A user`s manual for the program TRES4: Random vibration analysis of vertical-axis wind turbines in turbulent winds

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Description

TRES4 is a software package that works with the MSC/NASTRAN finite element analysis code to conduct random vibration analysis of vertical-axis wind turbines. The loads on the turbine are calculated in the time domain to retain the nonlinearities of stalled aerodynamic loadings. The loads are transformed into modal coordinates to reduce the number of degrees of freedom. Power spectra and cross spectra of the loads are calculated in the modal coordinate system. These loads are written in NASTRAN Bulk Data format to be read and applied in a random vibration analysis by NASTRAN. The resulting response is then transformed back ... continued below

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40 p.

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Creator: Unknown. March 1994.

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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. It has been viewed 37 times . More information about this report can be viewed below.

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Description

TRES4 is a software package that works with the MSC/NASTRAN finite element analysis code to conduct random vibration analysis of vertical-axis wind turbines. The loads on the turbine are calculated in the time domain to retain the nonlinearities of stalled aerodynamic loadings. The loads are transformed into modal coordinates to reduce the number of degrees of freedom. Power spectra and cross spectra of the loads are calculated in the modal coordinate system. These loads are written in NASTRAN Bulk Data format to be read and applied in a random vibration analysis by NASTRAN. The resulting response is then transformed back to physical coordinates to facilitate user interpretation.

Physical Description

40 p.

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OSTI as DE94009012

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  • Other Information: PBD: Mar 1994

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  • Other: DE94009012
  • Report No.: SAND--93-7015
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/143973 | External Link
  • Office of Scientific & Technical Information Report Number: 143973
  • Archival Resource Key: ark:/67531/metadc624590

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • March 1994

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 14, 2016, 2:08 p.m.

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A user`s manual for the program TRES4: Random vibration analysis of vertical-axis wind turbines in turbulent winds, report, March 1994; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc624590/: accessed November 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.