Topology Optimization Design Of Supporting Frame On Hub Motor Stator And Steering Knuckle

This article was in the background of the rapid development of new energy vehicles,which focused on the topology optimization of the hub motor stator supporting frame and steering knuckle.It expanded and optimized the flexibility and mode frequency optimization process and studied the multi-objective topology optimization design method for the composite material.And it has built the reconstruction of knuckle and the stator which passed the strength requirements during the simulation.The stator supporting frame has been machined and it has been experimented of stress and mode frequency to verify the simulation.First,the article introduced the development of topology optimization and composite material.Also it summarized the optimization method which has been used in vehicle design.Especially the motor lightweight and knuckle optimization were highlighted.Then the rigid coupling model of the vehicle has been built in the ADAMS software.Some typical operating conditions were simulated which provides the loads of knuckle and stator supporting frame.And the mechanical properties of composite material were introduced.And the three-dimensional model of knuckle was established in the HyperMesh software,which was conducted the static and mode analysis.The weight coefficient was determined by the orthogonal experiment method which exposes the problem of original design.Then the multi-objective optimization was conducted for the knuckle,but the low flexibility problem was not settled.And the strengthen of carbon fiber came to mind and built the optimization model and finally got a satisfied results.The 5^th chapter focused on the optimization of stator supporting frame.The full carbon fiber model was established in the software.And the topology optimization of highly orthotropic composite material was studied.The comprehensive objective optimization function was defined using the orthogonal test and meet the requirement of weight after the optimization.Finally the in-wheel motor supporting frame was conducted stress and mode experiments to verify the accuracy of simulation.