青菜头物理力学特性研究

Study on Physical and Mechanical Properties of Tumorous Stem Mustard

通过田间试验和实验室测定,采用SPSS统计分析对收获期青菜头的物理特性进行分析,得到了青菜头主要物理特性指标值的变化区间和分布频率;应用HG-500数显推拉力计配套的软件,通过拉伸试验法对收获期青菜头的拔取力、抗拉强度以及根茎剪切力等力学特性进行测试和分析,得出了青菜头土壤自然状态下最大拔取力、茎叶的抗拉强度和根的抗剪强度等力学特性,为青菜头收获和加工机械系统的开发提供科学依据.

In order to provide a scientific guidance for the development of the harvester and the processing machine system for tumorous stem mustard（Brassica juncea var.tumida Tsen et Lee）,based on the data of field and lab measurements of the crop at harvest,the SPSS software was employed to analyze its physical properties.The variation range and distribution frequencies of the main physical property indexes were obtained.A tensile test was carried out to test the mechanical properties using the software of digital force gauge HG-500,and the maximum pulling force for the crop under natural soil conditions,the tensile strength of the stem and the leaves and the cut force of the root were obtained simultaneously.