Prediction of workpiece-fixture contact forces using the rigid body model

Michael Yu Wang, Diana M. Pelineascu

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

Prediction of workpiece-fixture contact forces is important in fixture design since they define the fixture stability during clamping and strongly influence workplace accuracy during manufacturing. This paper presents a solution method for predicting the normal and fractional contact forces between workpiece-fixture contacts. The fixture and workpiece are considered to be rigid bodies, and the model solution is solved as a constrained quadratic optimization by applying the minimum norm principle. The model reveals some intricate properties of the passive contact forces, including history dependency during a sequence of clamping and/or external force loading. Model predictions are shown to be in good agreement with known results of an elastic-contact model prediction and experimental measurements. This presented method is conceptually simple and computationally efficient. It is particularly useful in the early stages of fixture design and process planning.

Original languageEnglish
Title of host publicationProceedings of the ASME Design Engineering Technical Conference
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages13-19
Number of pages7
ISBN (Electronic)0791836231
DOIs
Publication statusPublished - 2002
Externally publishedYes
EventASME International Design Engineering Technical Conferences & Computers and Information in Engineering Conference (IDETC/CIE) 2002 - Montreal, Canada
Duration: 29 Sept 20022 Oct 2002

Publication series

NameProceedings of the ASME Design Engineering Technical Conference
Volume3

Conference

ConferenceASME International Design Engineering Technical Conferences & Computers and Information in Engineering Conference (IDETC/CIE) 2002
Country/TerritoryCanada
CityMontreal
Period29/09/022/10/02

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