RFI中改性BM I树脂浸渍过程的数值模拟.PDF

2010 12 December 2010 29 12 M echanical Science and Technology forA erospace Engineering Vol. 29 No. 12 RFI BM I 刘运芳, 聂玉峰, 李都宁, 梁 滨 ( , 710129) : 为了研究树脂膜溶渗( resin film infusion, RFI)工艺中树脂的浸渍规律, 研制高性 复合材 料, 首先建立了 130 e 下改性双马来酰亚胺 (bismalemi ide, BM I)树脂随时间变化的粘度拟合模型, 然后采用有限元 /控制体法以及相关实验数据, 对带加强筋复合材料板在 130 e 等温下的RFI成型 工艺改性BM I树脂浸渍过程进行了数值模拟, 预测了树脂浸渍过程前沿位置压力分布浸渍时间 和树脂浸渍高度最后通过模拟发现整个树脂浸渍前沿几乎同时向前推进, 浸渍过程前期快后期 慢, 环境压力越大浸渍高度越高, 但是浸渍高度有渐近值等现象 : RF I; 改性 BM I树脂; 浸渍过程; 数值模拟; 有限元法 : TB33; O24 : A : 1003 8728( 2010) 12 1646 05 Num erical Sim ulation ofM odified B ism aleim ide R esin in the R esin F ilm Infusion Process Liu Yunfang, N ie Yufeng, LiDuning, Liang Bin ( School of Science, Northw estern Polytechn icalUn iversity, Xican 710129) Abs tract: In order to study the resin infusion during the resin film infusion( RFI) process formanufacturing high performance compositematerials, a viscosity tmi e fitted model is established to describe the modified bismalemi ide ( BM I) resin viscosity under 130 e degree. Then, a partial differential equationmodel is applied to smi ulating the resin infusion ofRFI process for the bladed stiff composite plate under 130 e degree. The finite element/control vol ume method and the relevant expermi ental data are used to track themovement of the resin flow front, and to predict the pressure distribution, infusion tmi e and infusion height. The data obtained from the numerical smi ulations show that the whole resin front promotes almost smi ultaneously, the infusion process is quicker at the earlier period, and the infusion height is higherwhen the environment