The frequency response functions of relative displacement and absolute acceleration are derived under acting of harmonic ground excitation 推导了地面简谐运动作用下的加速度和位移的频率响应函数。
At last , the process and method of structure response under blasting vibration stimulation by using frequency response function are explained 最后说明了用频响函数来计算结构在爆破震动激励下的响应的具体步骤及方法。
Firstly , a systematic study of lots of paper is made , modal analysis method that accord to frequency response function is introduced 本文首先在综述大量相关文献的基础上,系统总结了根据系统频响函数进行模态分析的方法。
Frequency response function ( frf ) contains abundant structural dynamic characteristics , but the high redundancy and the huge data confine its application 结构的频响函数包含了更丰富的结构动力信息,但数据量大、冗余度高,不利于工程应用。
The structure finite element model updating algorithm directly based on the frequency response function which is widely concerned ever since the 90 ’ s is investigated 对90年代以来广受关注的直接基于频率响应函数的结构有限元模型修正算法进行探索研究。
Structure finite element model updating technology based on the frequency response function is one of the most important directions in current structure dynamics research 基于频响函数的结构有限元模型修正技术是当前结构动力学领域的重要研究方向之一。
Modification of dynamics model could enhance the consistency of modality parameters in both model and practical system or the degree of similarity between their frequency response function curves 修正动力学模型可以提高分析模型与实际系统二者模态参数的一致性或其频响函数曲线间的相似度。
Based on the equation of general frequency response functions ( gfrf ) of the non - linear dynamic systems , in this paper , the difference is applied to detect the non - linear element positions in a complex structure 本文在研究非线性系统广义频率响应函数表达式的基础上,导出一种适用于复杂结构中非线性元件位置分布的判断方法。
By deducing the theory of this method , it comes to a conclusion that auto - cross spectrum density method is much the same as peak picking method based on frequency response function . and it also talks about the virtues and defects of the method 本文通过对相关理论的推导,说明了自互谱法与基于频响函数的峰值摄取法是近似相通的,同时对该方法的优缺点作了叙述。