Výsledky vyhledávání - "Michelle T. Rudd"

SCALING METHODOLOGY FOR BUCKLING OF COMPOSITE CONICAL SHELLS IN AXIAL COMPRESSIONConical shells are commonly used as structural components for launch vehicles. The axial compression experienced during launch is one of the sizing load cases, because it can lead to loss of structural stability. Because experimentally testing these full-scale structures is cumbersome and expensive, it is expedient to understand how reduced-scale shells can be designed such that their buckling behavior is representative of the full-scale shell behavior. An analytical, sequential scaling methodology is developed based on the nondimensional governing equations for composite conical shells with a symmetric, balanced layup and negligible flexural anisotropy. Linear and nonlinear finite element analyses characterizing the buckling behavior of the different size shells yielded comparable results in terms of buckling load, meridional displacement, and buckling mode. The inclusion of geometric imperfections affects the prediction accuracy, but not to the extent that the methodology is no longer valid

Autor: Michelle T. Rudd, Kaat Pareyns, Chiara Bisagni, Marc R. Schultz

Publikováno v: American Society for Composites 2021.

Conical shells are commonly used as structural components for launch vehicles. The axial compression experienced during launch is one of the sizing load cases, because it can lead to loss of structural stability. Because experimentally testing these

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cdf334f547f5355ec9552982ea28681a
https://doi.org/10.12783/asc36/35769

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Buckling Testing of a Subscale Composite Cylinder

Autor: Nathaniel W. Gardner, Chiara Bisagni, Marc R. Schultz, Michelle T. Rudd, W. Allen Waters

Publikováno v: AIAA Scitech 2021 Forum: 11–15 & 19–21 January 2021Virtual/online event
AIAA Scitech 2021 Forum

A subscale solid laminate composite cylinder with a 31.5-in. diameter, a 48.2-in. length, and a [23/0/-23]4S layup was designated NDL-1 and was designed to fail in buckling after a series of subcritical tests. NDL-1 was experimentally loaded in axial

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b89ea97e35e7c7b4215a8d70797bfafd
https://doi.org/10.2514/6.2021-0205

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Test and Analysis of a Buckling-Critical Large-Scale Sandwich Composite Cylinder

Autor: Michelle T. Rudd, Tod Palm, David W. Sleight, Nathan J. Oldfield, Nathaniel W. Gardner, Marc R. Schultz, Mark W. Hilburger

Publikováno v: 2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference.

Structural stability is an important design consideration for launch-vehicle shell structures and it is well known that the buckling response of such shell structures can be very sensitive to small geometric imperfections. As part of an effort to dev

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::55bc6bb8bede70b68baaa781b4b77f09
https://doi.org/10.2514/6.2018-1693

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Buckling Response of a Large-Scale, Seamless, Orthogrid- Stiffened Metallic Cylinder

Autor: Marc R. Schultz, Andrew E. Lovejoy, Michael C. Lindell, Michelle T. Rudd, Nathaniel W. Gardner, Mark W. Hilburger

Publikováno v: 2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference.

Results from the buckling test of a compression-loaded 8-ft-diameter seamless (i.e., without manufacturing joints), orthogrid-stiffened metallic cylinder are presented. This test was used to assess the buckling response and imperfection sensitivity c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::43fb081e112099604747a00d523331eb
https://doi.org/10.2514/6.2018-1987

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Implementation of Fiber Optic Sensing System on Sandwich Composite Cylinder Buckling Test

Autor: Allen R. Parker, Francisco Pena, W. Lance Richards, Nathaniel W. Gardner, Michelle T. Rudd, Anthony Piazza, Mark W. Hilburger, Marc R. Schultz

Publikováno v: 2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference.

The National Aeronautics and Space Administration (NASA) Engineering and Safety Center Shell Buckling Knockdown Factor Project is a multicenter project tasked with developing new analysis-based shell buckling design guidelines and design factors (i.e

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aff88395e08e2e5674ce0c28ff037d82
https://doi.org/10.2514/6.2018-1695

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