17、 FEA model is shown in Figure 2(b). The FEA model and the output displacement have been obtained with changing elliptical flexible hinges paramters E,b,t and as well as (a)(b)Figure 2 . FEA model of elliptical flexure hingeThe theoretical calculation and FEA rotational stiffness are obtaoned through 。

18、 changing elliptical flexure hinges parameters E,b,t and as well as , as shown in Figure 3 to 7.Figure 3. Comparison of FEA value and the theoretical value of flexure hinge with changing EFigure 3. Comparison of FEA value and the theoretical value of flexure hinge with changing width bFigure 5. Comp 。

19、arison of FEA value and the theoretical value of flexure hinge with chinging thickness tFigure 6. Comparison of FEA value and the theoretical value of flexure hinge with chinging semimajor axis Figure 7. Comparison of FEA value and the theoretical value of flexure hinge with chinging semimajor axis。

20、From Equation (3) and Figures 3 to 7 the following conclusions can be observed.(1) From Figures 3and 4 it can be observed that the rotation stiffness is a linearly increasing realtion with material youngs modulus E and width b. The FEA value is bigger than the theoretical value. When E and b are sma 。

21、llerm the FEA value and the theoretical value are closer .(2) From Figure 5 it can observed that the rotantion of the stiffness FEA value and the theoretical value is a vurve increasing with thickness t, end the speed-up is getting quicker and quicker. When t is bigger, the difference of the theoret 。

22、ical value and the FEA value is bigger. When t3mm, the FEA value and the theoretical value are closer.(4) From Figure 7 it can observed that the rotantion of rotation ridity and semiminor axis is a linearly increasing, but the increasing scope is small. The FEA value is bigger than the theoretical v 。

23、alue.From Figure 3 to 7 it can observed that the influence of flexure hinges parameter to its rotation stiffness is:the influence of thickness t is biggest, followed by semimajor axis , semimajor axis width b and E.The theoretical value and the FEA value of an elliptical flexible hinge rotation rigi 。

24、dity is not equal, even if has a big differential value. The reasons are:(1) The flexible hinge theoretical model that is eastablished using materials mechanics bending strain theory is built on the basis of certain assumptions.From Figure 2(b) it can be observed that the FEA model not only has the。

25、displancement in the y axis direction, but also has the displacement change on the z axis direcrion, when the torque exerted on the z axis for the model. In other words, the flexible hinge not only has the bending strain,but also will have the shearing force to cause upward deformation. Under certai 。

26、n design parameters, the flexible hinges theory and FEA solution achieve a good match.CONCLUSIONSThe different design parameters to the flexible hinge rotation rigidity influence and the linear relationship are obtained by comparing the rotation rigidity theory solution stiffness is:the influence of 。

27、 thickness is biggest,followed by semimajor axis R,width b and E. The teasons that the theoretical value and the FEA value of an elliptical fexible hinge not only has the bending strain,but also will have the shearing force to cause upward deformation. It is helpful to further analyze the movement o 。

28、f the mechanical deformation mechanism, using the finite element technology to simulate the flexible hinge performance.圆弧型柔性铰链刚度特性分析摘 要： 柔性铰链是目前被广泛用于微动机器人的主要部件之一 ， 其刚度性能直接影响微动机器人的终端定位 。
由于实际需要的多样性和复杂性 ， 使得其实际结构的几何尺寸不能完全满足传统理论分析的假设条件 ， 因此影响到对其性能的准确分析 。
利用有限元软件ANSYS对双边圆弧形柔性铰链和单边圆弧形柔性铰链在不同结构参数下的转动刚度进行分析 ， 并与其解析计算 。

29、结果进行了比较 ， 分析了其间产生误差的原因 。
为MEMS中柔性铰链的设计与应用提供一定的依据 。
关键词: 双边圆弧形柔性铰链 ， 单边圆弧形柔性铰链 ， 有限元分析 ， 刚度引言随着微机电系统（MEMS）技术的迅速发展 ， 柔性铰链因具有体积小、无机械摩擦、无间隙、刚性好和高灵敏度的特点 ， 柔性铰链被广泛地应用于各种要求小角位移、高精度转动的场合 ， 如陀螺仪、加速度计、精密天平等仪器仪表 。
柔性铰链在微米级领域内有着广阔的应用前景 。
常见的柔性铰链有两种：直梁形柔性铰链和圆弧形柔性铰链 。
直梁形柔性铰链有较大的转动范围 ， 但运动精度较差；而圆弧形柔性铰链的运动精度较高 ， 但转动范围相对小 。
为了兼顾运动精度和运动范围 ， 又衍生出下面 。

稿源：(未知)

【傻大方】网址：/a/2021/0819/0023818500.html

标题：材料|材料 外文翻译 外文文献 英文文献 圆弧型柔性铰链刚度特性分析( 二 )