1. School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, People’s Republic of China
2. Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu, Sichuan 610031, People’s Republic of China
3. School of Mathematics and Statistics, Hexi University, Zhangye 734000, China
4. Institute for Complex Systems and Mathematical Biology King’s College, University of Aberdeen, Aberdeen AB24 3UE, United Kingdom