一前言通常,结构的振动试验,根据其目的可分为下面两大类。一种是为了得到结构动特性而进行的模态试验,另一种是确定结构对环境条件的适应性能的模拟试验。本文拟以航空与宇航结构为中心,对模态试验方法评述如下。所谓模态试验,就是以求出部件的固有频率、 A preface Usually, structural vibration tests, according to their purpose, can be divided into the following two broad categories. One is the modal test to obtain the structural dynamic characteristics and the other is the simulation test to determine the structural adaptability to environmental conditions. This article intends to aerospace and aerospace structure as the center, the modal test method is as follows. The so-called modal test, is to find the natural frequency components,