森林与环境学报2017，Vol.37Issue(3)：292-296,5.DOI:10.13324/j.cnki.jfcf.2017.03.007
中密度纤维板弹性常数及其阻尼比的动态测试
Dynamic testing of medium density fiberboard elastic constants and damping ratios
摘要
Abstract
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.关键词
中密度纤维板/弹性模量/剪切模量/泊松比/阻尼比/动态测试Key words
medium density fiberboard/elastic modulus/shear modulus/Poisson′s ratio/damping ratio/dynamic test分类
建筑与水利引用本文复制引用
曹瑜,王韵璐,王正,李敏敏..中密度纤维板弹性常数及其阻尼比的动态测试[J].森林与环境学报,2017,37(3):292-296,5.基金项目
2015-2017年江苏省高校优势学科建设工程项目(PAPD) （PAPD）
2016年南京林业大学大学生科技创新项目(DXSKC-201606) （DXSKC-201606）
2015年江苏省苏北科技专项(BN2015143). （BN2015143）
