Research On Lightweight Technology Of An Anti-riot Launcher

The research of lightweight technology has always been one of the key technologies of structural optimization.The traditional design method is to determine the section size of each part according to the empirical formula on the basis of the mechanical model,but the obtained structure is often large in size and weight,which wastes a lot of materials and does not meet the requirements of lightweight.In this paper,a type of anti-riot launcher is taken as the research object,and its structure is improved and optimized.It is found that the quality of the optimized structure is reduced,and its strength and stiffness also meet the requirements.In this paper,the static finite element model of the rocking frame in a specific state and the firing process of the mounting is established,and the maximum stress and deformation under i MPact load are obtained.Secondly,aiming at the lightweight requirements of the shaking frame,the parametric model from structural modeling to finite element calculation is established based on isight software platform.The DOE module and the optimal Latin Hypercube sampling method were used to design the experiment,and the sensitivity of each parameter to the objective function was analyzed.Based on the response surface model,the parametric finite element approximation model of the shaking frame is established.Using NSGA-Ⅱ algorithm,taking the size of the rocking frame as the design variable,the mass and the maximum deformation as the objective function,and the maximum stress as the constraint condition,the optimal solution set of the rocking frame is obtained through optimization,and the mass of the rocking frame is reduced on this basis.Finally,the topology optimization was carried out for the bracket,and the finite element calculation was carried out again at different times to check the optimized result,and it was found that it could not meet the performance requirements of the multi-time.On this basis,the topology optimization calculation under the multi-level was put forward,and the topology optimization was carried out several times and whether the results of each topology optimization met the requirements of the multi-working conditions.Finally,after three times of topology optimization,the multi-time performance is satisfied and the weight is reduced.Compared with the original scheme,the stress distribution is more reasonable.Aiming at a certain anti-riot launcher lightweight design,this paper provides some optimization methods for weight reduction,which has certain significance.