title: Three-dimensional optimum design of the cooling lines of injection moulds based on boundary element design sensitivity analysis
abstract: A three-dimensional numerical simulation using the boundary element method is proposed, which can predict the cavity temperature distributions in the cooling stage of injection moulding. Then, choosing the radii and positions of cooling lines as design variables, the boundary integral sensitivity formulations are deduced. For the optimum design of cooling lines, the squared difference between the objective temperature and temperature of the cavity is taken as the objective function. Based on the optimization techniques with design sensitivity analysis, an iterative algorithm to reach the minimum value of the objective function is introduced, which leads to the optimum design of cooling lines at the same time
keyphrases: optimization injection moulding boundary element method cavity temperature distributions cooling stage objective function iterative algorithm 3D numerical simulation boundary integral sensitivity analysis heat conduction