注射模冷却系统三维优化设计

Three Dimentional Optimum Design of Cooling Lines for Injection Mold

针对注射模三维冷却系统，以修正的三维边界元法为基础给出型腔表面温度的计算方法。在此基础上，以冷却管道线单元节点和冷管半径为设计变量，通过构造边界积分灵敏度方程得到型腔温度对设计变量的灵敏度。在优化设计中，以型腔表面各点温度与某一设定目标温度的均方差为目标函数，在一定的约束条件下，通过寻求目标函数的最小值求出冷却管道的优化位置和尺寸，并用实例进行验算。

According to the modified boundary element method for three dimension,a calculation method for cavity temperatures is proposed. Furthermore, choosing the cooling line radius and joints as design variables, the boundary integral design sensitivity formulations are given. For the optimum design of cooling lines,the squared difference of the object temperature with the temperatures at each point of cavity surface is taken as object function. Based on the optimization technique, an iterative algorithm to calculate the minimum value of the object function is proposed. Throuth the optimization of a spatial construction of cooling lines, this paper proposes a valuable three dimensional optimization method at first. Through verification of example, the optimum design method presented in this paper is effective.