噪声与振动控制
譟聲與振動控製
조성여진동공제
NOISE AND VIBRATION CONTROL
2013年
5期
53-57
,共5页
齐书浩%刘素娟%张文明%肖心想
齊書浩%劉素娟%張文明%肖心想
제서호%류소연%장문명%초심상
振动与波%四旋翼飞行器%低雷诺数%流固耦合%N-S方程%模态分析
振動與波%四鏇翼飛行器%低雷諾數%流固耦閤%N-S方程%模態分析
진동여파%사선익비행기%저뢰낙수%류고우합%N-S방정%모태분석
vibration and wave%quad-rotor helicopter%low Reynolds number%fluid-solid coupling%N-S equation%modal analysis
基于有限元方法研究低雷诺数下微型四旋翼飞行器的气动特性和振动特性。建立微型四旋翼飞行器悬飞时的三维流场物理模型，给出边界条件，采用有限体积法对多个边界条件进行数值计算和分析，研究微型四旋翼飞行器在悬飞过程中的流场分布，揭示微型四旋翼飞行器的气动特性变化规律；此外，将气动载荷加载到结构分析模块，研究机身应力分布情况和流固耦合特性，得到机身最大应力所在位置及其振动特性。
基于有限元方法研究低雷諾數下微型四鏇翼飛行器的氣動特性和振動特性。建立微型四鏇翼飛行器懸飛時的三維流場物理模型，給齣邊界條件，採用有限體積法對多箇邊界條件進行數值計算和分析，研究微型四鏇翼飛行器在懸飛過程中的流場分佈，揭示微型四鏇翼飛行器的氣動特性變化規律；此外，將氣動載荷加載到結構分析模塊，研究機身應力分佈情況和流固耦閤特性，得到機身最大應力所在位置及其振動特性。
기우유한원방법연구저뢰낙수하미형사선익비행기적기동특성화진동특성。건립미형사선익비행기현비시적삼유류장물리모형，급출변계조건，채용유한체적법대다개변계조건진행수치계산화분석，연구미형사선익비행기재현비과정중적류장분포，게시미형사선익비행기적기동특성변화규률；차외，장기동재하가재도결구분석모괴，연구궤신응력분포정황화류고우합특성，득도궤신최대응력소재위치급기진동특성。
Aerodynamic and vibration characteristics of a micro quad-rotor helicopter were studied based on finite element method. A three dimensional physical model of the flow field was established. By adding boundary conditions, the flow field was analyzed numerically using the finite volume method and its aerodynamic characteristics were obtained. Then the aerodynamic force was loaded to the helicopter structure to get the stress distribution and find out where the maximum stress occurs. Finally, the first six vibration modes and their vibration characteristics were obtained after the modal analysis of the micro quad-rotor helicopter.
