摘要
通过建立简支板结构导纳分析模型,并通过计算机仿真手段,研究了简支板的内阻尼对结构输入导纳及传递导纳的影响。研究结果表明:在复杂系统结构传统研究中,通常默认成立的前提假设“结构的传递导纳远小于结构的输入导纳”并非无条件的成立,而只有在板内阻尼达到一定值时,该假设才成立,当板内阻尼很小或为零时,传递导纳的影响不可忽略。
The characteristics of point mobility in a finite simple-supporting plate are investigated. Through computer emulation analysis, the change that system＇s input mobility and transfer mobility take placed following the change of plate＇s damping is present. Differ from the traditional conclusion, study shows that the assumption-“system＇s transfer mobility is much little than input mobility”-isn＇t right without anything add term. The effect that the transfer mobility brought couldn＇t be neglected until there is enough damping.
出处
《噪声与振动控制》
CSCD
北大核心
2005年第6期1-3,共3页
Noise and Vibration Control
基金
国家自然科学基金(50375121)全国优秀博士学位论文专项基金西北工业大学研究生种子基金资助
关键词
振动与波
简支板
导纳
研究
vibration and wave
simple-supporting plate
mobility
study
