Abstract
Recent designers have been requested to perform designing large-scale and complicated products in a short term. This requires development of sophisticated computer aided design systems for the upper design processes-requirements definition and conceptual design, in order to minimize feedbacks from the lower design processes. In addition, recent globalization in industry has driven the importance of designing products considering regionally specific usage and environment. Therefore, these upper design processes have recently needed to be performed considering also influences by inputs from outside of the product. From this point of view, some methods for systematically detecting latent undesirable troubles in advance were proposed. To achieve the detection, it is required to model functions, behavior and physical phenomena caused by the external inputs, and then integrate them for analyzing the influence of the inputs to the behavior and functions. In those conventional researches, integration of the models of the behavior and the physical phenomena was mainly discussed. In this paper, a method for integrated modeling of the behavior and the functions is proposed, and computer-support based on the integrated model is discussed.
