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本文用主次结构动态综合的观点来研究复杂结构的抑振设计问题。提出了一种简便实用的设计方法,它不需主结构的激励信息,可直接依据原结构的响应及少数点上的频响函数在现场实施。文中以吸振设计为例,简便地导出了一般结构局部及,全局完全消振的条件,讨论了宽频带响应的吸振问题。最后以计算机模拟及自由梁的抑振实验证实了文中结果。
This paper uses the viewpoint of dynamic synthesis of primary and secondary structures to study the vibration suppression design of complex structures. A simple and practical design method is proposed. It does not need the incentive information of the main structure and can be implemented in the field directly according to the response of the original structure and the frequency response function at a few points. In this paper, the vibration absorption design is taken as an example to simply derive the conditions for the partial and global vibration suppression of the general structure, and the vibration absorption problem of the broadband response is discussed. Finally, the results of the paper are verified by computer simulation and vibration suppression of free beams.