| This thesis is about the dynamic simulation of a light mortar and the analysis of its firing stability. 3-D solid modeling software, finite element software and dynamic simulation software were used to establish the whole mortar's solid model, multi -rigid-body and rigid-flexible coupling dynamic model of multi-body dynamic model, and get the dynamic response during the launching process by solving dynamic model. In this paper, the work done as follows:1) Reseach on the mortar's virtual prototype. UG software was applied to establish the whole mortar's 3-D solid model, and then import it into ADAMS software. Model will be simplified to determine the topological relations between parts.Then establish the whole mortar's rigid-body dynamics model. Base-plate's Neutral File (. mnf) will be generated by using ANSYS software, and then using ADAMS /Flex module in ADAMS to establish the whole artillery of the rigid-flexible coupling dynamic simulation model.2) Dynamics analysis of the mortar recoil system. The kinetic differential equations of the recoil system and the equations of the soil resistance were established. By using MATLAB/Simulink, simulation model of the interior ballistic and the recoil system were established, and the dynamic simulation of the mortar's recoil system was carried on.3) Co-simulation of the cannon launching dynamics. By using the interactive function of ADAMS and MATLAB/Simulink software, the dynamic modle can creat ADAMS_Sub module from ADAMS software and then embedded it into simulation model of recoil system. With the synchroized operation of ADAMS and MATLAB/Simulink, co-simulation of the mortar was carried out and the dynamic response was analyzed.4) Analysis of some mortar's firing stability. Through post-processing the results of the co-simulation and observing the motion curve, some mortar's firing stability were analysed. Based on an analysis of the results of the simulation, the established module and simulation model was evaluated. |
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