Electromechanical Product Teardown Analysis Of The Basic Theory And Recovery Assessment Method

In this dissertation, The base theory of disassembly and assessing method of recyclability is studied deeply and systematically. The main content are as followings: 1 The product disassembly information and its source are analyzed. The quantitative models of disassembly direction area, disassembly energy and disassembly time are built. The disassembly information is expressed by product network chart. The styles of parts correlative relations and mathematics judgement method are studied. Part disassembly restrict matrix is built, and By which, whether a part or an assembly can be disassembled is ascertained. 2 The concept of part relating degree is put forward, and it is measurement as combining tightness between two parts. The part relating degree is also analyzed quantitatively by using the analytic hierarchy process (AHP) in this dissertation. 3 According to the part relating degree, the relating matrix is built. The sub- assembly clustering can be realized by using the matrix. When some parts can be disassembled as a sub-assembly. the analysis difficulty of disassembly sequence decision-making can be simplified enormously, and the problem of disassembly sequence combination explode can be resolved efficiency. Disassembly analysis theory has been studied rather perfectly. Disassembly sequence decision-making model is built. The sub-assembly clustering can be realized by using the part-relating matrix. Based on the dimensional geometry, dimensional restrict matrix, sub-assembly stability, disassembly sequence can be auto built finally. 4 The recyclabitity assessment model based on Artificial Neural Network (ANN) has been established. The calculation results of some examples show that the method in this dissertation is effective. By using the ANN as a black-box, the result obtained from exports is used as sample set to train the ANN. The exports?idea (3) refined from the set can be employed as recycling assessment. 5 The software system of design for disassembly and assessment for recyclability is developed. The system contains many modulars, such as disassembly information express, product data processing. disassembly analysis, recyclability assessment.