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Green Manufacturing9598
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- 下一篇：复合材料结构英文文献和中文翻译
Green Manufacturing (GM) is a modern manufacturing strategy, integrating all the issues of manufacturing considering the factors such as environmental impact and resources consumption and so on, its ultimate goal is to reduce and minimize environmental impact and resources consumption during the life cycle of the product, which includes design, production, package, transportation, use and disposal, furthermore, it will optimize the economic benefits and social ones of enterprises. The domestic and foreign experts generally believe that green manufacturing is an embodiment of human society sustainable developmental strategy in modern manufacturing industry, and it will have the vital role in the manufacturing industry, the national economy and the national defense safety. Green Manufacturing Process Planning (GMPP) is one of the key technologies of GM, which deals with waste flows in the product processing and its influence problem, it has been paid great attention to by the research organizations of various countries, the universities as well as the government departments. Based on the research actuality inside and outside our country of green manufacturing and green manufacturing process planning, the strategy and implementation technique of Green manufacturing process planning will be researched in depth, moreover, the technologies of process element planning and its assessment will be. And also its application on the design of manufacturing process of engine connecting rod will be researched. There are concrete research contents as followings: 1. Based on the analysis and conclusion of the connotation and characteristic of green manufacturing process planning, the optimal multi-objective decision-making models are set up. The decision-making problem of green manufacturing process planning can be decomposed into a serial of sub models and a new green manufacturing process planning strategy based on the model set is put forward. 2. An exhaustive study on the green manufacturing process element planning has been made. In view of the selection problem such as machine, tool and fluid of Green manufacturing process element, the objective sets of the planning problem are put forward, which include five decision-making objective factors: Time (T), Quality (Q), Cost (C),environmental impact(E), resource consumption(R), and the corresponding multi-objective decision-making models are developed. 3. On the basis of the analysis of the indexes system of the resource consumption and environmental impact of Green manufacturing process, the environmental impact framework of Green manufacturing process element is proposed, moreover, the quantization method of that is studied through establishing the detailed list table for the description and evaluation of resource consumption and environmental impact of Green manufacturing process. 4. Based on the fuzzy evaluation model, the green manufacturing process methods of engine connecting rod have been evaluated and optimized by means of the analysis of series structure and the superiority and industrialization foreground of that is analyzed.
The research of HSM mechanism, which is the theoretical fundamental of high-speed Machining (HSM), is critical for application and development of HSM technology. Surface quality, an important research content of HSM mechanism, is judged by residual stresses. Residual stresses in machined layer for HSM impact the working performance and fatigue strength of parts. Also, they are major affecting factors of defects such as deformation and crack. As a result, correct prediction of residual stresses in machining process has great theoretical significance and practical values. The theory of residual stresses in machined layer involves many cross subjects，such as mechanical manufacture, elastic-plastic mechanics, finite element method and etc. In view of the complex nature of problem，a method including experiments, theoretical modeling and computer simulating is proposed in this dissertation. Then, beginning with the metal cutting principle, deep theoretical researches and numerical simulations of residual stresses in HSM are carried out, and a predicting model is established. This is an important fundamental subject to promoting HSM technology development and application, which has a very important theoretical and practical significance to exploit HSM potential energy further. In this paper, firstly, the generation mechanism of residual stresses for machining is analyzed, the analytical model for the formation mechanisms of machined layer is established, and a thermo-mechanical coupling equation for the third deformation zone is constructed. Secondly, the distribution of residual stresses on machined layer and effects of machining parameters and tool geometry on residual stresses are studied, by the use of FEM procedure. Thirdly, experiments of high speed milling and residual stresses measurement are carried out in order to study the distribution of residual stresses and to verify the availability of FEM models. At last, a mathematical model of relationship between residual stress and affecting factors is promoted.