Mechanics & Industry
Volume 23, 2022
|Number of page(s)||10|
|Published online||04 July 2022|
Experimental study on influence of ultrasonic vibration on forming limit
School of Electronic Engineering and Intelligent Manufacturing, Anqing Normal University, Anhui 246133, PR China
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Accepted: 15 March 2022
Applying ultrasonic vibration in sheet metal forming can change its forming mechanism and improve its formability. The uniaxial tensile and bulging forming limit experimental setups were designed to study the ultrasonic vibration and forming limit relationship induced by ultrasonic excitation, and the results under different experimental conditions were analyzed. It was found that ultrasonic vibration has different effects on the left and right sides of forming limit diagram (FLD). Under the same ultrasonic vibration frequency, the maximum increment of left and right major limit strain is about 9.3% and 8.7%, respectively. The former is larger than the latter, and the strain increment increases with the increase of ultrasonic vibration frequency, but the basic shapes of FLD are unchanged.
Key words: Ultrasonic vibration / uniaxial tension / bulging / forming limit diagram
© C. Zha and S. Zha, Published by EDP Sciences 2022
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