摘要
真空导入成型工艺(VIMP)广泛应用于复合材料游艇艇体制造,然而其浇注系统在工程上仍然主要根据经验或多次试验来设置。论文基于数值模拟技术,对游艇艇体VIMP工艺浇注系统的优化方法进行了研究。通过对充模过程和流道布置方式的分析,提出了流道布置方案评价方法;通过对四种不同流道布置方式的树脂充模过程进行仿真,确定了最佳的流道布置方式。研究了游艇艇体VIMP工艺浇口位置优化方法,确定了优化目标和优化参数,建立了优化浇口位置的数学模型;并通过一系列的树脂充模过程模拟,仿真拟合出浇口位置优化目标函数的具体形式,进而获得浇口位置的最优值。数值分析结果同时表明:仅采用增加浇口数量的方法,达不到既能降低充模时间同时又能避免充模缺陷的目的。
Vacuum infusion molding process （VIMP） is widely used to manufacture yacht hull. Pouring system in the process has a key influence On filling time, process cost and hull quality, but it is usually designed with experience and lots of experiments. In this paper, optimization method of the pouring system in VIMP for composite yacht hull was studied. An evaluation method for runner layout pattern was proposed after analyzing the filling process and the frequently-used runner layout patterns. Then filling process simulations for four runner layout patterns were implemented and the best runner layout pattern was determined. Optimization method for gate location of VIMP was studied; a mathematical model for optimizing the gate location was established after determining the optimal objective and optimal parameters. Concrete form of the object function for gate location optimization was determined after a series of simulations, and then the optimal gat6 location was obtained. The simulations also showed that it was inadvisable to reduce the filling time just by adding the quantity of gates.
出处
《中国造船》
EI
CSCD
北大核心
2013年第1期213-221,共9页
Shipbuilding of China
关键词
游艇
VIMP
浇注系统
优化
数值模拟
yacht
VIMP
pouring system
process optimization
numerical simulation
