并联柔性机构失谐动态响应分析方法

Mistuned Dynamic Response Analysis Method of Parallel Flexible Mechanism

为了探索周期机构在失谐时的非线性动态响应,尤其是柔性机构在失谐情况下高度非线性的运动学和动力学参数动态响应,提出了基于Monte Carlo方法的柔性周期机构失谐动态响应分析方法,以并联机构为例对多种失谐情况进行了动态响应对比分析,初步探讨了失谐量与失谐动态响应变化的规律。结果表明,周期机构普遍存在失谐现象,失谐动态响应与失谐量之间为非线性关系,存在动态响应局部化现象。

The aim of the research is to study nonlinear dynamic responses of periodic mechanism in case of mistuned status. Especially for the highly nonlinear kinetic and dynamic parameters responses of flexible mechanism when mistuned. Based on Monte Carlo method, a basic method of mistuned dynamic responses analysis on flexible periodic mechanism were provided. A Parallel mechanism was taken as an example for dynamic response contrastive analysis in multiple mistuned case. Preliminary discussion on the variation rule of detuning and mistuned dynamic response was given. The results showed that mistuned dynamic responses were common in periodic mechanism. The relationship between detuning and dynamic response were nonlinear. Localization phenomenon of dynamic response was exist in periodic mechanism.