Numerical simulation of single-pulse laser ablation for dressing a bronze-bond diamond grinding wheel》.pdfVIP

G Model PRE-6257; No. of Pages 8 ARTICLE IN PRESS Precision Engineering xxx (2015) xxx–xxx Contents lists available at ScienceDirect Precision Engineering j o u r n a l h o me p a g e: w w w. elsev /locate/precision Numerical simulation of single-pulse laser ablation for dressing a bronze-bond diamond grinding wheel Cong Zhou a,b,∗ , Hui Deng a,b,1, Genyu Chen a,b , Yong Zhang a,b , Dawei Wang a,b , Xingcai Zhou a,b a State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China b Institute of Laser Technology, Hunan University, Changsha 410082, China a r t i c l e i n f o a b s t r a c t Article history: To investigate the interaction between a laser beam and the bronze substrate in pulsed laser dressing of Received 11 February 2015 bronze-bonded diamond abrasive grinding wheels, a two-dimensional, transient numerical model of the Received in revised form 21 May 2015 three-phase (solid–liquid–gas) coupling in single-pulse laser ablation of the bronze was developed. The Accepted 27 June 2015 model accounts for the heat transfer, solidification, melting and vaporisation processes; the latent heat Available online xxx mechanism of the phase changes; and various critical factors such as surface tension, the vaporisation- induced recoil force, the thermal buoyancy force, and Darcy friction. The phase-field method is used to Keywords: