Abstract
ABSTRACT DYNAMIC displacements of a commercial trunk shaker and the trunks of three sizes of '^Montmorency' cherry trees were simultaneously measured at shaking frequencies of 9 Hz and 16 Hz. Free shake displacement (no tree in the clamp) was also measured. Start-up and shut-down transients created displacements 2.5 times greater than displacements at steady-state. Relative amplitude difference between shaker and trunk position ranged from 3 to 8 mm for young trees; these displacements must be absorbed in the clamp system or the tree bark. Combined with corresponding acceleration values in a second-order, single-of-freedom vibration model, the transient relative displacements indicated stress values on the bark of young trees which may exceed tolerable limits.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.