CAJ | 학술논문

建立直升机旋翼液弹阻尼器非线性动力学参数模型，引入具有全局搜索能力的遗传算法进行模型参数识别，解决因模型复杂造成的传统参数识别效率及精度较低问题。据识别所得参数模型重构力—位移迟滞回线并与液弹阻尼器动力学试验数据对比结果显示，参数模型重构曲线与试验曲线吻合良好，验证参数模型描述液弹阻尼器非线性动力学特性的准确性及采用遗传算法识别模型参数的有效性。对不同位移幅值与不同频率下液弹阻尼器动力学特性模拟计算均获得与试验一致结果，表明非线性参数模型及参数识别方法鲁棒良好性、精度较高。
건립직승궤선익액탄조니기비선성동역학삼수모형，인입구유전국수색능력적유전산법진행모형삼수식별，해결인모형복잡조성적전통삼수식별효솔급정도교저문제。거식별소득삼수모형중구력—위이지체회선병여액탄조니기동역학시험수거대비결과현시，삼수모형중구곡선여시험곡선문합량호，험증삼수모형묘술액탄조니기비선성동역학특성적준학성급채용유전산법식별모형삼수적유효성。대불동위이폭치여불동빈솔하액탄조니기동역학특성모의계산균획득여시험일치결과，표명비선성삼수모형급삼수식별방법로봉량호성、정도교고。
A nonlinear dynamic parametric model for a fluid-elastomeric damper of helicopter rotor was established. Genetic algorithm having a global search capability was introduced to identify the model parameters.It could solve the problem of lower efficiency and precision of conventional methods in parametric identification for complex models.The force-displacement hysteresis loops reconstructed with the identified parametric model were compared with those derived from test data.Both of them agreed well each other.The results showed that the identified nonlinear parametric model can validly describe the dynamic properties of a fluid-elastomeric damper and the genetic algorithm can effectively identify parameters of the nonlinear fluid-elastomeric damper model;under different displacement amplitudes and frequencies,the dynamic characteristic calculation results of the fluid-elastomeric damper always agree well with test data,so the proposed nonlinear parametric model and the parametric identification method both possess a good robustness and a higher precision.