摘要
针对注塑成型的冷却过程，以边界无法为基础，给出了型腔温度及其对主要设计变量灵敏度的算式。在此基础上，以型腔各点温度与某一设定的型腔目标温度的均方差作为目标函数，利用优化技术给出了求目标函数最小值的选代算法。通过对盒形体注塑静模中冷却管道位置及尺寸进行二维优化设计，证实了本文给出方法的有效性。
Cycle - averaged temperatures of injection mold cavity influence greatly the product quality. For mold cavity which can be approximated as a two dimentional one, we present a boundary element method (BEM ) for calculating its steady state heat conduction problem.For the problem at hand, the BEM consists of mainly two formulations: boundary integral and boundary integral design sensitivity. For the optimum design of the arrangement of cooling lines, we take as objective function the squared difference of two temperatures at any point of cavity: (1) the objective temperature; (2) the actual temperature. The objective function is approximated by its first -order Taylor expansion. We propose an iterative algorithm for minimizing the objective function. Numerical simulation results for a cavity approximatable as a 2D one (Fig. 4) show preliminarily the effectiveness of our BEM.
出处
《西北工业大学学报》
EI
CAS
CSCD
北大核心
1998年第4期554-559,共6页
Journal of Northwestern Polytechnical University
