supported by Open Fund of Key Laboratory of Advanced Manufacturing Technology for Automobile Parts,Ministry of Education,Chongqing University of Technology and Innovation Fund of Postgraduate for Chongqing University of Technology ( YCX2013208)
Sponsored by National Natural Science Foundation of China(51205433);National Natural Science Foundation of Chongqing(cstc2011jjA60003);2012 Open Foundation of Key Laboratory of Manufactory and Test Techniques of Automobile Parts,Ministry Education,Chongqing University of Technology