2 research outputs found
Finite amplitude flexural vibrations at ultrasonic frequencies in metallic bars
9 páginas, 15 figurasThis paper deals with a theoretical and experimental study about the nonlinear behavior of metals
subjected to intense ultrasonic, flexural vi brations. In the theoretical analysis a one-dimensional,
second-order wave equation is established and solved by means of the successive approximation
method. The solution for standing, flexural waves is obtained by applying the superposition
principle. Spatial distributions of force, momentum, and particle velocity are derived as well as the
waveforms. The experimental study is carried out with resonant, prismatic bars driven at their
central sections at frequencies in the range of 20-30 kHz. The samples are driven by means of a
piezoelectric transducer. The vibration amplitudes and waveforms are monitored by using a laser
vibrometer. Good agreement is found comparing the experimental and theoretical results.This research was supported by the Plan Nacional de
Tecnologías Avanzadas de la Producción (research project
TAP 93-230). The authors thank Dr. F. Montoya-Vitini and
Mr. P.T . Sánz-Sánchez for the designm and construction of the
electronic excitation system and Dr. T. Hoffmann for revision.Peer reviewe
Finite amplitude flexural vibrations at ultrasonic frequencies in metallic bars
9 páginas, 15 figurasThis paper deals with a theoretical and experimental study about the nonlinear behavior of metals
subjected to intense ultrasonic, flexural vi brations. In the theoretical analysis a one-dimensional,
second-order wave equation is established and solved by means of the successive approximation
method. The solution for standing, flexural waves is obtained by applying the superposition
principle. Spatial distributions of force, momentum, and particle velocity are derived as well as the
waveforms. The experimental study is carried out with resonant, prismatic bars driven at their
central sections at frequencies in the range of 20-30 kHz. The samples are driven by means of a
piezoelectric transducer. The vibration amplitudes and waveforms are monitored by using a laser
vibrometer. Good agreement is found comparing the experimental and theoretical results.This research was supported by the Plan Nacional de
Tecnologías Avanzadas de la Producción (research project
TAP 93-230). The authors thank Dr. F. Montoya-Vitini and
Mr. P.T . Sánz-Sánchez for the designm and construction of the
electronic excitation system and Dr. T. Hoffmann for revision.Peer reviewe