Research On Key Technologies And Methods Of Material Selection In Green Design

Material selection is an important process in product design. The green property of products can be shown through the property of the material. So what kind of material to be selected is a very important factor.After analyzing the actualities of green design, we discuss the possible problems existing in the process of material selection. With the basic concept of material selection, the basic applicability of material, and the influence in material selection, we show the commonly principia and process of material selection. Then, a system-frame of material selection is set up in the paper.The material's using capability, technical performance , and economic performance were used to be taken into accounted in a traditional method and seldom referred to environmental performance. With the developing of the society, the environmental harmony gradually becomes an important factor in material selection. The selecting method under the guiding of traditional thought and method cannot meet the necessary of developing society. The paper puts forward a new thought with three dimensions and a method called three-dimension material selection method. With the new thought three incompatibility factors which include using capability, technical performance, and economic performance will be translated into a three-dimension factor which is much easier to deal with. Based on the basic principia of material selection and the help of mathematics such as AHP, a model-frame of material selection with three-dimension is set up. Then a material program and process about the three-dimension is described detailed. Finally, some idiographic examples are used to prove that the three-dimension material selecting method is operable and applicable.The paper also describes current database's characteristic, method and process, puts forward the structure and the design of material database, and explains the data source in the database briefly.At last the paper introduced a computer-aided material selecting system which is based on the before-mentioned thought and sustains the green design, and some idiographic examples are validate.