Research On Topology Optimization Of Design Related Loads And Brake Design Method

With the advent of a new generation of industrial revolution,the fields of transportation,aerospace,civil engineeri ng and mechanical structures including their manufacturing processes have put forward higher requirements for the performance of related structures,especially the perfor mance of structures under lightweight design.The topology optimization design method has been widely used in many structural design-dependent industries due to its unique characteristics of free topology design.For the optimization of continuum structure,many different theories and methods have emerged in topology optimization,each with its own advantages in solving problems.On this basis,the topology optimization method has developed an extension suitable for complex working conditions to meet the ne eds of design-dependent loads conditions,multi-working,multi-material and multi-disciplinary optimization design.Research on topology optimization under design-dependent loads has always been the focus and difficulty of scholars,and it is still necessary to continue research and exploration.At the same time,research in the engineering application of topology optimization design methods is becoming more and more important,showing unprecedented potential and value.This paper focuses on the related pro blems of continuum structure topology optimization design and the design method of brake structure.The problems of topology optimization method in basic theory,design related load condition s and brake structure design were studied.The research on topology optimization methods was mainly carried out from the following aspects:(1)The parasitic effect of the structure in the low-density area under the design-dependent load conditions and its solution strategy were studied.The solution strategy of adding non-structural mass in low-density areas was proposed to improve the convergence of numerical calculations in this area.The influence of the mass point and its size on the optimization results under this strategy was studied,and the appropriate size of the non-structural mass was finally determined,which is verified by simulation calculation.(2)A topology optimization design model of dry multi-disc brake support structure was established,and the desi gn of brake support structure was studied by using topology optimization method.The braking working conditions of the brake supporting structure were extracted through theoretical analysis,and the working conditions,boundary conditions and structural models were simplified to improve the efficiency of the optimization calculation.Set up key nodes at the positions where the deformation needs to be optimized,and construct the objective function of topology optimization by extracting the displacement information to realize the optimal design of the topology structure with the least deformation.Use the topology optimization result as a reference for model modification and reconstruction,and through the adjustment of relevant characteristic parameters,an optimization model of the brake support structure that meets different design requirements was obtained.