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MA/RS HOME->MA/RS ROADMAP->SOVA->MODELING->BEAM-BASED
VARIATION PROPOGATION |
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Title:
Beam-based
Variation Propagation Model at a Preliminary Design Stage |
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Sponsor: NIST-ATP |
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Collaborators:
R. Kumar, J. Kong, Y. Zhou, S.
Gogoneni (Dimensional
Control Systems) |
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Team: H.
Wang,
A. Borraccia,
and
D. Ceglarek |
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Description: |
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Early
design stage of product and process requires development of
model representing incomplete knowledge about product design.
This paper addresses this issue by discretizing the product
into Key Characteristics (part-to-part joint, part-to-fixture
mating surface, cross section changing) and then modeling
their relations in the form of beam elements. This allows
carrying variation information on in the parts flow
station-by-station. The developed multi-station model is
formulated as state space model, which integrates beam-based
model of products and subassemblies, fixture locating,
clamping layout and part-to-part joints. |
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(1) Beam Based Nodel |
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Beam-based modeling of vehicle body structure
has shown 95% stiffness accuracy (Chon, 1986)
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Beam-based model is capable to model product
and process with incomplete CAD/CAM information at
preliminary design stage.
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(2) Error
Propogation Model |
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(3)
Implementation |
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Related Papers |
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Wang, H,
Borraccia, A., Ceglarek, D., 2006 "Beam-based Variation
Propagation Model for Preliminary Design Phase," to be submitted
to Trans. of IIE, Design and Manufacturing
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Shiu, B.W., Ceglarek, D., Shi, J., 1997 "Flexible
Beam-Based Modeling of Sheet Metal Assembly for Dimensional
Control," Trans. of NAMRI, Vol. XXV, pp.
49-54
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Rong, Q., Ceglarek, D., Shi, J., 2000 "Dimensional
Fault Diagnosis for Compliant Beam Structure Assemblies,"
Trans. of ASME, Journal of Manufacturing Science and
Engineering, Vol. 122, No. 4, pp. 773-780, also in 1998 ASME
International Mechanical Engineering Congress and Exposition,
Anaheim, CA, MED-Vol. 8, pp. 93-102.
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Rong, Q., Shi, J., Ceglarek, D., 2001 "Adjusted
Least Squares Approach for Diagnosis of Compliant Assemblies in the
Presence of Ill-conditioned Problems," Trans. of ASME,
Journal of Manufacturing Science and Engineering, Vol. 123, No.
3, pp. 453-461.
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