摘要
有限元法适用的频率范围与单元的大小有关,为了用有限元准确地描述高频振动(结构噪声),一个振动波长中至少划分4个单元.由此,根据研究问题的频率范围更合理地确定单元的大小,并适当选取计算的规模,预报了某基座模型2000Hz内的结构噪声,此研究具有工程应用意义.
The frequency range applicable for FEM is related to the size of elements. In order to exactly describe vibration of high frequency (structuralnoise), there is no less than 4 elements in avibration wave, whichis applied to optimize the quantity of elements. TheFEM succeeds incalculatingstructural noise of some basement in range of 2 000 Hz. The research is of practical value to a certain extent in engineering.
出处
《海军工程大学学报》
CAS
2003年第6期33-36,共4页
Journal of Naval University of Engineering
