The product life cycle-oriented modeling method

For the life cycle of products, the global unified multidisciplinary model is the core of the simulation optimization. It can effectively organize relative information, manufacturing resources and processes within the life cycle of products. The information has some differences in the content, format and pattern. So a consistent approach to describe the data and data relationships is needed. Using the unified modeling language Modelica based on the equation´s character and its support for discrete mechanism, the product life cycle-oriented and unified multidisciplinary model is established by studying the unified modeling mechanism of the multi-domain coupled complex products. The model can implement the simulation optimization in the entire life cycle and the multi-domain. Aiming at the complex multifunctional loaders integrated by machinery, electronics, control and hydraulic pressure, this paper explores the simulation and optimization of the design process, manufacturing process and data management in the full life-cycle on the basis for studying the full life-cycle modeling method. That lays the foundation of the overall simulation and optimization.