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Theories and experiments on effects of acoustic energy field in micro-square cup drawing

  • Chang-Li ZhaEmail author
  • Wei Chen
ORIGINAL ARTICLE
  • 40 Downloads

Abstract

A vibration-assisted uniaxial tension experimental setup was designed to study the stress-strain relationship induced by ultrasonic excitation, and an acoustic-plastic constitutive model was developed and calibrated based on dislocation density evolution under experimental data. Also a prediction model for the drawing height of micro-square cups in vibration-assisted plastic deformation was investigated based on the dangerous section stress theory and the acoustic-plastic constitutive model. The prediction model was validated by designing a finite element model and an experimental deep drawing system under various working conditions, in which 200-μm-thick stainless steel 304 was excited by ultrasonic vibration at frequency 19.891 kHz and different amplitudes. It was found the predicted drawing height of micro-square cups agreed well with the experimental results, indicating the prediction model was able to accurately predict the drawing height of micro-square cups during vibration-assisted metal micro-forming.

Keywords

Ultrasonic vibration Acoustic softening and stress superposition Micro-square cup Prediction model 

Notes

Funding information

This work was financially supported by the National Science Foundation of China (Grant No.51875263) and the Natural Science Foundation of Educational Commission of Anhui Province of China (Grant No. KJ2019A0576).

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Mechanical EngineeringJiangsu UniversityZhenjiangChina
  2. 2.School of Physics and Electronic EngineeringAnqing Normal UniversityAnqingChina

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