【摘要】 文中给出了在递迭代法中求高阶频率和振型的清型样阵;讨论了在任意激励下,结构响应的两种解法,证明其等价性,並讨论了振型迭加法的一种改进。更多还原

【Abstract】 In this paper, the cleaning matrix, which is used to determine the higher order frequencies and modes by the inverse iteration method, is deduced. Two methods are discussed for analysing. the response of linear system under arbitrary excitation(in time region) and the equivalence of the two methods are shown. An improvement procedure on mode superpositiort method is proposed. The effciency of the procedure is demonstrated by a numerical example.更多还原