Experimental and Numerical Investigation of Mechanical Properties in the Ultrasonic Assisted constraint groove pressing process of copper sheets

Asgari, Mohsen; Honarpisheh, Mohammad; Mansouri, Hadi

doi:10.22059/jufgnsm.2020.01.07

Experimental and Numerical Investigation of Mechanical Properties in the Ultrasonic Assisted constraint groove pressing process of copper sheets

Document Type : Research Paper

Authors

Mohsen Asgari ¹

Mohammad Honarpisheh ²

Hadi Mansouri ¹

¹ Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran.

² Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran

10.22059/jufgnsm.2020.01.07

Abstract

In this study, constraint groove pressing (CGP) process and ultrasonic assisted CGP (UCGP) process were investigated on the process forces, mechanical properties of the sheet, including hardness and tensile tests and grain size. Pure copper sheets were used as samples in this research. Samples were tested both with and without ultrasonic vibrations for mechanical properties and grain size up to 4 passes. The results of tensile tests showed that by applying CGP process, the strength of the samples increases significantly in the first two passes and then decreases. Hardness test results showed an increase which had the highest rate after the first pass. As expected, CGP process was very effective to create fine-grained metal structure. Also, process forces were investigated in both CGP and UCGP processes and then compared in 3 methods of 2 dimension (plane strain) simulation, 3 dimension simulation and experimental examination. After all, a good agreement was achieved.

Keywords

constraint groove pressing

ultrasonic vibrations

finite element

mechanical properties

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