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Representation and Reasoning of Geometric Tolerances in Design
Artificial Intelligence for Engineering Design, Analysis and Manufacturing: AIEDAM, 1997AbstractThe geometric dimensioning and tolerancing (GD&T) specifications of a design are directly associated with its performance and functional requirements. They also govern the manufacturing and quality control processes needed to achieve those requirements.
Jhy-Cherng Tsai, Mark Cutkosky
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Geometric Tolerance Specification
2011In conventional tolerancing, the efforts of designers are mainly directed at selecting suitable values for linear tolerances on part dimensions. These are either determined by trial and error through analysis calculations or optimized according to cost functions.
ARMILLOTTA, ANTONIO, SEMERARO, QUIRICO
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Geometric tolerancing: II. Conditional tolerances
IBM Journal of Research and Development, 1989Summary: We examined the representation of geometric tolerances in solid models from the perspective of certain functional requirements. We showed that assembly and material bulk requirements can be specified as virtual boundary requirements (VBRs). Here, we study the related issue of deriving equivalent alternative specifications.
Vijay Srinivasan, Rangarajan Jayaraman
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Statistical verification of conformance to geometric tolerance
Computer-Aided Design, 1994Abstract Modern coordinate measurement machines have provided industry with new tools for inspecting complex parts. This paper develops statistical procedures that complement these inspection methods, and it ties the conformance problem into the hypothesis testing formalism of conventional statistics.
Thomas R. Kurfess, David L. Banks
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Tolerances in Computer-Aided Geometric Design
Visual Computer, 1987In the design of discrete part shapes, the specification of tolerance constraints can have major consequences for product quality and cost. Traditional methods for tolerance analysis and synthesis are time-consuming and have limited applicability. The thesis of this work is that geometric design systems based on solid modeling technology can be used to
Michael J Wozny
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Statistical geometric computation on tolerances for dimensioning
Computer-Aided Design, 2016Dimensions are used to specify the distances between different features in geometric models. These dimensions will often be expressed as a range of allowable dimensions. When considering a group of toleranced dimensions, these ranges can be analyzed as either a worst-case bound on allowable ranges, or as a statistical measure of expected distribution ...
Songgang Xu, John Keyser
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2011
This chapter focuses on five main literature models of geometric tolerance analysis – vector loop, variational, matrix, Jacobian, and torsor – and makes a comparison between them in order to highlight the advantages and the weaknesses of each, with the goal of providing a criterion for selecting the most suitable one, depending on the application.
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This chapter focuses on five main literature models of geometric tolerance analysis – vector loop, variational, matrix, Jacobian, and torsor – and makes a comparison between them in order to highlight the advantages and the weaknesses of each, with the goal of providing a criterion for selecting the most suitable one, depending on the application.
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Error-Tolerant Geometric Graph Similarity
2018Graph matching is the task of computing the similarity between two graphs. Error-tolerant graph matching is a type of graph matching, in which a similarity between two graphs is computed based on some tolerance value whereas within exact graph matching a strict one-to-one correspondence is required between two graphs.
Shri Prakash Dwivedi, Ravi Shankar Singh
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Dimensioning with Geometrical Tolerances
2020The advantages of the geometric specification of a product are here illustrated by converting a traditional 2D coordinate tolerancing drawing using the geometrical tolerance method. The new language of symbols permits the functional requirements of the products to be fully expressed in technical documentation.
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