组合扑翼张合过程模拟及其惯性力分析  

Simulation of Opening and Closing of Modular Hinge-Type Wings and Analysis of Their Inertia Force

作　　者：高飞[1] 吕建刚[1] 张仲志 郭劭琰[1] 

机构地区：[1]军械工程学院车辆与电气工程系,河北石家庄050003

出　　处：《军械工程学院学报》2016年第3期58-63,共6页Journal of Ordnance Engineering College

摘　　要：针对研究扑翼的叶片在张开和闭合过程中惯性力的变化规律,首先,通过求解三维Navier-Stokes方程获得了扑翼在改变运动方向时的转动力矩;其次,根据扑翼在转动过程的动力学模型模拟了叶片的张开和闭合过程;最后,在前面的基础上对扑翼在水平和竖直方向的惯性力进行了计算,分析了不同往复速度条件下惯性力随时间的变化规律.结果表明扑翼张开和闭合过程在整个直线往复运动中所占时间较小,但是叶片在转动过程中产生的惯性力是不容忽视的,扑翼试验中产生的上下抖动现象即为该惯性力引起的.研究结果为减小和消除组合扑翼在直线往复运动中产生的振动与冲击提供了参考.The modular hinge-type wings will open or close when the direction of motion is changed.To study how inertia force varies in the course,three-dimensional Navier-Stokes equations are solved to acquire the turning torques of the flapping wings.The opening and closing of the blades are simulated according to the dynamical model of the hinge-type wings.On this basis the inertia force of the hinge-type wings in vertical and horizontal directions are calculated,and the law of inertia force changing with time and the relevant impact of reciprocal speed are analyzed. The phenomenon of wings vibrating in vertical direction during the reciprocating motion is caused by this inertia force.These findings can provide some theoretical guidance on optimizing the structural design and eliminating vibration and impact phenomena.

关 键 词：扑翼飞行 推进技术 转动 惯性力 数值计算 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程]