Experimental and Numerical Study of Electrically-Assisted Micro-Rolling
Electrically-assisted micro-rolling (EAR) system equipped with surface texturing function was utilized to characterize channel forming behavior of micro-rolling based texturing process.Finite element analyses for both nonelectrically- assisted micro-rolling (NEAR) and EAR which accounted for joule heating were performed to verify the experiment results.Furthermore,the influences of joule heating and roll force as well as friction condition on the formed channel profiles were discussed in detail based on the simulation results.It revealed that the formed width and depth of micro-channels were increased with increasing temperature and roll force.Additionally,pile-up at channel opening increased with increasing temperature at lower roll force,however,it decreased with an increase of temperature at higher roll force.It is possible to further improve the formed micro-channel shape by selecting an appropriate combination of roll force and temperature.Moreover,increasing friction helped to achieve larger channel depth,and friction difference between roll-sheet interfaces helped to eliminate the generation of pile-up at micro-channel opening.
Electrically-assisted Micro-rolling Thermal-mechanical Behavior Texturing
Rong Fan Man-Kwan Ng Dongkai Xu Ping Hu Jian Cao
Department of Mechanical Engineering,Northwestern University,Evanston,IL,60208-3111,USA;School of Au Department of Mechanical Engineering,Northwestern University,Evanston,IL,60208-3111,USA Department of Mechanical Engineering,Northwestern University,Evanston,IL,60208-3111,USA;Department o School of Automotive Engineering,Dalian University of Technology,Dalian,Liaoning,116024,PRC
国际会议
沈阳
英文
1038-1043
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）