCC. Nowadays it is a very difficult thing to obtain LCC data inChina or in developing countries. Statistical methods can not be used because available LCC data arefew. In order to solve this problem, we used grey system theory. Then relations of cost factorswere analyzed in LCC using grey relevant methods, and a GM(1,1) model between design parameters andLCC was established. Using this model, we can estimate and control LCC by changing design parametersat the beginning of the design stage.展开更多
文摘DFC(Design For Cost)是DFX方法的一个分支,是指在满足用户需求的前提下,尽可能地降低成本,通过分析和研究产品制造过程及其相关的销售、使用、维修、回收、报废等产品全生命周期中各个部分的成本组成情况,在进行评价后,对原设计中影响产品成本的过高费用部分进行修改,以达到降低成本的设计方法。文中从DFC的角度提出大飞机的经济性必须依靠设计中的全生命周期成本(Life Cycle Cost,LCC)估算、全面成本管理和PLM,DFX,CRM等相关软件的综合应用来实现,分析了民用飞机的成本特征(起飞质量、发动机静推力和机翼面积等)和LCC估算方法(类比、神经网络和详细估算等方法),并给出了一个包括波音和空客民用飞机数据的采用BP神经网络进行LCC估算的实例。
文摘Design For Cost (DFC) is a branch of Design For X (DFX). In this paper, wedefined DFC as a design method that analyzed and evaluated the product's life cycle cost (LCC), thenmodified the design to reduce the LCC. Nowadays it is a very difficult thing to obtain LCC data inChina or in developing countries. Statistical methods can not be used because available LCC data arefew. In order to solve this problem, we used grey system theory. Then relations of cost factorswere analyzed in LCC using grey relevant methods, and a GM(1,1) model between design parameters andLCC was established. Using this model, we can estimate and control LCC by changing design parametersat the beginning of the design stage.
