国家高技术研究发展计划重点项目2012AA111802;湖南大学汽车车身先进设计制造国家重点实验室自主课题项目71075003Project2012AA111802 supported by the National High Technology Research and Development Program,China;Project71075003 supported by Hunan University Automobile Body Advanced Design and Manufacture of the State Key Laboratory of the Independent Research,China