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You searched on: Author: ram sriram

Displaying records 101 to 110 of 141 records.
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101. A Product Information Modeling Framework For Product Lifecycle Management
Published: 6/1/2003
Authors: Steven J. Fenves, Ram D Sriram, Sudarsan Rachuri, Fujun Wang
Abstract: We describe a framework for representing products based on the NIST Core Product Model (CPM) and its extensions, the Open Assembly Model (OAM), the Design-Analysis Integration model (DAIM), and the Product Family Evolution Model (PFEM). These are abs ...

102. A System for Generating Process and Material Selection Advice During Embodiment Design of Mechanical Components
Published: 6/1/2003
Authors: Satyandra K. Gupta, Y Chen, Shaw C Feng, Ram D Sriram
Abstract: This paper describes (1) a systematic approach to material and process selection during embodiment design of mechanical components, (2) algorithms for supporting various steps in our approach, and (3) a system for generating process and material sele ...

103. Functional Tolerancing of a Gearbox
Published: 6/1/2003
Authors: H Wang, Utpal Roy, Sudarsan Rachuri, Ram D Sriram, Kevin W Lyons
Abstract: This paper proposes a scheme for the tolerance specification that uses the features? function information and mating condition attributes in the assembly to derive an appropriate tolerance specification as per the design intents. The proposed mirror ...

104. Master Product Model for the Support of Tighter Integration of Spatial and Functional Design
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7004
Published: 6/1/2003
Authors: Steven J. Fenves, Young Choi, Balan Gurumoorthy, Greg Mocko, Ram D Sriram
Abstract: In this report, we review current engineering practices and the research literature in the area of design - analysis integration in the product development process. We then propose a conceptual data architecture that can provide the technical basis f ...

105. Tolerance Synthesis Scheme
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6836
Published: 6/1/2003
Authors: Utpal Roy, N Pramanik, Sudarsan Rachuri, Ram D Sriram, Kevin W Lyons
Abstract: The objective of this report is to identify representations and issues for the generic assembly information model and its use in a proactive tolerance synthesis scheme. It is proposed to use the small displacement torsors (the screw parameters) as a ...

106. Towards Modeling the Evolution of Product Families
Published: 6/1/2003
Authors: Fujun Wang, Steven J. Fenves, Sudarsan Rachuri, Ram D Sriram
Abstract: A strategy successfully used by manufacturing companies is to develop product families so as to offer a variety of products with reduced development costs. This paper introduces our initial research on the representation of the evolution of product f ...

107. A Proposed ISO 10303 (STEP)-based Approach for Representing Heterogeneous Objects for Layered Manufacturing
Published: 8/1/2002
Authors: Lalit Patil, D Dutta, Amba D. Bhatt, Kevin K Jurrens, Kevin W Lyons, Mike Pratt, Ram D Sriram
Abstract: Solid modeling of objects forms an important task in design and manufacturing.Recent developments in the field of layered manufacturing (LM) have shown potentialor the physical realization of heterogeneous (multi-material) objects. Thus, there is a n ...

108. A Scheme for Transformation of Tolerance Specifications to Generalized Deviation Space for Use in Tolerance Synthesis and Analysis
Published: 7/1/2002
Authors: H Wang, N Pramanik, Utpal Roy, Sudarsan Rachuri, Ram D Sriram, Kevin W Lyons
Abstract: Traditionally tolerances for manufactured parts are specified using symbolic schemes as per ASME or ISO standards. To use these tolerance specifications in computerized tolerance synthesis and analysis, we need an information model to represent the t ...

109. A Decomposition-Based Approach to Layered Manufacturing
Published: 6/1/2002
Authors: I Llinkin, R Janardan, J J Majhi, J Schwerdt, Miles E. Smid, Ram D Sriram
Abstract: This paper introduces a new approach for improving the performance and versatility of Layered Manufacturing (LM), which is an emerging technology that makes it possible to build physical prototypes of 3D parts directly from their computer models usin ...

110. Progress Towards an International Standard for Data Transfer in Rapid Prototyping and Layered Manufacturing
Published: 5/1/2002
Authors: Mike Pratt, Amba D. Bhatt, D Dutta, Kevin W Lyons, Lalit Patil, Ram D Sriram
Abstract: This paper discusses the informational requirements of rapid prototyping and layered manufacturing (RPLM). The study is motivated by the recent decision to embark on the development of a new Application Protocol for the international standard ISO 103 ...

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