文献类型：期刊文献

中文题名：苎麻茎秆的力学性能研究

英文题名：Research on mechanical properties of ramie stalk

作者：徐鑫[1,2] 郭克君[1,2] 谭新建[3] 张殿松[3] 苗振坤[1] 司芳芳[3]

第一作者：徐鑫

机构：[1]国家林业局哈尔滨林业机械研究所;[2]中国林业科学研究院研究生院;[3]中国林业科学研究院亚热带林业实验中心

年份：2018

卷号：44

期号：4

起止页码：447-452

中文期刊名：湖南农业大学学报：自然科学版

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；

基金：中央级公益性科研院所基本科研业务费专项(CAFYBB2017ZC007)

语种：中文

中文关键词：苎麻;茎秆;本构方程;力学特征

外文关键词：ramie;stalk;constitutive equation;mechanical properties

分类号：S563.1

摘要：对成熟苎麻茎秆进行横观各向同性假设,参照塑料拉伸、压缩和金属扭转试验以及夹层结构弯曲性能试验的要求和标准,分别对苎麻茎秆、木质部进行拉伸、压缩、弯曲和扭转试验,对韧皮层进行拉伸、压缩试验,测定苎麻茎秆的基本力学参数。结果表明:苎麻茎秆拉伸弹性模量为1 013.19 MPa,压缩弹性模量为14.63 MPa,剪切模量为87.15 MPa,同性面泊松比为0.38,异性面泊松比小于0.016 6;木质部拉伸弹性模量为1 021.85 MPa,压缩弹性模量为16.99 MPa,剪切模量为99.05 MPa,同性面泊松比为0.33,异性面泊松比小于0.020 5;韧皮纤维层拉伸弹性模量为2 004.18 MPa,压缩弹性模量为4.01 MPa,剪切模量为38.76 MPa,同性面泊松比为0.58,异性面泊松比小于0.001 9。
Based on the transversely isotropic hypothesis, the ramie stalk and xylem were stretched, compressed, bent and twisted and the fiber layer was stretched and compressed to determine the basic mechanical parameters of ramie according to the requirements and standards of plastic tensile, compression and metal torsion tests and the bending performance test of sandwich structure. The results showed that the tensile elastic modulus of ramie stalk is 1 013.19 MPa, the compression modulus is 14.63 MPa, the shear modulus was 87.15 MPa, the poisson ratio of opposite surface is 0.38 and the poisson ratio of isotropic surface is less than 0.016 6. For the xylem, the tensile elastic modulus is 1 021.85 MPa, the compression modulus is 16.99 MPa, the shear modulus was 99.05 MPa, the poisson ratio of opposite surface is 0.33 and the poisson ratio of isotropic surface is less than 0.020 5. For the fiber layer, the tensile elastic modulus is 2 004.18 MPa, the compression modulus is 4.01 MPa, the shear modulus is 38.76 MPa, the poisson ratio of opposite surface is 0.58 and the poisson ratio of isotropic surface is less than 0.001 9.