文献类型：期刊文献

英文题名：Moisture-dependent orthotropic elasticity and strength properties of Chinese fir wood

作者：Jiang, Jiali[1,2] Bachtiar, Erik Valentine[2] Lu, Jianxiong[1] Niemz, Peter[2]

第一作者：蒋佳荔;Jiang, Jiali

通信作者：Jiang, JL[1];Jiang, JL[2]|[a0005c4a974b7fbd344a8]蒋佳荔;

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[2]Swiss Fed Inst Technol, Inst Bldg Mat, CH-8093 Zurich, Switzerland

年份：2017

卷号：75

期号：6

起止页码：927-938

外文期刊名：EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS

收录：;EI(收录号：20171203488362);Scopus(收录号：2-s2.0-85015950550);WOS:【SCI-EXPANDED(收录号:WOS:000412757000008)】；

基金：This research was sponsored by the National Natural Science Foundation of China (No. 31570548). J.J. would like to gratefully acknowledge the financial support from the China Scholarship Council (CSC). Special thanks go to Franco Michel and Thomas Schnider for their help during specimen preparation and their expert assistance in conducting the measurements.

语种：英文

外文关键词：Anisotropy - Moisture - Tensile testing - Three dimensional computer graphics - Yield stress

摘要：Elastic and strength properties are very important material characteristics in mechanical modelling. Due to the anisotropic and hygroscopic nature of wood, a characterization of wood mechanical behavior will require knowledge of its moisture-dependent properties in relation to the three principal axes of anisotropy. The influence of moisture content (MC) on the elastic and strength anisotropy of Chinese fir (Cunninghamia lanceolata [Lamb.] Hook) wood was examined in the present study. Selected parameters, including the anisotropic Young's moduli, shear moduli, Poisson's ratios, yield and ultimate stress values in the longitudinal, radial and tangential directions, were determined in compression and tension tests at different moisture conditions. The results indicated that a distinct moisture dependency is exhibited for the elastic and strength behavior of Chinese fir wood. With the exception of some Poisson's ratios, all investigated elastic and strength parameters were shown to decrease with increasing MC, whereby individual moduli and strength values were affected by the MC to different degrees. The two- and three-dimensional representation of the compliance matrix and the two-dimensional visualization of a yield surface give a valuable overview on the moisture-dependent elastic and strength anisotropy of Chinese fir wood.