[1] Dalian Univ Technol, Sch Naval Architecture, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China
[2] China Univ Min & Technol, Sch Math, Xuzhou 221116, Peoples R China
[3] China Univ Min & Technol, Inst Math Phys, Xuzhou 221116, Peoples R China
[4] Collaborat Innovat Ctr Adv Ship & Deep Sea Explor, Shanghai 200240, Peoples R China