The invention relates to a real-time deformation measurement method for an elastic wing wind tunnel aeroelasticity test, and the method comprises the following steps: S1, carrying out the ground vibration test of a to-be-measured elastic wing model, and obtaining the front N-order modal frequency and displacement modal shape of the to-be-measured elastic wing model; s2, the elastic wing finite element simplified model is adopted to calculate the modal frequency and the displacement modal shape of the first N orders, so that the elastic wing finite element simplified model meets the conditions for simulating the ground test in the step S1; s3, adopting the corrected finite element simplified model to calculate the front N-order modal frequency and the strain modal shape of the elastic wing; s4, measuring points are arranged on the elastic wing model, the dependent variable of each measuring point is measured in real time, a wind tunnel test is carried out on the elastic wing model, and the strain time domain response of each measuring point is obtained; s5, calculating to obtain modal generalized coordinates of each order in the wind tunnel test of the elastic wing model; and S6, adopting a modal superposition method to obtain real-time deformation of each measuring point in the elastic wing wind tunnel test process.
本发明涉及一种弹性机翼风洞气动弹性试验实时变形测量方法,该方法步骤如下:S1、对待测弹性机翼模型进行地面振动试验,获得待测弹性机翼模型前N阶模态频率与位移模态振型;S2、采用弹性机翼有限元简化模型计算前N阶模态频率和位移模态振型,使得弹性机翼有限元简化模型满足模拟步骤S1地面试验的条件;S3、采用修正后的有限元简化模型,计算弹性机翼前N阶模态频率与应变模态振型;S4、在弹性机翼模型上布置测点,并对各个测点应变量进行实时测量,对弹性机翼模型进行风洞试验,得到各个测点的应变时域响应;S5、计算得到弹性机翼模型风洞试验中各阶模态广义坐标;S6、采用模态叠加法得到弹性机翼风洞试验过程中各个测点的实时变形。
Real-time deformation measurement method for wind tunnel aeroelasticity test of elastic wing
一种弹性机翼风洞气动弹性试验实时变形测量方法
2023-04-18
Patent
Electronic Resource
Chinese
IPC: | G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung |
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