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authors Sellgren, Ulf
year 1999
title Simulation-driven Design
source KTH Stockholm
summary Efficiency and innovative problem solving are contradictory requirements for product development (PD), and both requirements must be satisfied in companies that strive to remain or to become competitive. Efficiency is strongly related to ”doing things right”, whereas innovative problem solving and creativity is focused on ”doing the right things”. Engineering design, which is a sub-process within PD, can be viewed as problem solving or a decision-making process. New technologies in computer science and new software tools open the way to new approaches for the solution of mechanical problems. Product data management (PDM) technology and tools can enable concurrent engineering (CE) by managing the formal product data, the relations between the individual data objects, and their relation to the PD process. Many engineering activities deal with the relation between behavior and shape. Modern CAD systems are highly productive tools for concept embodiment and detailing. The finite element (FE) method is a general tool used to study the physical behavior of objects with arbitrary shapes. Since a modern CAD technology enables design modification and change, it can support the innovative dimension of engineering as well as the verification of physical properties and behavior. Concepts and detailed solutions have traditionally been evaluated and verified with physical testing. Numerical modeling and simulation is in many cases a far more time efficient method than testing to verify the properties of an artifact. Numerical modeling can also support the innovative dimension of problem solving by enabling parameter studies and observations of real and synthetic behavior. Simulation-driven design is defined as a design process where decisions related to the behavior and performance of the artifact are significantly supported by computer-based product modeling and simulation. A framework for product modeling, that is based on a modern CAD system with fully integrated FE modeling and simulation functionality provides the engineer with tools capable of supporting a number of engineering steps in all life-cycle phases of a product. Such a conceptual framework, that is based on a moderately coupled approach to integrate commercial PDM, CAD, and FE software, is presented. An object model and a supporting modular modeling methodology are also presented. Two industrial cases are used to illustrate the possibilities and some of the opportunities given by simulation-driven design with the presented methodology and framework.
keywords CAE; FE Method; Metamodel; Object Model; PDM; Physical Behavior, System
series thesis:PhD
last changed 2003/02/12 21:37
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