Dynamic analysis of autonomous risk avoidance of amphibious floating bridge based on discrete element method and physical engine

¹ Hubei Key Laboratory of Advanced Technology for Automotive Component, Wuhan University of Technology, Wuhan, China.
² School of Automotive Engineering, Wuhan University of Technology, Wuhan, China.

^* Corresponding author: a WenbinZhang@whut.edu.cn
^b MingxinYe@whut.edu.cn

Abstract

In this paper, based on an intelligent floating bridge, by using discrete element methods and physical engines, under the action of certain missile repulsion fields, the force process and motion path in the process of autonomous evasion of missiles are studied. Firstly, the static simulation of missile repulsion fields is carried out by using the polynomial least square surface fitting method. According to the strength of repulsion field at different times and the extrusion force between the pontoons, the kinematic equation of the pontoon is established. The equation is discretised by using a discrete element method, and the kinematic equation is obtained according to the time iteration. Then, motion analysis is carried out by using a physical engine on the basis of equation Analysis. Finally, the position parameters before and after the self-evasion missile of the floating bridge are calculated, and the simulation program is written in MATLAB. The dynamic simulation experiment of the whole evasion missile process is carried out, and the results are satisfactory.