http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Panot Chobsilprakob,Songsak Suthasupradit,김기두 한국강구조학회 2011 International Journal of Steel Structures Vol.11 No.2
A time domain approach for predicting the flutter response of long-span bridges was presented. The unsteady aerodynamic forces were presented by the indicial functions through a convolution integral, whereas the nonlinear least square method was used to calculate the aerodynamic indicial parameters. The nonlinear dynamic analysis which includes both the geometric and material nonlinearities due to the unsteady self excited aerodynamics force was considered. Numerical analyses were then performed using three dimensional finite element model of the suspension bridge. The results show that the geometric and material nonlinearities have a significant influence on the critical velocity and the response of long-span bridges.
Panot Chobsilprakob,김기두,Songsak Suthasupradit,Anaphat Manovachirasan 한국강구조학회 2014 International Journal of Steel Structures Vol.14 No.1
The design of cable supported bridge with long span is challenging due to the sensitivity of the dynamic excitation. Theaerodynamic instability caused by fluttering can severely affect the safe operation. An application of indicial function to the flutteranalysis in time domain is applied to the Great belt East Bridge for both completed and erection stage. The nonlinear least squaremethod was used to extract the aerodynamic indicial parameters for flutter analysis in time domain. The geometric nonlinearityis considered through the nonlinear dynamic analysis. The results showed the good agreement with the wind tunnel test and thevalidity of the indicial function as well as the important role of the geometrically nonlinear analysis during deck erection.