College of Mechanical Engineering;
Xi'an Shiyou University;
School of Traffic and Transportation Engineering;
Central South University;
Guangzhou Large Scale Track Maintenance Machine Running and Maintenance Division;
China Railway Guangzhou Group Co.;
Ltd.;
rail grinding; profile optimization; Kriging model; lateral displacement quantity; non-dominated sorting genetic algorithm Ⅱ(NSGA-Ⅱ);