Research on heat dissipation optimization design of heat transfer structure based on uniform temperature field

Because of the increasing influence of thermal deformation on the machining accuracy numerical control (NC) machine tools, a heat conduction structure heat dissipation topology optimization method was proposed based on the homogenization of the temperature field and topology optimization. Select the temperature mean-square error (MSE) and structural compliance as the optimization target, and take into account the thermal load design correlation, a multi-objective topology optimization model was constructed by the weighted normalization method. Using the solid isotropic material with penalization (SMIP) and adjoint matrix method, the sensitivity and iterative formula of the multi-objective topology optimization model were derived and analyzed. And used the optimality criteria (OC) algorithm to solve the problem. A verification example considering the design correlation of thermal loads was given, and qualitative analysis was given on the value of the weight coefficient of the weighting method from the perspective of the optimal solution and convergence speed. A numerical example and comparative analysis results show that the algorithm in this paper was feasible and accurate.