APPLICATION OF INVERSION REDUCED-BASIS METHOD ON STRUCTURAL UNDAMPED FREE VIBRATION
Using reduced-basis method (RBM), design parameters are needed to be separated from the linear elastic operators (stiffness matrix, mass matrix, and loads), which is time-consuming. So, an improved reduced-basis method -inversion reduced-basis method (INVRBM) is introduced to calculate the lower order natural frequencies and mode shapes of structure. In this method, the computing process of design parameters separated from the linear elastic operators is simplified. At the same time, results from INVRBM are accurate, and the error estimation is done. In this paper, a truck frame is taken as an example, frequencies and mode shapes from INVRBM are obtained, and error bounds are also got. Comparing with results from the finite element method, INVRBM can obtain accurate results very fast, can also estimate error bound efficiently.
Reduced-basis method inversion reduced-basis method error estimation error bound
Yong-Hong Li
Institute of Rheological Mechanics &Material Engineering,Central South Univesty of Forestry & Technology,Changsha 410004,P.R. China
国际会议
长沙
英文
690-694
2009-10-26（万方平台首次上网日期，不代表论文的发表时间）