A New Static Strain Measurement Method of Young's Modulus Based on the Theory of the Finite Element

被引：0
|
作者：
Liu Xiao-bao [1 ]
Li Xin [1 ]
Zhang Hai-feng [1 ]
机构：
[1] Kunming Univ Sci & Technol, Inst Mech & Elect Engn, Kunming 650500, Yunnan, Peoples R China
来源：
2017 9TH INTERNATIONAL CONFERENCE ON MODELLING, IDENTIFICATION AND CONTROL (ICMIC 2017) | 2017年
关键词：
Finite Element; Young's modulus; Stiffness matrix; Strain;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Measurement methods of Young's modulus about static state by beam bending, there are some issues such as having low precision, the range of application is limited, required the special equipment and specimen. Therefore, this paper presents a new strain Measurement Method of Young's modulus about static state based on the theory of Finite Element. Firstly, by studying the relationship among the load, strain, and the stiffness matrix in Finite Element, to establish a relationship between strain and the Young's modulus. Secondly, the paper analyzes the sources of error, and the impact of the raw measurement error and finite element calculation error on its results. Finally, the paper's result is verified by concrete examples, and it's been proved that this method doesn't require special equipments and specimens, with high testing accuracy, besides, it is widely applied to engineering practice.
引用
收藏
页码：516 / 520
页数：5
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