一种拉力传感器弹性体的结构设计与有限元分析

Structural design and finite element analysis of a tension sensor elastomer

为提高力传感器标定系统测试精度,设计了一种拉力传感器的弹性体,并对其性能进行分析。首先,根据锤链圆膜片式弹性体结构特点建立弹性体的力学模型,求解出弹性体基本结构参数。其次,利用有限元法,建立了弹性体有限元分析模型,优化了弹性体膜片厚度参数,分析了满载和安全过载时弹性体力学特性,计算了弹性体的前6阶本征频率。最后,通过样机试验证明了弹性体结构设计的合理性,为进一步提高力传感器标定系统精度奠定了基础。

In order to improve the test accuracy of force sensor calibration systems,this paper designs a tension sensor elastomer and analyzes the properties.Firstly,it establishes a mechanical model of the elastomer according for the structural characteristics of the hammer chain circular diaphragm elastomer,and calculates the basic structural parameters of the elastomer.Secondly,it establishes a finite element analysis model of the elastomer by using the finite element method,optimizes the thickness parameters of the elastomer,analyzes the mechanical properties of the elastomer under full load and safe overload,and calculates the first six eigenfrequency of the elastomer.Finally,the results of prototype test prove the designing rationality of elastomer structure that lays foundation for further improving the accuracy of the force sensor calibration system.