The Weight Lighting Design And Non-linear Analysis For The Hand Brake Assembly

In this paper, the objective and significance of the research are introduced. The general development of domestic and international lightweight research are analyzed, also there is an introduction of the recent research of domestic and international non-linear mechanical theory. Then the main subject is highlighted based on the above analysis, and the common solution of system of nonlinear equations is analyzed, also the paper has shown the validity of this method, the advantages and disadvantages of these methods to solve non-linear numerical problems are comparedUsing the 3D Software, the nonlinear FEA model of the assembly of the hand brake is established; then various components of assembly and their mechanical characters are illustrated in detail; based on the design criterion requirements of the assembly of the hand brake, nonlinear FEA model of the assembly of the hand brake is established, the simulation of the eight tests are done; finally the method and measure to improve the quality of the handbrake are proposed. Based on the linear optimization theory and nonlinear calculation theory, the study of assembly is given, and the lightweight design research of the assembly of the hand brake is presented.The nonlinear FEA model of the assembly of the hand brake the model is imported in the finite element analysis software of ABAQUS to set up the nonlinear finite element analysis model for the assembly of the hand brake. In this process, first simplify the model to neglect some small components, which have little contribution to the assembly strength stiffness; then select the unit type and material type, make some analysis; finally install load steps with some nonlinear factors, complete the nonlinear finite element model.With the computational analysis, the stress and deformation of the assembly is presented. With the consideration of the strength margin, structural characteristics and the optimization potential, the optimum design of the components of assembly is determined. Then the lightweight analysis of steadier of assembly is done by using topology optimization. In establishing the topology optimization model, the simplification of the model, the selection of the optimized regions, the determination of load condition and the settings of optimization parameter are included. In this topology optimization model, the structure of its minimum flexibility (also the maximum stiffness) is used as the objective function and the volume of surplus material after optimality analysis is considered as the constraint, finally the model is completed. Besides, as the selection of the optimized region is given twice, and there are two different optimization results. Therefore, the final selection of optimization result is analyzed with these following factors to optimize: Lightening effect, manufacturability, manufacturing process and treatment for manufacture is done.The nonlinear FEA model of the steadier and other components of assembly are re-established after the above treatment. With some calculation again, the stress and deformation of assembly is available. The change of stress and displacement of the assembly are paid much more attention compared with the first time. Through the checking computations, the new frame work of body reduces 40.7% of its weight under the precondition of rigidity and intension, and then it proves the treatment is feasible and the lightening effect is much better, this research has a fine practical significance.