A PORE FORMING METHOD ON COPPER SHEET BOTTOM WITH GLASS SUBSTRATE BY DIAMOND TIP INDENTING

摘要

A method that using the nano-scale blunt round tip of cone-shaped diamond tool to indent and pierce through the metal sheet at the bottom to form a pore even ultramicropore is proposed and studied in this paper. Firstly, Deform-3D software is used to simulate and analyze the copper sheet deformation during indenting process under different constraint conditions, and finding the bottom constraint condition suitable for the pore forming. Secondly, based on the constraint condition chosen, the model is simulated in two kinds of substrate material, aluminum and glass. Then the copper plastic flow characteristics, the quality of the pore-forming and the equivalent stress distribution are analyzed through simulation. Finally, a pore-forming experiment is done to test the simulation results, showing that the hard substrate is better for the pore-forming of copper sheet.