CAJ | 학술논문

　　针对某型救护直升机振动特点，采用金属干摩擦阻尼可调式隔振器对机载综合急救单元进行隔振优化设计，在隔振器干摩擦阻尼调节范围内，测试多组隔振器摩擦力曲线，应用谐波叠加法模拟直升机客舱底板激励，并通过仿真优化计算确定最佳摩擦力曲线，进而确定隔振器阻尼最佳工作状态。优化结果表明机载综合急救单元采用该型隔振器，能使加速度均方根响应降低78.75%，说明该隔振器具有良好的隔振减振性能，适用于直升机机载振动环境。
　　침대모형구호직승궤진동특점，채용금속간마찰조니가조식격진기대궤재종합급구단원진행격진우화설계，재격진기간마찰조니조절범위내，측시다조격진기마찰력곡선，응용해파첩가법모의직승궤객창저판격려，병통과방진우화계산학정최가마찰력곡선，진이학정격진기조니최가공작상태。우화결과표명궤재종합급구단원채용해형격진기，능사가속도균방근향응강저78.75%，설명해격진기구유량호적격진감진성능，괄용우직승궤궤재진동배경。
According to the vibration characteristics of an ambulance helicopter, the optimum design for vibration isolation of integrated airborne aid unit was done using the tunable metal dry-friction damping. Within the adjustment range of the isolator’s dry friction damping, curves of the friction force of the vibration isolator were obtained by testing, and the harmonic-wave superposition method was used to simulate the cabin-floor excitation of the helicopter. Meanwhile, the optimum curve of the friction force was made based on the optimization simulation, and then the best working condition of the isolator damping was determined. Results of the optimization show that the RMS of the acceleration can be reduced by 78.755 % with the use of the isolator in the airborne aid unit, the isolator has a good vibration isolation damping performance and is suitable for the airborne vibration environment of the helicopter.