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前言振动试验是现代工程技术中一项基本试验手段。在国民经济的许多领域都有不少问题需要通过振动试验加以解决,如各种产品(电子器件、仪器仪表等)在使用和运输条件下的耐振情况,车辆船舶在运行条件下的颠簸振动情况,桥梁、水坝及高层建筑在地震影响下的耐震情况都要通过振动试验来查明。国防工业领域对振动试验更加需要,高速飞机、导弹和航天飞行器的振动问题十分复杂,据介绍,导弹和航空涡轮发动机的全
Introduction Vibration test is a basic test method in modern engineering. In many areas of the national economy, many problems need to be solved by vibration tests such as the vibration resistance of various products (electronic devices, instrumentation, etc.) under the conditions of use and transportation, the vibration and vibration of the vehicle’s ships under the operating conditions The seismic behavior of bridges, dams and high-rise buildings under the influence of earthquakes must be verified by vibration tests. Vibration tests are even more needed in the defense industry. The vibration problems of high-speed aircraft, missiles and space vehicles are very complicated. According to reports, the entire missile and aeronautical turbine engines