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  • 1
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    Static, stability, and dynamic analysis of shells of revolution by numerical integration - A comparison (1974)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Recent innovations in digital computer technology have enabled engineers to analyze shell structures of complex configurations without unduly restrictive approximations. An attempt is made to compare the various programs now generally available from the point of view of the advantages of the relative technique utilized, as well as the programmed state of the art. Many of the comparisons are based on the sample problems solved by the STARS-2 system of programs. These examples indicate both the structural detail which can be analyzed by, and the analytical capabilities available in, the numerical shell-of-revolution programs. All advantages and differences are demonstrated by use of solutions for realistic shell problems in the areas of statics, stability, vibrations, and dynamic response of shells subjected to time-dependent loadings.
    Keywords: STRUCTURAL MECHANICS
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  • 2
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    Symmetric stiffness matrix for incompressible hyperelastic materials (1976)
    In:  Other Sources
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    Publication Date: 2011-08-16
    Description: Symmetric structure matrices are derived for solving plane strain and axisymmetric problems involving incompressible hyperelastic materials. An infinite hollow cylinder subjected to internal pressure is considered as an example. Displacement and hydrostatic pressure profiles are calculated using the Newton-Raphson iteration technique. The results are in good agreement with the exact curves.
    Keywords: STRUCTURAL MECHANICS
    Type: AIAA Journal; 14; Mar. 197
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  • 3
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    Numerical analysis of finite axisymmetric deformations of incompressible elastic solids of revolution (1970)
    In:  Other Sources
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    Publication Date: 2019-06-27
    Description: Finite element method applicaions to finite axisymmetric deformations of incompressible elastic solids of revolution
    Keywords: STRUCTURAL MECHANICS
    Type: ; ADEMIE DES SCIENCES
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  • 4
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    Isogrid structures (1975)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: Test results and related structural instability analyses are presented for a 10-foot-diameter, 37-inch-long cylinder, and a 10-foot-diameter, 40-inch-long, 45-degree conical frustum. Both structures are based upon flanged isogrids and are fabricated in 2024-T851 aluminum. Peak edge load intensities at failure were 1,654 lb/in for the cylinder and 1,457 lb/in at the small diameter of the frustum. General instability cylindrical-monocoque-structure equivalent knockdown factors for both were in good agreement (gamma = 0.48). Design analysis is also derived for estimating critical cylinder instability edge loads from the performance of two tandem isogrid members. Evaluation is made of effective skin contributing to isogrid load-carrying cross-section.
    Keywords: STRUCTURAL MECHANICS
    Type: AIAA PAPER 75-816 , AIAA, ASME, and SAE, Structures, Structural Dynamics, and Materials Conference; May 27, 1975 - May 29, 1975; Denver, CO
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  • 5
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    Displacement incrementation in non-linear structural analysis by the self-correcting method (1977)
    In:  Other Sources
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    Publication Date: 2019-06-27
    Description: The prediction of nonlinear structural behavior by the finite element method wherein buckling does not occur has received considerable attention and, with it, reasonable success has been achieved. However, the post-buckling problem has been less actively pursued probably because of the inherent numerical difficulties encountered. This note reviews very briefly the numerical methods currently being used for pre- and post-buckling analysis and presents a self-correcting approach based on load and displacement incrementation which is shown to be efficient, reliable, and easy to program. Numerical solutions are presented which demonstrate the effectiveness of the method.
    Keywords: STRUCTURAL MECHANICS
    Type: International Journal for Numerical Methods in Engineering; 11; 1, 19; 1977
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  • 6
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    Analysis of finite deformations of elastic solids by the finite element method. (1971)
    In:  Other Sources
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    Publication Date: 2019-07-13
    Description: Finite element applications, particularly to analyses of finite deformations in elastic solids, are reviewed, along with the difficulties encountered in the formulation of certain problems and in their numerical solution. Various approaches are discussed for overcoming these and other difficulties. A computer program designed for finite elasticity problems is described, and several numerical examples are presented.
    Keywords: STRUCTURAL MECHANICS
    Type: Symposium on High speed computing of elastic structures; Aug 23, 1970 - Aug 28, 1970; Liege; Belgium
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