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There are a total of 127 record(s) matching your query.
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Nonlinear and Failure Analysis of Composite Structures
Author(s): Noor, Ahmed K.
Abstract: The overall goal of this research is to assess the effect of discontinuities and uncertainties on the nonlinear response and failure of stiffened composite panels subjected to combined mechanical and thermal loads. The key ...
NASA Center: Langley Research Center
Publication Year: 2002
Added to NTRS: 2008-06-02
Document ID: 20030004011
Research on Intelligent Synthesis Environments
Author(s): Noor, Ahmed K.; Loftin, R. Bowen
Abstract: Four research activities related to Intelligent Synthesis Environment (ISE) have been performed under this grant. The four activities are: 1) non-deterministic approaches that incorporate technologies such as intelligent ...
NASA Center: Langley Research Center
Publication Year: 2002
Added to NTRS: 2008-06-02
Document ID: 20030010359
Sensitivity analysis for the dynamic response of viscoplastic shells of revolution
Author(s): Kulkarni, Makarand; Noor, Ahmed K.
Abstract: A computational procedure is presented for evaluating the sensitivity coefficients of the dynamic axisymmetric response of viscoplastic shells of revolution. The analytical formulation is based on Reissner's large ...
NASA Center: NASA (non Center Specific)
Publication Year: 1995
Added to NTRS: 2008-06-02
Accession Number: 95N26268; Document ID: 19950019848
Effect of Discontinuities and Uncertainties on the Response and Failure of Composite Structures
Author(s): Noor, Ahmed K.; Perry, Ferman W.
Abstract: The overall goal of this research was to assess the effect of discontinuities and uncertainties on the nonlinear response and failure of composite structures subjected to combined mechanical and thermal loads. The four key ...
NASA Center: Langley Research Center
Publication Year: 2000
Added to NTRS: 2008-06-02
Document ID: 20010004734
Center for Advanced Computational Technology
Author(s): Noor, Ahmed K.
Abstract: The Center for Advanced Computational Technology (ACT) was established to serve as a focal point for diverse research activities pertaining to application of advanced computational technology to future aerospace systems. ...
NASA Center: Langley Research Center
Publication Year: 2000
Added to NTRS: 2008-06-02
Document ID: 20010006431
Global-local methodologies and their application to nonlinear analysis
Author(s): Noor, Ahmed K.
Abstract: An assessment is made of the potential of different global-local analysis strategies for predicting the nonlinear and postbuckling responses of structures. Two postbuckling problems of composite panels are used as benchmarks ...
NASA Center: NASA (non Center Specific)
Publication Year: 1989
Added to NTRS: 2008-05-30
Accession Number: 89N24647; Document ID: 19890015276
Exploiting symmetries in the modeling and analysis of tires
Author(s): Noor, Ahmed K.; Andersen, C. M.; Tanner, John A.
Abstract: A computational procedure is presented for reducing the size of the analysis models of tires having unsymmetric material, geometry and/or loading. The two key elements of the procedure when applied to anisotropic tires are: ...
NASA Center: Langley Research Center
Publication Year: 1989
Added to NTRS: 2008-05-30
Accession Number: 89N24653; Document ID: 19890015282
Sensitivity analysis for large-scale problems
Author(s): Noor, Ahmed K.; Whitworth, Sandra L.
Abstract: The development of efficient techniques for calculating sensitivity derivatives is studied. The objective is to present a computational procedure for calculating sensitivity derivatives as part of performing structural ...
NASA Center: Langley Research Center
Publication Year: 1987
Added to NTRS: 2008-05-29
Accession Number: 87N18878; Document ID: 19870009445
Nonlinear Analysis and Modeling of Tires
Author(s): Noor, Ahmed K.
Abstract: The objective of the study was to develop efficient modeling techniques and computational strategies for: (1) predicting the nonlinear response of tires subjected to inflation pressure, mechanical and thermal loads; (2) ...
NASA Center: Langley Research Center
Publication Year: 1996
Added to NTRS: 2006-09-29
Accession Number: 96N25674; Document ID: 19960022781; Report Number: NAS 1.26:200970, NASA-CR-200970, UVA/528370/CEAM96/101
Computational procedures for evaluating the sensitivity derivatives of vibration frequencies and Eigenmodes of framed structures
Author(s): Fetterman, Timothy L.; Noor, Ahmed K.
Abstract: Computational procedures are presented for evaluating the sensitivity derivatives of the vibration frequencies and eigenmodes of framed structures. Both a displacement and a mixed formulation are used. The two key elements ...
NASA Center: NASA (non Center Specific)
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N29899; Document ID: 19870020466; Report Number: NAS 1.26:4099, NASA-CR-4099
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