Tham khảo tài liệu 'plastics engineered product design episode 3', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 60 Plastics Engineered Product Design overall flow chart that goes from the product concept to product release. Use is made of the optimization theory and its application to problems arising in engineering that follows by determining the material and fabricating process to be used. The dieory is a body of mathematical results and numerical methods for finding and identifying the best candidate from a collection of alternatives without having to specify and evaluate all possible alternatives. The process of optimization lies at die root of engineering since the classical function of the engineer is to design new better more efficient and less expensive products as well as to devise plans and procedures for the improved operation of existing products. To optimize this approach the boundaries of the engineering system are necessary in order to apply the mathematical results and numerical techniques of the optimization theory to engineering problems. For purposes of analysis they serve to isolate the system from its surroundings because all interactions between the system and its surroundings are assumed to be fixed frozen at selected representative levels. However since interactions and complications always exist the act of defining the system boundaries is required in the process of approximating the real system. It also requires defining the quantitative criterion on the basis of which candidates will be ranked to determine the best approach. Included will be the selection system variables that will be used to characterize or identify candidates and to define a model that will express the manner in which the variables are related. Use is made of the optimization methods to determine the best condition without actually testing all possible conditions comes through the use of a modest level of mathematics and at the cost of performing repetitive numerical calculations using clearly defined logical procedures or algorithms implemented on computers. This composite .
