Optimization And Strength Analysis Into Weight Reduction Of Diesel Parts

The economy of production and use has always been the development theme of modern power machinery.In the development of power machinery,the weight reduction design of the structure is one of the important tasks.The current mainstream a kind of weight reduction methods is use lighter new composite materials,but this method will increase the cost of production.The other is design rational structure that allows the structure to achieve optimal material usage.Therefore,the second method is relatively more applied in the current engineering design field.This article studies the new diesel engine of a company.Based on the theoretical method of finite element and optimized design,the diesel engine body,connection box and free-end bracket are analyzed for weight reduction to increase the material utilization rate of the structure and reduce the production cost.The ANSYS is used to optimize the structure of work in harsh areas to reduce stress concentration.Due to the worst environment during diesel engine operation,only study the structure static of during diesel working conditions.Firstly,the ANSYS and static theory are used to analyze the initial static of diesel engine components.According to the structural stress and deformation cloud diagram,the structure maximum stress and deformation value are obtained and within the safe range.The body and connection box and free-end bracket can be further optimized for weight reduction.Secondly,the structure optimization model is established by using the topology optimization principle.According to the result of the optimization,the structure is modified to obtain the optimized three-dimensional model of each structure.Finally,the optimized results are verified in the ANSYS software.According to the verification results,the maximum equivalent stress is less than the yield limit of the material,so it is within the safe intensity range.So the body weight was reduced by 10.72% compared with the original weight,the weight of the connection box was reduced by 10.9% compared with the original,and the weight of the free-end bracket was reduced by 12% compared with the original.So it is reasonable to optimize the lightweight analysis of the body,connection box and free-end bracket.