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Behavior modeling in mechanical engineering: A modular approach
KTH, Superseded Departments, Machine Design.
KTH, Superseded Departments, Machine Design.
1998 (English)In: Engineering with Computers, ISSN 0177-0667, E-ISSN 1435-5663, Vol. 14, no 3, 185-196 p.Article in journal (Refereed) Published
Abstract [en]

Many engineering activities are confronted with the relation between shape and behavior. Modern 'state-of-the-art' CAD systems can support a dynamic design process with flexible and umambiguous geometric modeling of artifacts. The Finite Element (FE) method is a general method to model and simulate physical behavior CAD and FE integration enables numerical prediction of the physical behavior of artifacts. To deal with the complexity of modern products and the dynamic character of the design process, the integration must be addressed from both a systems and a process point of view. The models must thus be flexible, scalable, and reusable. A modularized modeling approach based on four stages is proposed, and exemplified with behavior modeling of a turn-key grinding machine.

Place, publisher, year, edition, pages
1998. Vol. 14, no 3, 185-196 p.
Keyword [en]
CAD, feature, finite element modeling, order-based design, physical behavior
Identifiers
URN: urn:nbn:se:kth:diva-19443ISI: 000076499500001OAI: oai:DiVA.org:kth-19443DiVA: diva2:337939
Note
QC 20100810Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved
In thesis
1. Simulation-driven design: Motives, Means, and Opportunities
Open this publication in new window or tab >>Simulation-driven design: Motives, Means, and Opportunities
1999 (English)Doctoral thesis, comprehensive summary (Other scientific)
Abstract [en]

Efficiency and innovative problem solving are contradictory requirements for productdevelopment (PD), and both requirements must be satisfied in companies that strive to remainor to become competitive. Efficiency is strongly related to ”doing things right”, whereasinnovative 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 adecision-making process. New technologies in computer science and new software tools openthe way to new approaches for the solution of mechanical problems. Product datamanagement (PDM) technology and tools can enable concurrent engineering (CE) bymanaging the formal product data, the relations between the individual data objects, and theirrelation to the PD process. Many engineering activities deal with the relation betweenbehavior and shape. Modern CAD systems are highly productive tools for conceptembodiment and detailing. The finite element (FE) method is a general tool used to study thephysical behavior of objects with arbitrary shapes. Since a modern CAD technology enablesdesign modification and change, it can support the innovative dimension of engineering aswell as the verification of physical properties and behavior. Concepts and detailed solutionshave traditionally been evaluated and verified with physical testing. Numerical modeling andsimulation is in many cases a far more time efficient method than testing to verify theproperties of an artifact. Numerical modeling can also support the innovative dimension ofproblem solving by enabling parameter studies and observations of real and syntheticbehavior. Simulation-driven design is defined as a design process where decisions related tothe behavior and performance of the artifact are significantly supported by computer-basedproduct modeling and simulation.A framework for product modeling, that is based on a modern CAD system with fullyintegrated FE modeling and simulation functionality provides the engineer with tools capableof supporting a number of engineering steps in all life-cycle phases of a product. Such aconceptual framework, that is based on a moderately coupled approach to integratecommercial PDM, CAD, and FE software, is presented. An object model and a supportingmodular modeling methodology are also presented. Two industrial cases are used to illustratethe possibilities and some of the opportunities given by simulation-driven design with thepresented methodology and framework.

Place, publisher, year, edition, pages
Stockholm: KTH, 1999. vi, 42 p.
Series
Trita-MMK, ISSN 1400-1179 ; 1999:26
Keyword
CAD, CAE, FE method, Metamodel, Object model, PDM, Physical behavior, System
Identifiers
urn:nbn:se:kth:diva-2875 (URN)99-3055738-5 (ISBN)
Public defence
1999-12-01, 00:00
Note
QC 20100810Available from: 2000-01-01 Created: 2000-01-01 Last updated: 2010-08-11Bibliographically approved

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