摘要
为分析水电站实际振动的复杂扰动对结构动力特性分析的影响,在单扰动分析的基础上,结合功率流、Kronecker代数、Hadamard积及随机摄动理论,推导了考虑参数相关和扰动相关的复杂扰动条件下的功率流随机参数结构分析方法,并应用于水电站竖向振动传导分析。通过水电站厂房结构振动分析表明,复杂扰动分析方法的结果是正确的,可分析各参数扰动对能量传导率的灵敏度问题。该研究能够有效降低扰动范围,提高分析的准确率,为准确分析振动传导路径提供保障。
The effects of structural parameter disturbances on the dynamic characteristics of an actual hydropower station powerhouse were analysed. T he power flow analysis method considering complex disturbances and parameter- related disturbances were focused. On the basis of single disturbance analysis, the stochastic perturbation method was expanded and integratedly used with the dual disturbances analysis, power flow analysis, Kronecker algebra and Hadamard product. The correctness and feasibility of the method were validated by an example of analyzing the vibration model of the hydropower station powerhouse. The results indicate that the method proposed can efficiently reduce the disturbance range and can accurately analyze the transfer paths of vertical vibration in hydropower stations.
出处
《振动与冲击》
EI
CSCD
北大核心
2017年第6期102-107,共6页
Journal of Vibration and Shock
基金
国家自然科学基金资助(51379030)
关键词
复杂扰动
功率流
随机参数结构
传导路径
水电站
complex disturbance
power flow
stochastic perturbation method
transfer path
hydropower station
