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There are a total of 10 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Calculation of stress intensity factors in an isotropic multicracked plate: Part 2: Symbolic/numeric implementation
Author(s): Arnold, S. M.; Binienda, W. K.; Tan, H. Q.; Xu, M. H.
Abstract: Analytical derivations of stress intensity factors (SIF's) of a multicracked plate can be complex and tedious. Recent advances, however, in intelligent application of symbolic computation can overcome these difficulties and ...
NASA Center: Glenn Research Center
Publication Year: 1992
Added to NTRS: 2005-08-25
Accession Number: 93N10453; Document ID: 19930001265; Report Number: E-7254, NAS 1.15:105823, NASA-TM-105823
Application of symbolic computations to the constitutive modeling of structural materials
Author(s): Arnold, Steven M.; Tan, H. Q.; Dong, X.
Abstract: In applications involving elevated temperatures, the derivation of mathematical expressions (constitutive equations) describing the material behavior can be quite time consuming, involved and error-prone. Therefore ...
NASA Center: Glenn Research Center
Publication Year: 1990
Added to NTRS: 2005-08-25
Accession Number: 90N26364; Document ID: 19900017048; Report Number: E-5641, NAS 1.15:103225, NASA-TM-103225
Computer simulation of the mathematical modeling involved in constitutive equation development: Via symbolic computations
Author(s): Arnold, S. M.; Tan, H. Q.; Dong, X.
Abstract: Development of new material models for describing the high temperature constitutive behavior of real materials represents an important area of research in engineering disciplines. Derivation of mathematical expressions ...
NASA Center: Glenn Research Center
Publication Year: 1989
Added to NTRS: 2005-08-25
Accession Number: 90N20428; Document ID: 19900011112; Report Number: E-5276, NAS 1.15:102532, NASA-TM-102532
Calculation of stress intensity factors in an isotropic multicracked plate. Part 1: Theoretical development
Author(s): Binienda, W. K.; Arnold, S. M.; Tan, H. Q.
Abstract: An essential part of describing the damage state and predicting the damage growth in a multicracked plate is the accurate calculation of stress intensity factors (SIF's). Here, a methodology and rigorous solution formulation ...
NASA Center: Glenn Research Center
Publication Year: 1992
Added to NTRS: 2005-08-25
Accession Number: 93N10455; Document ID: 19930001267; Report Number: E-7183, NAS 1.15:105766, NASA-TM-105766
Explicit robust schemes for implementation of a class of principal value-based constitutive models: Symbolic and numeric implementation
Author(s): Arnold, S. M.; Saleeb, A. F.; Tan, H. Q.; Zhang, Y.
Abstract: The issue of developing effective and robust schemes to implement a class of the Ogden-type hyperelastic constitutive models is addressed. To this end, special purpose functions (running under MACSYMA) are developed for the ...
NASA Center: Glenn Research Center
Publication Year: 1993
Added to NTRS: 2005-08-25
Accession Number: 93N26946; Document ID: 19930017757; Report Number: E-7788, NAS 1.15:106124, NASA-TM-106124
On the symbolic manipulation and code generation for elasto-plastic material matrices
Author(s): Chang, T. Y.; Saleeb, A. F.; Wang, P. S.; Tan, H. Q.
Abstract: A computerized procedure for symbolic manipulations and FORTRAN code generation of an elasto-plastic material matrix for finite element applications is presented. Special emphasis is placed on expression simplifications ...
NASA Center: NASA (non Center Specific)
Publication Year: 1991
Added to NTRS: 2005-08-25
Accession Number: 92N11375; Document ID: 19920002157; Report Number: NAS 1.26:187223, NASA-CR-187223
Explicit robust schemes for implementation of general principal value-based constitutive models
Author(s): Arnold, S. M.; Saleeb, A. F.; Tan, H. Q.; Zhang, Y.
Abstract: The issue of developing effective and robust schemes to implement general hyperelastic constitutive models is addressed. To this end, special purpose functions are used to symbolically derive, evaluate, and automatically ...
NASA Center: Glenn Research Center
Publication Year: 1993
Added to NTRS: 2005-08-25
Accession Number: 93N26947; Document ID: 19930017758; Report Number: E-7787, NAS 1.15:106123, NASA-TM-106123
On the symbolic manipulation and code generation for elasto-plastic material matrices
Author(s): Chang, T. Y.; Saleeb, A. F.; Wang, P. S.; Tan, H. Q.
Abstract: A computerized procedure for symbolic manipulations and FORTRAN code generation of elastoplastic material matrix for finite element applications is presented. Special emphasis is placed on expression simplifications during ...
NASA Center: NASA (non Center Specific)
Publication Year: 1986
Added to NTRS: 2004-11-03
Accession Number: 87A18499; Document ID: 19870031225
Symbolic derivation of material property matrices in finite element analysis
Author(s): Tan, H. Q.
Abstract: The principles and operation of MMAX, a symbolic-computation program which automates the process of generating property matrices for structural materials, are briefly described and illustrated with sample analyses of a ...
NASA Center: NASA (non Center Specific)
Publication Year: 1988
Added to NTRS: 2004-11-03
Accession Number: 89A34964; Document ID: 19890047593
Symbolic generation of constitutive equations
Author(s): Tan, H. Q.; Dong, X.; Arnold, S. M.
Abstract: The use of the symbolic manipulation program MACSYMA for the automatic generation of constitutive equations describing the thermomechanical behavior of complex materials such as metal-matrix composites is demonstrated. ...
NASA Center: Glenn Research Center
Publication Year: 1988
Added to NTRS: 2004-11-03
Accession Number: 89A34963; Document ID: 19890047592
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