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There are a total of 17 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Low velocity impact analysis with NASTRAN
Author(s): Trowbridge, Daniel A.; Grady, Joseph E.; Aiello, Robert A.
Abstract: A nonlinear elastic force-displacement relationship is used to calculate the transient impact force and local deformation at the point of contact between impactor and target. The nonlinear analysis and transfer function ...
NASA Center: Glenn Research Center
Publication Year: 1990
Added to NTRS: 2008-05-31
Accession Number: 90N24647; Document ID: 19900015331
The composite blade structural analyzer (COBSTRAN)
Author(s): Aiello, Robert A.
Abstract: The use and application of the COBSTRAN (COmposite Blade STRuctural ANalyzer) computer code is presented. COBSTRAN was developed at NASA-Lewis and is currently being used for the design and analysis of aircraft engine ducted ...
NASA Center: Glenn Research Center
Publication Year: 1988
Added to NTRS: 2008-05-30
Accession Number: 88N22390; Document ID: 19880013006
A NASTRAN DMAP alter for linear buckling analysis under dynamic loading
Author(s): Aiello, Robert A.; Grady, Joseph E.
Abstract: A modification to the NASTRAN solution sequence for transient analysis with direct time integration (COSMIC NASTRAN rigid format 9) was developed and incorporated into a DMAP alter. This DMAP alter calculates the buckling ...
NASA Center: Glenn Research Center
Publication Year: 1989
Added to NTRS: 2008-05-30
Accession Number: 89N22948; Document ID: 19890013577
Dynamic delamination buckling in composite laminates under impact loading: Computational simulation
Author(s): Grady, Joseph E.; Chamis, Christos C.; Aiello, Robert A.
Abstract: A unique dynamic delamination buckling and delamination propagation analysis capability has been developed and incorporated into a finite element computer program. This capability consists of the following: (1) a ...
NASA Center: Glenn Research Center
Publication Year: 1987
Added to NTRS: 2005-10-13
Accession Number: 87N28611; Document ID: 19870019178; Report Number: E-3779, NAS 1.15:100192, NASA-TM-100192
Dynamic Delamination Buckling In Composite Laminates
Author(s): Grady, Joseph E.; Chamis, Christos C.; Aiello, Robert A.
Abstract: Procedure for mathematical modeling of dynamic delamination buckling and propagation of delamination, with plate bending elements and multipoint constraints, developed and incorporated into finite-element computer program. ...
NASA Center: Glenn Research Center
Publication Year: 1989
Added to NTRS: 2005-09-30
Accession Number: 89B10461; Document ID: 19890000461; Report Number: LEW-14745
Using NASTRAN To Analyze Vibrations Of Rotor Blades
Author(s): Lawrence, Charles; Aiello, Robert A.; Ernst, Michael A.; Mcgee, Oliver G.
Abstract: Report gives information on use of NASTRAN computer program in finite-element analysis of rotating flexible blades like in compressors and on turboprop engines. Predicts steady-state components of deflections and stresses ...
NASA Center: Glenn Research Center
Publication Year: 1989
Added to NTRS: 2005-09-30
Accession Number: 89B10527; Document ID: 19890000527; Report Number: LEW-14799
Composite blade structural analyzer (COBSTRAN) user's manual
Author(s): Aiello, Robert A.
Abstract: The installation and use of a computer code, COBSTRAN (COmposite Blade STRuctrual ANalyzer), developed for the design and analysis of composite turbofan and turboprop blades and also for composite wind turbine blades was ...
NASA Center: Glenn Research Center
Publication Year: 1989
Added to NTRS: 2005-08-25
Accession Number: 89N23621; Document ID: 19890014250; Report Number: E-4570, NAS 1.15:101461, NASA-TM-101461
Quantification of Processing Effects on Filament Wound Pressure Vessels
Author(s): Aiello, Robert A.; Chamis, Christos C.
Abstract: A computational simulation procedure is described which is designed specifically for the modeling and analysis of filament wound pressure vessels. Cylindrical vessels with spherical or elliptical end caps can be generated ...
NASA Center: Glenn Research Center
Publication Year: 1999
Added to NTRS: 2005-08-25
Document ID: 20000017929; Report Number: E-11899, NAS 1.15:209434, NASA/TM-1999-209434
A NASTRAN DMAP alter for linear buckling analysis under dynamic loading
Author(s): Aiello, Robert A.; Grady, Joseph E.
Abstract: A unique modification to the NASTRAN solution sequence for transient analysis with direct time integration (COSMIC NASTRAN rigid format 9) was developed and incorporated into a DMAP alter. This DMAP alter calculates the ...
NASA Center: Glenn Research Center
Publication Year: 1988
Added to NTRS: 2005-08-25
Accession Number: 89N13522; Document ID: 19890004151; Report Number: E-4022, NAS 1.15:100832, NASA-TM-100832
Composite Blade Structural Analyzer (COBSTRAN) theoretical/programmer's manual
Author(s): Aiello, Robert A.; Chamis, Christos C.
Abstract: This manual describes the organization and flow of data and analysis in the computer code, COBSTRAN (COmposite Blade STRuctural ANalyzer). This code combines composite mechanics and laminate theory with an internal data base ...
NASA Center: Glenn Research Center
Publication Year: 1989
Added to NTRS: 2005-08-25
Accession Number: 90N10181; Document ID: 19900000865; Report Number: E-4986, NAS 1.15:101958, NASA-TM-101958
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