A SIMPLIFIED METHOD FOR USING FREE VIBRATION OF THE THREE PARAMETER STANDARD SOLID RHEOLOGICAL MODEL FOR ANALYSIS OF GRAFT UNIONS IN APPLE TREES

摘要

An analysis of free vibration of a beam is made to measure, using Hooke and Maxwell elements in parallel, properties of wood specimens taken from grafted apple trees. A graphical procedure is given for determining the model constants and a special case of nonlinear damping is discussed.