SIMULATION BASED GENERATION OF AN INITIAL DESIGN TAKING INTO ACCOUNT GEOMETRIC DEVIATIONS AND DEFORMATIONS

DS 68-10: Proceedings of the 18th International Conference on Engineering Design (ICED 11), Impacting Society through Engineering Design, Vol. 10: Design Methods and Tools pt. 2, Lyngby/Copenhagen, Denmark, 15.-19.08.2011

Year: 2011
Editor: Culley, S.J.; Hicks, B.J.; McAloone, T.C.; Howard, T.J. & Dong, A.
Author: Walter, Michael; Breitsprecher, Thilo; Gruber, Georg; Wartzack, Sandro
Section: Design Methods and Tools Part 2
Page(s): 78-90

Abstract

The success of a product’s development is essentially affected by its functionality. So the product developer has to ensure the functionality as early as possible. Since this usually can’t be achieved with the first design several iterations are needed to modify the design. The product’s functionality depends largely on the interaction of its components and their geometries. So geometric deviations of these components need to be taken into account. These deviations can result e.g. from manufacturing discrepancies or being operation-depending like deformations.
This paper presents an approach which enables the product developer to determine an initial design proposal that fulfils its function. So no time- and money-consuming iterations are needed. Therefore the approach uses methods and tools like tolerance allocation, topology optimization and parameter optimization at an early stage. The tolerance allocation is needed to define the functional requirement of the non-ideal components. The optimization tools are used to create the initial design proposal fulfilling the functional requirement. A case study of a non-ideal scissor-type lift table illustrates the approach.

Keywords: TOPOLOGY OPTIMISATION; NON-IDEAL PARTS; INITIAL DESIGN PROPOSAL; EARLY FUNCTIONAL VALIDATION

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