摘要
以某工程平板闸门的动力学问题为背景,考虑流固耦合效应对闸门结构自振特性的影响,应用ANSYS软件对闸门的自振特性进行了分析计算,取得了流体对结构自振特性的影响规律:闸门自振频率随门前水体的增加而减少,最大频率下降率达45%。此外,还探讨了流固耦合液相长度的取值范围,当液相长度取闸门高度的10倍时各阶固有频率已趋稳定,可以满足计算精度的要求,为闸门流固耦合振动特性研究提供了依据。
Taking the dynamic problem of an engineering plate gate as the background of this work, the natural properties of the plate gate were numerically analyzed by using ANSYS. In the analysis, the influence of liquid-solid coupling on the natural vibration properties of the gate was taken into consideration. Analytical results show that the natural frequencies of the gate decreases with the increase of the water in front of the gate, and the max decline rate of the frequency reaches 45%. A study of the range of liquid length was also made in the paper. From the study it indicates that when the liquid length reaches ten times of the height of the gate, the natural frequencies of the gate are tending to be stable with satisfactory accuracy, which provides a basis for further study of the dynamic properties of liquid-solid coupled vibration of the plate gate.
出处
《振动．测试与诊断》
EI
CSCD
2008年第3期242-246,共5页
Journal of Vibration,Measurement & Diagnosis
基金
科技部"多功能闸门振动试验装置升级及技术开发"基金资助项目(编号:Ja-2001-21)
关键词
平板闸门
自振特性
流固耦合
有限元法
ANSYS软件
液相取值范围
plate gate natural vibration property fluid-solid coupling fi nite element method ANSYS software range of liquid length
