A Vehicle Automatic Mortar Gun Dynamics Simulation,

This thesis is to study the vehicle-mounted mortar, and uses Virtual Prototype (VP) technology and joint simulation method to analyze automation dynamics and lunch dynamics of mortar. Then it discusses the firing stability and muzzle deflection of the vehicle-mounted mortar. The main part of this thesis can be summarized as following:1. Analyze the overall structure of the vehicle-mounted mortar, establish the mortar's 3-D model by use of Pro/Engineer, provide dynamics analysis with such important figures as mass of each part, mass center and rotation inertia. In this way, the data for the mortar's dynamic simulation is ready.2. Analyze the operational principle, build up math models for automation and the interior ballistic, solve a simulating model for the automatic machine by means of MATLAB/Simulink software, and conduct a preliminary calculation. Therefore, the theoretical foundation for the joint simulation is laid out.3. Establish the multi-bodied dynamic model of the vehicle-mounted mortar in ADAMS environment, build up an overall joint simulation model combined with the previously-built simulating model for the automation, adjust the simulation parameters for the first time. Then carry out a joint simulation of the vehicle-mounted mortar and analyze the result.4. Based on the computational results of the joint simulation, analyze the firing stability of the vehicle-mounted mortar, according to the displacement of the mortar and the angle displacement curve in the process of four burst of fired; in the meantime, obtain the muzzle deflection curve which lay out the necessary foundation for the further study on the precision of the vehicle-mounted mortar.