A Modified Vapeps Method for Predicting Vibroacoustic Response of Unreinforced Mass Loaded Honeycomb Panels
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Home > Reference > Research and information: general > Research methods: general > A Modified Vapeps Method for Predicting Vibroacoustic Response of Unreinforced Mass Loaded Honeycomb Panels
A Modified Vapeps Method for Predicting Vibroacoustic Response of Unreinforced Mass Loaded Honeycomb Panels

A Modified Vapeps Method for Predicting Vibroacoustic Response of Unreinforced Mass Loaded Honeycomb Panels


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About the Book

VAPEPS (VibroAcoustic Payload Environment Prediction System) is a computer program used to predict the vibroacoustic response of a structure. An alternate VAPEPS modeling technique, the Modified NASA Lewis Method, is an improvement for modeling unreinforced mass loaded honeycomb panels. The Modified NASA Lewis Method prediction is compared to the standard ASMS VAPEPS prediction, and the acoustic test data for three spacecraft panels. An analytical method of computing variance is presented and used to compute 95 percent confidence levels. These levels are compared to the standard VAPEPS confidence levels and to the envelope of the test data. As a result of using the new methodology suggested in the paper, both the mean prediction and the 95 percent confidence level prediction agree well with the test data in both spectral shape and magnitude. Therefore, the Modified NASA Lewis Method prediction methodology may be used to define more realistic random vibration test levels. Mcnelis, Mark E. Glenn Research Center NASA-TM-101467, E-4579, NAS 1.15:101467 RTOP 474-12-10...


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Product Details
  • ISBN-13: 9781725001985
  • Publisher: Createspace Independent Publishing Platform
  • Publisher Imprint: Createspace Independent Publishing Platform
  • Height: 279 mm
  • No of Pages: 28
  • Spine Width: 2 mm
  • Width: 216 mm
  • ISBN-10: 1725001985
  • Publisher Date: 09 Aug 2018
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 91 gr


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A Modified Vapeps Method for Predicting Vibroacoustic Response of Unreinforced Mass Loaded Honeycomb Panels
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