... Vibration 207, 249-270. . 7. Nguyen Xuan Hung (1999), Dynamics of structures and its application in structural identification, Institute of Applied Mechanics 8. N. T. Khiem, T. V. Lien (2001), “A ... eigenmodes : 3Three-Span(m)Amplitude 10 %20%30%40%50%60%0 0.5 1 1.5 2 2.5-1-0.8-0.6-0.4-0.200.20.40.6Comparision of the eigenmodes : 3Three-Span(m)Amplitude 10 %20%30%40%50%60%0 ... : 3Three-Span(m)Amplitude 10 %20%30%40%50%60%0 0.5 1 1.5 2 2.5-1.2-1-0.8-0.6-0.4-0.200.20.40.6Comparision of the eigenmodes : 3Three-Span(m)Amplitude 10 %20%30%40%50%60%0...