二步法三维编织变截面薄壁壳体RTM 工艺数值模拟与试验研究

基金项目: 天津市自然科学基金资助项目(023604811)

详细信息

NUMERICAL SIMULATION AND EXPERIMENTAL STUDY OF RESIN FLOW IN RTMPROCESSING FOR TWO STEP 3D BRAID SHELL PREFORM WITH VARYINGSECTION

Composites Research Institute of Tianjin Polytechnic University, Tianjin 300160, China

摘要

摘要: 采用分段-集合计算方法, 对二步法三维编织变厚度变截面薄壁壳体RTM 充模工艺过程进行了较深入的理论研究。提出了较准确的树脂流动速度、树脂充模时间和树脂流动压力计算方程。数值预测值与充模试验结果具有良好的一致性, 所推导理论方程为合理设计RTM 充模工艺参数提供了理论依据。
- 复合材料 /
- 二步法三维编织 /
- RTM /
- 分段-集合计算方法 /
- 数值模拟
Abstract: The filling process of RTM for the two step 3D braid shell preform with a varying section was investigated theoretically by employing a calculating method of divide-integration. Several formulations related to the resinvelocity, resin filling time and resin flow pressure were proposed accurately. Good agreement was found between theexperimental result s and numerical predictive values. The deduced formulations could provide the theoretical basisfor suitably designing RTM filling parameters.
- composites /
- two step 3D braiding /
- RTM /
- divide-integration method /
- numerical simulation