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引言1978年6月,为确定一座海上采油平台的动力反应特性,首次使用了大型机械激振装置。以往,对这种结构的动力反应特性的认识,是通过分析结构对风和海浪的加速度反应而得到的。风和海浪本质上是一种未知的随机激振力。使用激振器能估计力-加
Introduction In June 1978, a large-scale mechanical excitation device was used for the first time to determine the dynamic response characteristics of an offshore oil platform. In the past, knowledge of the dynamic response characteristics of this structure was obtained by analyzing the structure’s response to wind and wave accelerations. Wind and waves are essentially an unknown random excitation force. Using an exciter can estimate force-plus