湖南农业大学学报（自然科学版）2011，Vol.37Issue(3)：329-332,4.DOI:10.3724/SP.J.1238.2011.00329
苎麻成熟期底部茎秆的机械物理特性参数研究
Study of mechanical property parameters of ramie bottom stalk in harvesting period
摘要
Abstract
In order to provide parameters of mechanical properties for designing Ramie cutter and for analyzing of kinetics of shearing process, this paper investigated the mechanical properties of the ramie bottom stalk in harvesting period. Bending and twisting tests showed bend shear modulus were 155.7 MPa and 252.9 MPa and shearing modulus were 42.1 MPa and 44.8 MPa for stem and xylem respectively. The tensile elastic modulus were 1 876 MPa and 481 MPa and the compression modulus were 154.2 MPa and 50.9 MPa for Xylem and elongated layer respectively according to stretching and compression test. Then micro mechanics research methods of composite materials was applied to the stalk and determined the following parameters: the tensile elastic modulus, compression modulus of elasticity, PRXY and NUXY was 1 552 MPa, 102.4 MPa, 0.22, less than 0.099 for the stem respectively; and for the xylem, PRXY was 0.72 and NUXY less than 0.068; bend shear modulus, shear modulus, PRXY and NUXY of elongated layer was 72.3 MPa and 24.2 MPa, 0.05 and less than 0.335 respectively.关键词
苎麻/底部茎秆/力学特性/弹性参数Key words
ramie/ bottom stalk/ mechanical properties/ elasticity parameter分类
农业科技引用本文复制引用
刘兆朋,谢方平,吴明亮,魏宵,刘剑锋..苎麻成熟期底部茎秆的机械物理特性参数研究[J].湖南农业大学学报（自然科学版）,2011,37(3):329-332,4.基金项目
湖南省研究生科研创新项目(CX2010B283) （CX2010B283）
