Deform-X柔性铰链设计与分析

设计了一种Deform-X柔性铰链,利用微积分的思想分析了其等效刚度,推导了Deform-X柔性铰链弯扭耦合等效刚度的理论计算公式。通过一组实例的理论分析和ABAQUS仿真分析,验证了Deform-X柔性铰链等效刚度理论计算公式的正确性。选取外形尺寸相同的X型柔性铰链与Deform-X柔性铰链进行了性能比较分析,在相同转矩作用下,Deform-X柔性铰链弯曲变形转角约为X型柔性铰链的3倍。分别对X型柔性铰链和Deform-X柔性铰链进行了弯曲失效分析,结果表明Deform-X柔性铰链的可使用范围大于X型柔性铰链。设计了基于Deform-X柔性铰链的平面折展四杆机构的实物模型,通过实物测试和仿真分析表明Deform-X柔性铰链能够实现预期变形。最后,对尺寸相同的基于X型柔性铰链的四杆机构和基于Deform-X柔性铰链的四杆机构在相同力矩作用下的变形进行了分析,结果表明基于Deform-X柔性铰链的四杆机构变形更大。

Design and Analysis of Deform-X Flexure Hinge

Deform-X flexure hinge was designed, and its equivalent stiffness was analyzed by using differential methods, and the theoretical calculation formula of the equivalent stiffness of Deform-X flexure hinge was derived. Through theoretical analysis and ABAQUS simulation analysis of Deform-X flexure hinge in a size, the correctness of calculation formula of the equivalent stiffness of Deform-X flexure hinge was verified. By comparing the performance of X-shaped flexure hinge with the same shape and size as the Deform-X flexure hinge, the bending deflection angle of the Deform-X flexure hinge was about three times of that of the X-shaped flexible hinge under the same torque. Bending failure analysis of X-shaped flexure hinge and Deform-X flexure hinge was carried out, and the results showed that the available using range of Deform-X flexure hinge was wider than that of X-shaped flexure hinge. The four-bar mechanism model based on Deform-X flexure hinge was manufactured. The test and simulation analysis showed that the Deform-X flexure hinge can realize the expected deformation. In addition, the four-bar mechanism model based on X-shaped flexure hinge was established in ABAQUS. Through the comparative simulation analysis, in the case of the same size, the bend deformation performance of four-bar mechanism based on Deform-X flexure hinge was better than that of four-bar mechanism based on X-shaped flexure hinge.