抄録
A new approach on modeling is put forward in order to compose the virtual prototype which is indispensable for fully computer integrated concurrent devolopment of products. A basic concept of functional model is proposed for embodying this approach. This model is used mainly for explaining and simulating the functions and the efficiencies of various machines which are composed of many mechanical, fluid-mechanical and electrical parts. All organizations and engineers of various specialties in charge of the development can collaborate with one another using this model. This model can be used in all stages of product development from the initial plan through the design to the trial testing. Models of parts compose an organic system in the total product model. Functional models of some simple mechanical, electrical and fluid-mechanical systems are illustrated, and its validity and usefulness of the proposed approach are demonstrated.
