Skin Model Shapes: A new paradigm shift for geometric variations modelling in mechanical engineering

Schleich, Benjamin; Anwer, Nabil; Mathieu, Luc; Wartzack, Sandro

doi:10.1016/j.cad.2014.01.001

Cited by 225 publications

(108 citation statements)

References 25 publications

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“…The experiences from GPS standardization and recent research efforts on tolerancing led to the insight that only the differentiation between the real workpiece, its abstract and conceptual model (Skin Model), and the virtual representation of this abstract model allows for a clear understanding as well as a forward-looking language for geometrical variations management. Consequently, the concept of Skin Model Shapes has been developed for the virtual representation of the Skin Model based on discrete geometry representation schemes [15]. With similarity to this, we propose a differentiation between the abstraction of the digital twin and its representation (Fig.…”

Section: Model Abstraction and Representationmentioning

confidence: 99%

Shaping the digital twin for design and production engineering

et al. 2017

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Abstract:The digitalization of manufacturing fuels the application of sophisticated virtual product models, which are referred to as digital twins, throughout all stages of product realization. Particularly, more realistic virtual models of manufactured products are essential to bridge the gap between design and manufacturing and to mirror the real and virtual worlds. In this paper, we propose a comprehensive reference model based on the concept of Skin Model Shapes, which serves as a digital twin of the physical product in design and manufacturing. In this regard, model conceptualization, representation, and implementation as well as applications along the product life-cycle are addressed.

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Section: Model Abstraction and Representationmentioning

confidence: 99%

Shaping the digital twin for design and production engineering

et al. 2017

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“…It has been used in some recent works by Schleich et al [11,23], for the assembly simulation of over-constrained systems. Skin Model shapes were used by Schleich et al [24] as a finite model to illustrate the specific realizations of the skin model in conjunction with geometric deviations being resulted from manufacturing and assembly processes. In short, the skin model shapes are specific outcomes of the skin model employing discrete geometry representation schemes, such as point clouds and surface meshes.…”

Section: Geometrical Defects Modelingmentioning

confidence: 99%

Tolerance analysis — Form defects modeling and simulation by modal decomposition and optimization

Homri

Goka

Levasseur

et al. 2017

Computer-Aided Design

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. Tolerance analysis aims on checking whether specified tolerances enable functional and assembly requirements. The tolerance analysis approaches discussed in literature are generally assumed without the consideration of parts' form defects. This paper presents a new model to consider the form defects in an assembly simulation. A Metric Modal Decomposition (MMD) method is henceforth, developed to model the form defects of various parts in a mechanism. The assemblies including form defects are further assessed using mathematical optimization. The optimization involves two models of surfaces: real model and difference surface-base method, and introduces the concept of signed distance. The optimization algorithms are then compared in terms of time consumption and accuracy. To illustrate the methods and their respective applications, a simplified over-constrained industrial mechanism in three dimensions is also used as a case study.

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“…Its goal is to establish a theoretical foundation for the modelling and processing of product's shape and variability, and to develop methods for geometric reasoning to infer knowledge and enable decision making in the product development process [2]. This paper investigates the fundamentals of shape representation, shape processing and mining at a conceptual, geometric and computational level to address geometric reverse engineering issues in mechanical design.…”

Section: Introductionmentioning

confidence: 99%

From reverse engineering to shape engineering in mechanical design

Anwer

Mathieu

2016

CIRP Annals

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Reverse engineering and shape reconstruction play an important role in design and manufacturing through the increased use of shape acquisition and processing technologies in the product development process. The application of shape theories to geometric modelling and variability characterization are paving the way to shape engineering and more generic methods for reverse engineering. This paper investigates the fundamentals of shape representation, shape processing and mining at a conceptual, geometric and computational level to address geometric reverse engineering issues in mechanical design. New developed concepts based on discrete curvatures and their applications are presented. Challenges and future researches are also highlighted.

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Skin Model Shapes: A new paradigm shift for geometric variations modelling in mechanical engineering

Cited by 225 publications

References 25 publications

Shaping the digital twin for design and production engineering

Shaping the digital twin for design and production engineering

Tolerance analysis — Form defects modeling and simulation by modal decomposition and optimization

From reverse engineering to shape engineering in mechanical design

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