Modeling Method and Application in Digital Mockup System towards Mechanical Product

Zhang, Huai Yu; Li, Jia

doi:10.4028/www.scientific.net/amr.605-607.604

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…From its beginning at the concept design phase to its use throughout the entire lifecycle of the aircraft, the DMU ensures that up to date information is accessible to all teams and individuals who are working concurrently on the program. The DMU has been defined in broader literature as a digital 3D representation of a product, its assemblies, structure and attributes -a 'virtual product reference', [6,8,9]. In the late 1980s, the Boeing Company pioneered the DMU as the major design tool during the development of their B777 aircraft [10].…”

Section: A Dmu In Product Developmentmentioning

confidence: 99%

Tolerance aware product development using an enriched hybrid digital mock up

Friel

Butterfield

Robinson

et al. 2020

CIRP Journal of Manufacturing Science and Technology

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Current practice in three-dimensional (3D) part construction and product assembly within a digital mock-up (DMU) is based on the nominal sizing of geometry. This approach does not reflect real part dimensions when they are manufactured or the assembly conditions as they come together during the final build. The value of virtual assembly planning (VAP) using clash and gap detection is therefore limited to modelling error identification within the computer-aided design (CAD) domain for nominal conditions only. VAP could become a significantly more powerful tool if the 3D representation of components within the DMU were more representative of 'as manufactured' dimensions. This paper presents the evolution and validation of an enriched DMU (EDMU) introducing the concept of the hybrid assembly which represents components in sizes which can range between upper and lower dimensional limits in addition to the nominally defined form. The resulting capability has been exploited to enable a designer to perform tolerance analysis in the CAD domain in advance of manufacturing planning, allowing tolerance consideration earlier in the design process as the DMU evolves. This has the potential to reduce the time, effort and computational load associated with the application of statistical tolerance analysis by methods engineers later in the product development cycle when the costs associated with change are higher.

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Section: A Dmu In Product Developmentmentioning

confidence: 99%

Tolerance aware product development using an enriched hybrid digital mock up

Friel

Butterfield

Robinson

et al. 2020

CIRP Journal of Manufacturing Science and Technology

View full text Add to dashboard Cite

show abstract

“…5,6 Dimensional control is usually only considered when the design is complete, 7 at which stage 85% of the design’s life cycle costs have been committed as a result of decisions already made, and the cost of any further change increases exponentially. 8 With industry’s outlook of using DMUs earlier in design, giving it a new role for analysis, optimisation and simulation, 9,10 it is important to address the challenges associated with capturing usable manufacturing data in a CAD system.…”

Section: Introductionmentioning

confidence: 99%