Topology Optimization Of Engineering Vehicle Frame And Weight Reduction Design

It was found that there were several technical problems such as too heavyweight and inferior mobility during the research and development of anengineering truck. Therefore it was necessary to lighten the weight of thevehicle while the overall performance was not weakened. In order to achievesuch a goal, the structure stiffness, strength and optimization are examinedfor the auxiliary frame of the truck by means of 3D modeling technology, finiteelement method, and topological optimization theory, which can providetheoretical guide to the system design and detailed design for such vehicles.The finite element modeling theory and the topological optimizationalgorithm of variable density method were introduced, together with theprinciple of choosing the material for the frame. The 3D model of the framewas constructed by Unigraphics packages. The structure analysis and the loadconditions were investigated. The finite element model was set up, and thensimulation was conducted for the frame, including stiffness, strength, andmodal vibration. The simulated result was discussed.Based on 3D model of the frame, the design space for the optimization wasdefined, and the finite element model was created. The result of thetopological optimization was retrieved by computation, which was exported into3D model, and then the new design could be obtained by modifying the optimizedstructure with consideration of the actual requirements of manufacturing.The structure of the frame was improved according to the topologyoptimization result. The new finite element model was constructed to computethe stiffness, strength, and modal characteristics for the optimized frame.The comparison between the two simulated results shows that the topologicaloptimization is effective.