基于伪刚体模型的柔顺簧片性能分析

Performance Analysis of Compliant Spring based on Pseudo Rigid Body Model

柔顺簧片的性能对微动机构运动精度具有较大影响,因其具有非线性、大变形等特点,根据Bernoulli-Euler方程,结合伪刚体模型,建立柔性簧片力学特性分析模型。研究载荷、位移,曲率等与柔顺簧片几何参数之间的关系,并求得系统的力学方程。最后通过算例分析柔顺簧片在精密导向机构中的应用,其为精密微动装置的设计提供一定的理论依据。

The precision of micromanipulator is affected by the performance compliant spring.With consideration of nonlinearity and large deformation,the mechanics analysis model of compliant spring is built based on principle of Bernoulli-Euler equation and pseudo rigid body model is proposed.The relationships among property of load,displacement,curvature etc and geometrical parameter are studied and the mechanics equation is obtained.Finally,the validity of this model is verified by experiments.This research has reference value on design of precision micromanipulator.