Frequency and Spatial Shaping of Inputs for Multiaxis Shaker Testing

Controlled amplitude and phase relationships between multiaxial shaker inputs (i.e., spatial shaping) provides for more realistic simulation of a service environment than does conventional frequency shaping alone. Spatial shaping is described in terms of a basic mathematical model relating test arti...

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Main Authors: Craig C. Smith, Forrest L. Staffanson
Format: Article
Language:English
Published: Wiley 1996-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.3233/SAV-1996-3601
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author Craig C. Smith
Forrest L. Staffanson
author_facet Craig C. Smith
Forrest L. Staffanson
author_sort Craig C. Smith
collection DOAJ
description Controlled amplitude and phase relationships between multiaxial shaker inputs (i.e., spatial shaping) provides for more realistic simulation of a service environment than does conventional frequency shaping alone. Spatial shaping is described in terms of a basic mathematical model relating test article response (absolute and relative motions) to excitation by the shaker. Advantages and objectives are viewed through spectral relationships. The objective of simulating dynamic responses as in service is shown to be the duplication of the resultant cross-modal response for all important modes, even if the sources of excitation in service are unknown.
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publishDate 1996-01-01
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series Shock and Vibration
spelling doaj-art-49647f84cb6a473d82bb717aaaf8bffb2025-08-20T02:17:46ZengWileyShock and Vibration1070-96221875-92031996-01-013639340110.3233/SAV-1996-3601Frequency and Spatial Shaping of Inputs for Multiaxis Shaker TestingCraig C. Smith0Forrest L. Staffanson1Department of Mechanical Engineering, Brigham Young University, Provo, UT 84602-4102, USAOgden Engineering Laboratory, TRW Strategic Systems Division, Ogden, UT 84403-2400, USAControlled amplitude and phase relationships between multiaxial shaker inputs (i.e., spatial shaping) provides for more realistic simulation of a service environment than does conventional frequency shaping alone. Spatial shaping is described in terms of a basic mathematical model relating test article response (absolute and relative motions) to excitation by the shaker. Advantages and objectives are viewed through spectral relationships. The objective of simulating dynamic responses as in service is shown to be the duplication of the resultant cross-modal response for all important modes, even if the sources of excitation in service are unknown.http://dx.doi.org/10.3233/SAV-1996-3601
spellingShingle Craig C. Smith
Forrest L. Staffanson
Frequency and Spatial Shaping of Inputs for Multiaxis Shaker Testing
Shock and Vibration
title Frequency and Spatial Shaping of Inputs for Multiaxis Shaker Testing
title_full Frequency and Spatial Shaping of Inputs for Multiaxis Shaker Testing
title_fullStr Frequency and Spatial Shaping of Inputs for Multiaxis Shaker Testing
title_full_unstemmed Frequency and Spatial Shaping of Inputs for Multiaxis Shaker Testing
title_short Frequency and Spatial Shaping of Inputs for Multiaxis Shaker Testing
title_sort frequency and spatial shaping of inputs for multiaxis shaker testing
url http://dx.doi.org/10.3233/SAV-1996-3601
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