期刊论文

Cui, Z.-D.

中文

振动与冲击

1000-3835

2007

26

2

48-50+71

10.3969/j.issn.1000-3835.2007.02.013

湖南省教育厅青年科学基金资助项目（01B017）； 国家自然科学基金资助项目（40372124）；

本校为其他机构

叠层板状结构是新型核反应堆设计中所采用的一种堆芯元件，具有结构合理、比功率高和传热性能好等显著特点。提出了单梁与多梁对接的力学模型，以干模态振型函数序列作为试函数对复模态振型方程进行变分求解，研究了叠层板状元件在湿模态下的固有频率与振型，发现叠层板状结构的流致振动具有复模态特性，文中初步找到一些规律性的结果，为设计和安全分析提供一些有用的方法和数据。

Flow-induced vibration and hydroelastic instability of parallel-plate assemblies are studied theoretically. A model of multi-parallel-beams joined with a single-beam is adopted in the theoretical analysis of the natural vibration characteristics of the parallel-plate assembly. In the theoretical calculation and analysis on the wet natural modes, the dry-modal functions are used as trial functions to solve the complex mode equation, utilizing the extended Galerkin method. Fluid-structure interaction on the parallel-plate assemblies is of complex-modal characteristics. Some regular results are d...