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基于空间框架结构的行波动力学模型， 给出获取结构模态参数的一个新方法。将由一维波导组装成的框架结构的振动作为弹性波研究， 弹性波在波导上传播， 在结点处反射和散射。结构的模态特性在结构呈自由振动状态时得以体现， 据此建立一个关于结构内行波的特征值问题， 并由此求得结构的固有频率及振型。文中还给出了与有限元方法结果的比较
Based on the traveling wave dynamics model of the space frame structure, a new method for obtaining the modal parameters of the structure is given. The vibration of a frame structure assembled by a one-dimensional waveguide is studied as an elastic wave. The elastic wave propagates on the waveguide and is reflected and scattered at the junction. The modal characteristics of the structure are reflected when the structure is in a free vibration state. Based on this, a eigenvalue problem about the traveling wave in the structure is established, and the natural frequency and mode shape of the structure are obtained. The paper also gives a comparison with the results of finite element method