Mechanics analysis and collaborative simulation of ejection system of the auxiliary fuel tank were preformed.Firstly,the kinematics and loads of the multibody system were analyzed.Moreover,a virtual prototype of the ejection system was assembled,and the dynamic simulation was done by SolidWorks and ADAMS softwares cooperatively.Then,theoretical analysis of dynamic plastic impact for the restoring spring was carried out,and the impact responding simulation including for the restoring spring was implemented b...