非接触式激光测振技术在飞机襟翼蒙皮局部模态分析中的应用

Application of Non-contact Laser Vibration Measurement Technology in Local Modal Analysis of Aircraft Flap Skin

本文利用非接触式激光测振仪对某型飞机襟翼蒙皮的局部模态进行了试验研究,有效获得了襟翼蒙皮结构的局部模态参数,并与有限元仿真结果进行了对比验证。结果表明,相较传统测试手段,非接触激光测振技术用于襟翼蒙皮局部结构的模态分析是高效、可行的,对襟翼蒙皮局部结构的固有特性分析具有指导意义,同时也对襟翼蒙皮局部结构的有限元模型修正提供了基础。

In this paper,the local modes of flap skin of a certain aircraft was experimentally studied by non-contact laser vibration measurement equipment,and the local modal parameters of flap skin structure were effectively obtained and verified by comparison with the finite element simulation results.The results show that compared with the traditional test method,the non-contact laser vibration measurement technique is efficient and feasible for the modal analysis of the local flap skin structure,which is of guiding significance for the analysis of the inherent characteristics of the local flap skin structure,and also provides a basis for the finite element model modification of the local flap skin structure.