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在解决复杂结构的振动问题方面,从六十年代开始兴起了两个很有效的方法——模态综合法和机械阻抗法,随着电子计算机的发展和广泛应用,这两个方法都有着良好的发展前途。这两个方法虽然在本质是相同的,都是综合子结构的动态特性而得到组合结构的动态特性的。但是过去这两种方法一直是平行地发展着的,两者之间没有更多的联系。原因是机械阻抗法一般是以实验为基础的,子结构的动态特性是用它的动柔度(或动刚度)来表示的,也就是用子结构的机械导纳(或机械阻抗)来表示的,而整个结构
In solving the vibration problem of complex structures, two very effective methods, modal synthesis method and mechanical impedance method, have emerged since the 1960s. Both of these methods have been well developed with the development and widespread use of electronic computers The development of the future. Although these two methods are essentially the same in nature, they are the dynamic characteristics of the composite substructure and the dynamic characteristics of the composite structure are obtained. But in the past these two approaches have been developing in parallel, with no more connection between the two. The reason is that the mechanical impedance method is generally based on experimentation and the dynamic behavior of the substructure is expressed by its dynamic flexibility (or dynamic stiffness), that is, by the mechanical admittance (or mechanical impedance) of the substructure The whole structure