Affiliation:
1. University of Sheffield
Abstract
A 3-D coupled temperature-displacement finite element analysis is performed to study an
ultrasonic consolidation process. Results show that ultrasonic wave is effective in causing
deformation in aluminum foils. Ultrasonic vibration leads to an oscillating stress field. The
oscillation of stress in substrate lags behind the ultrasonic vibration by about 0.1 cycle of ultrasonic
wave. The upper foil, which is in contact with the substrate, has the most severe deformation. The
substrate undergoes little deformation. Apparent material softening by ultrasonic wave, which is of
great concern for decades, is successfully simulated. The higher the friction coefficient, the more
obvious the apparent material softening effect.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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