Title: Experiment and numerical simulation of laser shock micro dents

Authors: Huixia Liu; Zhihui Huang; Chunxing Gu; Zongbao Shen; Xiao Wang

Addresses: School of Mechanical Engineering, Jiangsu University, Xuefu Road, Zhenjiang, 212013, China ' School of Mechanical Engineering, Jiangsu University, Xuefu Road, Zhenjiang 212013, China ' School of Mechanical Engineering, Jiangsu University, Xuefu Road, Zhenjiang 212013, China ' School of Mechanical Engineering, Jiangsu University, Xuefu Road, Zhenjiang 212013, China ' School of Mechanical Engineering, Jiangsu University, Xuefu Road, Zhenjiang 212013, China

Abstract: In order to overcome the deficiencies of the traditional laser surface texturing, a useful surface texturing method by generating micro dents based on the laser shock processing technology was investigated in this paper. A series of experiments focusing on the effects of pulse energies and shock numbers for laser shock micro dents were carried out. An analysis procedure including dynamic analysis performed by ANSYS/LS-DYNA and static analysis performed by ANSYS is presented in detail to establish a 3D finite element model. By establishing more reasonable and accurate model, the simulation results would have better correlation with the experimental results. The bulges around the dents are observed in the experiment and simulation results. Besides, the calculation formula of laser shock wave pressure can be revised by comparing simulation results with experimental results.

Keywords: laser shock processing; LSP; laser shock surface texturing; micro dents; bulges; numerical simulation; pulse energies; shock numbers; finite element method; 3D modelling; shock wave pressure.

DOI: 10.1504/IJSURFSE.2014.059311

International Journal of Surface Science and Engineering, 2014 Vol.8 No.1, pp.57 - 70

Received: 08 Mar 2013
Accepted: 21 Sep 2013

Published online: 17 Feb 2014 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article