Study On Lightweight Design Of Heavy Duty Vehicle Disc Brake

With the rapid development of modern logistics industry,the proportion of heavy truck market share is growing.In the brake system,brake disc due to its advantages of small size,good thermal stability and water stability is gradually replacing drum brakes,is widely used in automobile.Entered since twenty-first Century,the world environment worsening,excessive consumption of oil resources,the increasing number of cars not only consume of oil resources and environmental pollution,so the development of energy-saving emission reduction technology has become a priority among priorities of major automobile manufacturers.Automobile lightweight can not only reduce the weight of the car,but also has important significance for energy saving and emission reduction.As a brake device of the vehicle,the design of disc brake is very necessary.Based on the analysis of the structure of a heavy duty vehicle disc brake,the main parts of this paper are determined.The three-dimensional geometric model of disc brake is established by using CAD software UG,and the geometric model is composed of a brake disc,a caliper body,a brake block,a brake block backboard and a bracket.The geometric models of the main parts of this paper are imported into the CAE software Hyper Mesh,the finite element model is established and the simulation analysis and modal analysis are carried out.According to the calculated displacement nephogram and stress nephogram,the topology optimization is carried out based on the OptiStruct module.Finally,the optimized geometry model is established by UG software,and then it is imported into the HyperMesh software to establish the finite element model.According to the calculated displacement optimization of clamp body shell and the bracket and the stress nephogram indicates that the optimized model in stiffness to meet the performance requirements,according to the modal analysis of the model with 10 modes of frequency analysis shows that optimization of the model structure is more in line with the requirements of.After comparing the optimized disc brake with the original disc brake,the total quality is reduced to a certain extent while the performance is satisfied.Theresearch method of this paper lays a solid foundation for the future research on lightweight design of automobile.