Aeromechanical behavior of selected Douglas-fir

✍ Scribed by H.R. Holbo; T.C. Corbett; P.J. Horton

• Book ID: 102981306
• Publisher: Elsevier Science
• Year: 1980
• Weight: 571 KB
• Volume: 21
• Category: Article
• ISSN: 0002-1571
• DOI: 10.1016/0002-1571(80)90056-4

✦ Synopsis

The aeromechanical behavior of three Douglas-fir is described, using wind shear force as the input variable and tree deflection as the output variable. Variance spectra maxima of wind-produced tree deflection were always higher in frequency than the incident shear force. A compliance transfer relation developed from these variables indicated a marked tendency for vibrations to build up as turbulent energy in the wind increased. This analytical form is proposed as a method for examining the involvement of mechanical and aerodynamic factors coupling the tree to the wind.