Measurements of the Shear Modulus of Materials by the Free-Plate Torsional Mode Shape Method

• DOI: 10.1520/jte20160471
• Publication Date: 2018-05-12T05:18:07Z
• Authors: Zheng Wang; Yunlu Wang; Yu Cao; Zizhen Gao
• Keywords: Shear modulus; Mode (computer interface)

Abstract In this work, according to the first-order torsional mode shape function computed by ANSYS software and optimization principle, relationship between shear modulus of materials frequency free plate was established in terms energy method. Mode coefficients orthotropic (lumbers Sitka spruce, Scots pine, Beech, et al.) isotropic (steel, aluminum, glass) were calculated. The correlation lumbers tangential, radial, cross sections length-width width-thickness ratios obtained. Also, ratio achieved. correctness these correlations verified mathematical simulation, dynamic testing, static testing for modulus. transient excitation method can be used measure spectrum plates. With aid cross-power based on spectrum, directly identified. free-plate proposed work is applicable not only such as steel but also three main (GTL, GLR, GRT) lumber.