A CAD–CAE integration approach using feature-based multi-resolution and multi-abstraction modelling techniques

Lee, Sang Hun

doi:10.1016/j.cad.2004.09.021

Cited by 161 publications

(83 citation statements)

References 39 publications

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“…A feature based non-manifold modeling system is developed by Lee et al to address the needs of both CAD and CAE applications simultaneously from a single model [Lee05b,Lee05c,Lee06a,Lee06b]. This system supports feature based multi-resolution and multi-abstraction modeling capabilities.…”

Section: Effective Volume Based Simplificationmentioning

confidence: 99%

A survey of CAD model simplification techniques for physics-based simulation applications

Thakur

Banerjee

Gupta

2009

Computer-Aided Design

163

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Automated CAD model simplification plays an important role in effectively utilizing physicsbased simulation during the product realization process. Currently a rich body of literature exists that describe many successful techniques for fully-automatic or semi-automatic simplification of CAD models for a wide variety of applications. The purpose of this paper is to compile a list of the techniques that are relevant for physics-based simulations problems and to characterize them based on their attributes. We have classified them into the following four categories: techniques based on surface entity based operators, volume entity based operators, explicit feature based operators, and dimension reduction operators. This paper also presents the necessary background information in the CAD model representation to assist the new readers. We conclude the paper by outlining open research directions in this field.

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Section: Effective Volume Based Simplificationmentioning

confidence: 99%

A survey of CAD model simplification techniques for physics-based simulation applications

Thakur

Banerjee

Gupta

2009

Computer-Aided Design

163

View full text Add to dashboard Cite

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“…The design intent at this stage has to be consistent with the guidelines specified in the conceptual design, such as required functions or design patterns (Lee 2005;Ma and Tong 2003). For example, Stefano et al (2004) used particular geometric characteristics in detailed designs to represent product functionality, but how to connect these geometric characteristics to the conceptual design for design validation was not mentioned.…”

Section: Detailed Design Featuresmentioning

confidence: 99%

“…Lee used a non-manifold topology to integrate design and analysis models (Lee 2005). Multiple levels of abstraction of each solid primitive are predefined in the corresponding feature classes and stored in a multi-dimensional model when features are generated.…”

Section: Multiple-view Feature Modelingmentioning

confidence: 99%

“…Following the pioneer work of Weiler (1988a,b), in which the radial edge structure was proposed to represent non-manifold geometries, the use of non-manifold geometric model to store canonical forms of the original objects, even if they are not on the final boundary, were discussed in Crocker and Reinke (1991);Masuda (1993). Non-manifold geometric models can be used to integrate applications (Sriram et al 1995;Lee 2005). However, these publications did not fully apply the multi-dimensional, non-manifold topology to feature-based product modeling processes.…”

Section: Multiple-view Geometric Representationmentioning

confidence: 99%

“…For example, the suppressibility feature attributes can be specified for idealization purpose . Lee used idealization features to integrate design and CAE analysis (Lee 2005). These idealization features contain the necessary information for the construction of models in different detail or abstraction levels.…”

Section: Cae Featuresmentioning

confidence: 99%

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Paradigm shift: unified and associative feature-based concurrent and collaborative engineering

Chen

Thimm

2008

J Intell Manuf

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With widely used concurrent and collaborative engineering technologies, the validity and consistency of product information become important. In order to establish the state of the art, this paper reviews emerging concurrent and collaborative engineering approaches and emphasizes on the integration of different application systems across product life cycle management (PLM) stages. It is revealed that checking product information validity is difficult for the current computer-aided systems because engineering intent is at best partially represented in product models. It is also not easy to maintain the consistency among related product models because information associations are not established. The purpose of this review is to identify and analyze research issues with respect to information integration and sharing for future concurrent and collaborative engineering. A new paradigm of research from the angle of feature unification and association for product modeling and manufacturing is subsequently proposed.Keywords Concurrent and collaborative engineering · Feature-based design and manufacturing · Product life cycle modeling · Information validity and consistency

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Defeaturing: A posteriori error analysis via feature sensitivity

Turevsky

Gopalakrishnan

Suresh

2008

Numerical Meth Engineering

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SUMMARYIt is well known that small geometric features within a CAD model can significantly impact the computational cost, and often undermine the reliability, of finite element analysis. Engineers therefore resort to defeaturing or detail removal, wherein the offending features are suppressed prior to computational analysis. However, this results in a defeaturing-induced analysis error.In this paper, we estimate this error in an a posteriori sense through the novel concept of feature sensitivity. The latter determines the first-order change in quantities of interest when an arbitrary cluster of small geometric features is deleted from a model. A formal theory and a set of associated algorithms are provided to compute the feature sensitivity associated with a scalar elliptic partial differential equation. The theory is supported through numerical experiments in 2-D, involving both internal and boundary features.

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A CAD–CAE integration approach using feature-based multi-resolution and multi-abstraction modelling techniques

Cited by 161 publications

References 39 publications

A survey of CAD model simplification techniques for physics-based simulation applications

A survey of CAD model simplification techniques for physics-based simulation applications

Paradigm shift: unified and associative feature-based concurrent and collaborative engineering

Defeaturing: A posteriori error analysis via feature sensitivity

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