Structural Optimization And Lightweight Design Of Mortar Base Plate

From the point of the future combat needs,reducing weight,improving mobility and rapid response capability has become the development trend of mortars.According to the tasks of the mortar,mortars not only need to ensure the power,but also as small and light as possible.And the mortar base plate is the main part,lightweight mortar base plate is one of the key technologies of new mortar.This article mainly from two aspects of the structure and material of the mortar base plate,The finite element method is used for optimization design.The main research contents are as follows:In this paper,the firing process and force of the mortar are analyzed firstly,the mortar mostly is supported by the mid-hard soil during firing,the mortar base plate bears a great bore resultantforce,therfore,the structure cannot occur plastic deformation must be fully considered when the design.On this basis,the preliminary structure design of the mortar base plate is carried on.In order to analyze the strength of the structure in detail,a coupling nonlinear finite element model of mortar base plate and hard soil was built,half an infinite space body is used by the soil,Non-linear relationship between the mortar base plate and soil is used.ANSYS Workbench is used to simulate and analyze the stress and strain of the mortar base plate at different angles under the maximum bore resultantforce.And the gun firing test program is designed,the rationality of the simulation is verified.Based on the analysis of the simulation and test results,the material and structure are further optimized,the quality than the existing same caliber morter base plate has reduced by 50%,the structure satisfies the requirement of the firing strength.The research results of this paper on the optimization design,simulation and test verification of the mortar base plate can provide a reference for the mortar lightweight.