3D FE analysis of shot peening of strain-rate sensitive materials Accounting for Multiple and Repeated Impingement
This paper is devoted to the investigation of the shot-peening process using 3D finite element (FE) model of multiple impingement.In this analysis,we implement a novel symmetry cell approach to examine the impact effect of a large number of rigid and deformable shots on a high-strength steel target made from AISI 4340.Dynamic elasto-plastic simulations were conducted using a rate sensitive material model.A number of convergence tests,which account for element size and stiffness of contact elements,were carried out.In addition,efforts were devoted to determine the appropriate material damping parameters needed to dampen unwanted numerical oscillations associated with the explicit solver of LS-DYNA for this class of problems.The model was used to predict the effect of peening coverage upon the mechanically induced residual stress field for rate sensitive materials under multiple and repeated impacts.
Shot-peening Multiple impacts Residual stress Finite elements Rate sensitive
Shaker A.Meguid Fan Yang Chen Zhuo Mario Guagliano
Mechanical and Aerospace Design Laboratory,University of Toronto,Toronto ON M4Y 1R5,Canada Dipartimento di Meccanica_Politecnico di Milano,Via La Masa,1,20156 Milano,Italy
国际会议
北京
英文
1-8
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）