Topology Optimization And Design Of Automobile Front Subframe And Trial Production

In recent years,the demand for high-quality automobile has continued to increase,and sub-frames have been applied to many frames to improve the overall quality of the automobile.The general sub-frame can play a supporting and connecting function,which can effectively improve the driving,comfort and safety of the automobile.This article takes the aluminum alloy front subframe as the research object.On the premise of familiarity with its component parts,the geometric model is established using CATIA.At the same time,the topology optimization is performed to complete the above steps,and the spatial structure will be arranged.The finite element pre-processing is completed using Hyper Mesh,so the finite element model of the layout space is established.The next step is to use the software Opti Struct for multi-objective topology optimization.According to the process casting standard and the calculation data of topology optimization,the front subframe of the automobile is designed.The aluminum alloy material frame needs to be designed,and the static analysis of the aluminum alloy front subframe is performed.Based on the technical analysis of the aluminum alloy sub-frame,the low-pressure casting production method was determined,and then a corresponding pouring system was established.Then,the casting simulation software Pro CAST was used to obtain the entire process of sub-frame solidification and filling.The final prediction is to complete the shrinkage hole defect and the shrinkage defect,providing support for the next stage of the optimization process.The static force is analyzed first,and the conclusions of the data are used.The software Opti Struct is used to analyze the fatigue life of the front subframe.The vulnerable area of the automobile can be found in the fatigue cloud diagram of the front subframe of the car.The modal analysis steps also need to be completed for the front subframe,and each order modal meets the requirements of the partner.The designed aluminum alloy front sub-frame was subjected to low-pressure casting trial production,and 3D printing equipment was used to print out the adhesive to bond the sand particles together,directly produce sand molds and cores,and finally perform low-pressure casting.In this paper,the topology optimization design of the front subframe is performed,and static analysis,modal analysis,fatigue analysis,casting simulation and trial production are carried out.Finally,products that meet the requirements are designed,and other automotive chassis parts are provided for research and reference.