In this paper, MDF specimens with homogeneous material was studied according to the dynamic testing theory, to explore the free and cantilever constraint conditions, and analysis of value with the ratio of length to width variation of MDF elastic modulus and shear modulus were compared.According to the modal strain and strain analysis of the cantilever plate of the isotropic material, ANSYS is used to determine the position of the strain gauge in the dynamic test MDF Poisson′s ratio by σy=0, and the MDF Poisson′s ratio was measured dynamically.In order to ensure the feasibility of dynamic testing of the Poisson′s ratio of MDF, the allowable variation range of the position of the strain gauge by σy=0 was also tested.Finally, the static shear modulus of MDF was measured by the square plate torsion test to verify the applicability of the dynamic shear modulus method.The categorical attribute of MDF material was analyzed, and the MDF was regarded as quasi-isotropic material.
medium density fiberboardelastic modulusshear modulusPoisson′s ratiodamping ratiodynamic test
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