Affiliation: | 1. School of Mechanics and Engineering, Southwest Jiaotong University,Chengdu 610031, P. R. China;Institute of Structural Mechanics, China Academy of Engineering Physics,Mianyang 621900, Sichuan Province 2. School of Mechanics and Engineering, Southwest Jiaotong University,Chengdu 610031, P. R. China 3. Institute of Structural Mechanics, China Academy of Engineering Physics,Mianyang 621900, Sichuan Province, P. R. China |