The simulation results of choke flow of the fuel tank structure are obtained, which provides reference for the structural optimization design of the honeycomb barrier and explosion-proof material for the UAV. Taking a three-layer superposition model of the UAV fuel tank as the research object, the stress and strain of the material structure under detonation impact are analyzed by a bidirectional fluid structure coupling method.

It simplifies the problem due to the symmetry of the barrier and explosion-proof structure of the UAV fuel tank. In this study, the stress, strain, and flow blocking effect of the explosion-proof honeycomb structure of a UAV fuel tank are analyzed when it is impacted by continuous fluid caused by explosion, and the main stress concentration areas and overall stress distribution are analyzed. 2Department of Chemistry, College of Science, China University of Petroleum (East China), Qingdao, China.1Beijing Institute of New Energy Technology, Beijing, China.Chunzhi Wang 1,2* Changbo Lu 1 Xufeng Lin 2 Gaojun An 1 Ximeng Xu 1 Yumeng Gan 1

Tank shell explosion force