摘要
研究了厚薄板通用三角形广义协调单元TCGC-T9的固有振动特性．通过编制程序,采用子空间迭代法求得不同板厚的前5阶固有频率值,并将计算结果与理论解和有限元软件ABAQUS的结果进行比较．结果表明:TCGC-T9单元在固有振动分析方面收敛速度快,数值稳定性好、实用性强(无需区分厚板和薄板)．
The free vibration property of the generalized conforming thick/thin element TCGC-T9 is studied in this paper. The first five natural frequencies with different plate thickness are obtained using the sub-space iteration method. By comparing the results with those obtained by ABAQUS and the theoretical solution, it can be concluded that the TCGC-T9 element enjoys the following advantages： good convergence, high numerical stability and excellent applicability （valid for both thick or thin plates） in analyzing free vibration of plate.
出处
《力学与实践》
CSCD
北大核心
2007年第3期30-35,共6页
Mechanics in Engineering
基金
国家自然科学基金重大项目(50490272)
国家重点基础研究发展规划(973)项目(2002CB412705)
国家自然科学基金项目(10572147)
教育部创新团体计划项目(IRT0408)
教育部重大科技基金项目(10427)
关键词
固有振动
广义协调元
固有频率
子空间迭代法
ABAQUS
free vibration, generalized conforming element, natural frequency, sub-space iteration method,ABAQUS
