In order to achieve prediction for vibration of rotating machinery, an accurate finite element （FE） model and an efficient parameter identification method of the rotor system are required. In this research, a test r...In order to achieve prediction for vibration of rotating machinery, an accurate finite element （FE） model and an efficient parameter identification method of the rotor system are required. In this research, a test rig is used as a prototype of a rotor system to validate a novel parameter identification technique based on an FE model. Rotor shaft vibration at varying operating speeds is measured and correlated with the FE results. Firstly, the theories of the FE modelling and identification technique are introduced. Then disk unbalance parameter, stiffness and damping coefficients of the bearing supports on the test rig are identified. The calculated responses of the FE model with identified parameters are studied in comparison with the experimental results.展开更多
Acta Pharmaceutica Sinica B is pleased to introduce a collection on The Development of Antiviral Drug Discovery,featuring articles published in the journal between January 2020 and January 2025.The discovery of antivi...Acta Pharmaceutica Sinica B is pleased to introduce a collection on The Development of Antiviral Drug Discovery,featuring articles published in the journal between January 2020 and January 2025.The discovery of antiviral drugs is a complex and significant process that requires an in-depth understanding of the viral life cycle,as well as the identification and validation of potential drug targets.Historically,the development of antiviral drugs began in the 1950s.展开更多
基金supported by the National Natural Science Foundation of China(50775028)the Ministry of Science and Technology of China for the 863 High-Tech Scheme(2007AA04Z418)
文摘In order to achieve prediction for vibration of rotating machinery, an accurate finite element （FE） model and an efficient parameter identification method of the rotor system are required. In this research, a test rig is used as a prototype of a rotor system to validate a novel parameter identification technique based on an FE model. Rotor shaft vibration at varying operating speeds is measured and correlated with the FE results. Firstly, the theories of the FE modelling and identification technique are introduced. Then disk unbalance parameter, stiffness and damping coefficients of the bearing supports on the test rig are identified. The calculated responses of the FE model with identified parameters are studied in comparison with the experimental results.
文摘Acta Pharmaceutica Sinica B is pleased to introduce a collection on The Development of Antiviral Drug Discovery,featuring articles published in the journal between January 2020 and January 2025.The discovery of antiviral drugs is a complex and significant process that requires an in-depth understanding of the viral life cycle,as well as the identification and validation of potential drug targets.Historically,the development of antiviral drugs began in the 1950s.
