前言随着科学技术的发展,绝大部份的机械工程,特别是航空和宇航飞行器,都必需进行振动和声环境试验,以考核结构强度,研究金属疲劳,器件和仪表失效,生物效应和声致损伤等一系列问题。由于上述效应是由振动应力产生的,因此过去的研究都是在低频振动条件下进行的,但是从环境输出线路,它不完全是 Preface With the development of science and technology, the vast majority of mechanical engineering, especially aerospace and aerospace vehicles, must carry out vibration and acoustic environment tests to assess structural strength, study metal fatigue, device and instrument failure, biological effects and sound Caused a series of problems such as injury. Since the above effects are caused by the vibration stress, the past research has been carried out under low-frequency vibration conditions, but it is not completely