School of Mathematics and Quantitative Economics, Dongbei University of Finance and Economics,116025 Dalian, China;
School of Mathematical Sciences,Dalian University of Technology,116024 Dalian, China;
Key Laboratory of Liaoning Province for Composite Structural Analysis of Aerocraft and Simulation, Shenyang Aerospace University, 110136 Shenyang, China State Key Laboratory for Structural Analysis of Industrial Equipment, Dalian University of Technology,116024 Dalian, China;