湖南农业大学学报（自然科学版）2018，Vol.44Issue(2)：210-215,6.DOI:10.13331/j.cnki.jhau.2018.02.018
基于修剪机械设计的龙眼树枝力学特性试验
Experiment of mechanical properties of longan branch for pruning machine design
摘要
Abstract
In order to obtain mechanical property parameters of Longan branch, compressing, tensile and shear test of Longan branch during pruning period were conducted in the accurate electronic universal testing machine. The results showed that compressive strength parallel to grain of Longan branch ranged from 18.33 to 27.77 MPa and mean value was 23.68 MPa, and compressive modulus of elasticity ranged from 351.51 to 835.85 MPa and average value was 547.20 MPa. It was showed that an exponential function positive correlation between the stress resistance intensity and compression energy. Tensile strength parallel to the grain of Longan branch was in the range of 40.26–70.28 MPa and average value was 52.12 MPa. Shear strength of Longan branch ranged from 9.05 to 13.42 MPa and mean value was 11.44 MPa. There was a significantly positive linear correlation between maximum shearing force and the cross–sectional area, and significantly positive power function correlation between shear energy and cross–sectional area.关键词
龙眼树枝/压缩/拉伸/剪切/力学特性Key words
Longan branch/compressive test/tensile test/shearing/mechanical properties分类
农业科技引用本文复制引用
吴良军,杨洲,李怀俊,伍文艳..基于修剪机械设计的龙眼树枝力学特性试验[J].湖南农业大学学报（自然科学版）,2018,44(2):210-215,6.基金项目
广东省现代农业产业共性技术创新团队建设项目(2017LM2153) （2017LM2153）
广州市科技计划项目(2014J4100147) （2014J4100147）
广东交通职业技术学院博士启动基金项目(2014AK18Y14054) （2014AK18Y14054）
