Digital Modelling of Product Development Process Supporting Entire Life Cycle

Product´s life cycle is a continuous and variational time process and can be divided into a sequence of life phase. In this paper, product development process was viewed as an optimization process to find a process set under given evaluation factors such that the set of evaluation indices of entire life cycle is optimized. Based on this, the digital model of integrated product and process development was developed by which most development issues can be described as constrained optimization problems. The process of product function decomposition was described. The mapping relationships among functional domain, physical domain and process domain were analyzed. Finally, an illustrative case was given to illustrate the design method proposed above.