Improved Accuracy For Finite Element Structural Analysis Via A New Integrated Force Method

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Improved Accuracy for Finite Element Structural Analysis Via a New Integrated Force Method

Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 30 pages
File Size : 51,8 Mb
Release : 2018-07-04
Category : Electronic
ISBN : 1722294892

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Improved Accuracy for Finite Element Structural Analysis Via a New Integrated Force Method by National Aeronautics and Space Administration (NASA) Pdf

A comparative study was carried out to determine the accuracy of finite element analyses based on the stiffness method, a mixed method, and the new integrated force and dual integrated force methods. The numerical results were obtained with the following software: MSC/NASTRAN and ASKA for the stiffness method; an MHOST implementation method for the mixed method; and GIFT for the integrated force methods. The results indicate that on an overall basis, the stiffness and mixed methods present some limitations. The stiffness method generally requires a large number of elements in the model to achieve acceptable accuracy. The MHOST method tends to achieve a higher degree of accuracy for course models than does the stiffness method implemented by MSC/NASTRAN and ASKA. The two integrated force methods, which bestow simultaneous emphasis on stress equilibrium and strain compatibility, yield accurate solutions with fewer elements in a model. The full potential of these new integrated force methods remains largely unexploited, and they hold the promise of spawning new finite element structural analysis tools. Patnaik, Surya N. and Hopkins, Dale A. and Aiello, Robert A. and Berke, Laszlo Glenn Research Center RTOP 505-63-5B...

NASA Technical Paper

Author : Anonim
Publisher : Unknown
Page : 32 pages
File Size : 40,9 Mb
Release : 1992
Category : Science
ISBN : STANFORD:36105024800034

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NASA Technical Paper by Anonim Pdf

NASA Technical Paper

Author : United States. National Aeronautics and Space Administration
Publisher : Unknown
Page : 32 pages
File Size : 43,7 Mb
Release : 1992
Category : Aeronautics
ISBN : UOM:39015039956548

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NASA Technical Paper by United States. National Aeronautics and Space Administration Pdf

NASA Technical Memorandum

Author : Anonim
Publisher : Unknown
Page : 492 pages
File Size : 47,9 Mb
Release : 1994
Category : Aeronautics
ISBN : MINN:31951P00691495X

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NASA Technical Memorandum by Anonim Pdf