【摘要】 对农用无人机气流扰动翼进行动力学分析,针对气流扰动翼疲劳寿命难以估计这一问题,利用UG三维软件建立了气流扰动翼有限元模型,并利用ANSYS Fluent流体模块设置了大气湍流模型参数,得到了气流扰动翼表面的力分布数据。农用无人机气流扰动翼疲劳有限元仿真结果为:疲劳危险点在气流扰动翼与机体连接处以及起飞和降落中,气流扰动翼最小的疲劳寿命分别为1.226E9和3.562E9次循环。更多还原

【Abstract】 Based on the dynamic analysis of the air flow disturbance wing of the agricultural UAV, aiming at the problem that it is difficult to estimate the fatigue life of the air flow disturbance wing, it establishes the finite element model of the air flow disturbance wing by using the UG three-dimensional software, and sets the parameters of the air turbulence model by using the fluent fluid module of ANSYS, which can obtain the force distribution data of the air flow disturbance wing surface. The fatigue finite element simulation results of the air flow disturbance wing of the agricultural UAV show that the minimum fatigue life of the air flow disturbance wing is 1.226 E9 and 3.562 E9 cycles respectively at the joint of the air flow disturbance wing and the airframe, as well as during taking off and landing.更多还原