中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 小麦茎秆力学性能与微观结构研究 农业机械学报 2009,40 (5) 98-101
Position: Home > Articles > Mechanical Properties and Micro-structure of Wheat Stems Transactions of the Chinese Society for Agricultural Machinery 2009,40 (5) 98-101

小麦茎秆力学性能与微观结构研究

作  者：
王芬娥;黄高宝;郭维俊;张锋伟;吴建民;赵多佳
单  位：
兰州工业高等专科学校机械工程系;甘肃农业大学工学院
关键词：
小麦;茎秆;力学性能;微观结构
摘  要：
测定了小麦成熟期茎秆的力学性能,研究了茎秆的应力-应变规律。试验观察了茎秆的微观组织结构,得到了茎秆扫描电镜下的解剖构造图像。分析了小麦茎秆承载能力与微观组织结构的相互关系,建立了茎秆横截面的力学模型。结果表明:小麦茎秆是一种典型的多相、筛状、不连续、不均匀和各向异性的复合材料,茎秆具有较高的强度和良好的弹性,其承载能力取决于机械组织的厚度、维管束的数量以及各组织及其细胞之间的连接形式和连接强度,小麦茎秆的抗拉强度为30.36~52.65 MPa,弹性模量为1.14~2.05 GPa。
译  名：
Mechanical Properties and Micro-structure of Wheat Stems
作  者：
Wang Fene1 Huang Gaobao1 Guo Weijun2 Zhang Fengwei1 Wu Jianmin1 Zhao Duojia1(1.College of Engineering,Gansu Agricultural University,Lanzhou 730070,China 2.Department of Mechanical Engineering,Lanzhou Polytechnical College,Lanzhou 730050,China)
关键词：
Wheat,Stem,Mechanical properties,Microstructure
摘  要：
The mechanical properties of wheat stems in mature were tested,and the curves on stress-strain of wheat stems were measured by the electronic testing machine CMT2502.The microstructure of wheat stems was observed,and the SEM images of transverse and longitudinal section of wheat stem were got by scanning electron microscopy.The relation between mechanical properties and microstructure of wheat stems was analyzed,and mechanical model of wheat stem was established.The results show that wheat stem is a typical porous,no-continuous, no-homogeneous and anisotropic composite material.Wheat stems have enough strength and good flexibility,and its carrying capacity depends on the thickness of thick-walled cells and the numbers of vascular bundles,as well as the connection form and strength of cells in stems.The strength and Young's modulus of wheat stems are 30.36～52.65 MPa and 1.14～2.05 GPa respectively.

相似文章

导出引用
计量
文章访问数: 14
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46