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发表时间：2006-01-01

发表刊物：大连理工大学学报

所属单位：建设工程学部

期号：2

页面范围：262-266

ISSN号：1000-8608

摘要：The vibration of the power house in hydropower station becomes a much more serious problem. In order to satisfy the need of analyzing the cause of machine vibration and oscillating load in hydropower station, several optimal sensor placement criterions are summed up and the BDA (backward deletion algorithm) is introduced into the practical application. Based on the ANSYS-APDL a Fortran program is written for the special structure problem in hydropower station. The power house of Hongshi Hydropower Station is taken as an real example and the FEM model is established for the vibration identification and the optimal design of sensor placement. It is found that taking into consideration only the first two vibration modes of the power house is enough for the dynamic analysis. The method proposed here can provide more reliable information for the dynamic characteristics analysis in the hydropower station.

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