Fig. 1 Pendulum vibration absorber system in a gravity field More about this image found in Pendulum vibration absorber system in a gravity field

Fig. 2 Phase plane portrait for the tautochronic nonlinear system in physical coordinate ϕ More about this image found in Phase plane portrait for the tautochronic nonlinear system in physical coor...

Fig. 3 Phase plane portrait for the tautochronic linear system in u More about this image found in Phase plane portrait for the tautochronic linear system in u

Fig. 4 Instantaneous frequency of both oscillators over three periods of oscillation for ϵ = 0.3 More about this image found in Instantaneous frequency of both oscillators over three periods of oscillati...

Fig. 1 Mode identification procedure for analyzing the k th NNM More about this image found in Mode identification procedure for analyzing the k th NNM

Fig. 2 FEM of the I-shaped cantilever beam More about this image found in FEM of the I-shaped cantilever beam

Fig. 3 Mode shapes used to construct the reduced-order model: ( a ) constraint mode and ( b )–( j ) first to ninth CMS normal modes More about this image found in Mode shapes used to construct the reduced-order model: ( a ) constraint mod...

Fig. 4 ( a ) Frequency-energy curves of the first NNM. The modal curves of the 2DOF, 3DOF, 4DOF, 15DOF, and 20DOF models are represented using blue, orange, green, red, and black, respectively. The inclusion of CMS normal modes in these models is based on the order of their frequencies. ( b ) Freq... More about this image found in ( a ) Frequency-energy curves of the first NNM. The modal curves of the 2DO...

Fig. 5 ( a ) Mode shape of the first NNM at its low-energy level ( ) and ( b ) mode shape of the first NNM at its high-energy level ( ) More about this image found in ( a ) Mode shape of the first NNM at its low-energy level ( ) and ( b ) mod...

Fig. 5 ( a ) Mode shape of the first NNM at its low-energy level ( ) and ( b ) mode shape of the first NNM at its high-energy level ( ) More about this image found in ( a ) Mode shape of the first NNM at its low-energy level ( ) and ( b ) mod...

Fig. 5 ( a ) Mode shape of the first NNM at its low-energy level ( ) and ( b ) mode shape of the first NNM at its high-energy level ( ) More about this image found in ( a ) Mode shape of the first NNM at its low-energy level ( ) and ( b ) mod...