Effects of Equipment Loading on the Vibrations of Edge-Stiffened Plates and Associated Modeling Issues

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Description

Predicting structural radiated noise is a process that involves several steps, often including the development of a finite element (FE) model to provide structural response predictions. Limitations of these FE models often govern the success of overall noise predictions. The purpose of the present investigation is to identify the effects of real world attachments on edge-stiffened plates and identify advanced modeling methods to facilitate vibroacoustic analyses of such complex structures. A combination of experimental and numerical methods is used in the evaluation. The results show the effects of adding attachments to the edge-stiffened plate in terms of mode shape mass ... continued below

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1263 Kilobytes pages

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Campbell, R.L. & Hambric, S.A. June 24, 2002.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

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  • Lockheed Martin
    Publisher Info: Lockheed Martin Corporation, Schenectady, NY 12301 (United States)
    Place of Publication: Schenectady, New York

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Description

Predicting structural radiated noise is a process that involves several steps, often including the development of a finite element (FE) model to provide structural response predictions. Limitations of these FE models often govern the success of overall noise predictions. The purpose of the present investigation is to identify the effects of real world attachments on edge-stiffened plates and identify advanced modeling methods to facilitate vibroacoustic analyses of such complex structures. A combination of experimental and numerical methods is used in the evaluation. The results show the effects of adding attachments to the edge-stiffened plate in terms of mode shape mass loading, creation of new mode shapes, modifications to original mode shapes, and variations in damping levels. A finite element model of the edge-stiffened plate with simplified attachments has been developed and is used in conjunction with experimental data to aid in the developments. The investigation presented here represents a necessary first step toward implementing an advanced modeling technique.

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1263 Kilobytes pages

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OSTI as DE00822283

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  • Other Information: PBD: 24 Jun 2002

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  • Report No.: LM-02K044
  • Grant Number: AC12-00SN39357
  • DOI: 10.2172/822283 | External Link
  • Office of Scientific & Technical Information Report Number: 822283
  • Archival Resource Key: ark:/67531/metadc788736

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  • June 24, 2002

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  • Dec. 3, 2015, 9:30 a.m.

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  • April 28, 2016, 8:43 p.m.

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Campbell, R.L. & Hambric, S.A. Effects of Equipment Loading on the Vibrations of Edge-Stiffened Plates and Associated Modeling Issues, report, June 24, 2002; Schenectady, New York. (digital.library.unt.edu/ark:/67531/metadc788736/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.