帽形加筋壁板共固化用硅橡胶芯模孔占比对维形传力效果及壁板成型质量的影响  

Influence of silicone rubber core mold hole occupancy ratio on dimensional shape force transfer effect and wall panel molding quality for co-curing of hat-shaped reinforced wall panels

作　　者：周洁 赵聪 周来水[1] ZHOU Jie;ZHAO Cong;ZHOU Laishui(Mechatronics,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学机电学院,南京210016

出　　处：《复合材料科学与工程》2025年第2期62-69,共8页Composites Science and Engineering

基　　金：国家自然科学基金青年基金项目(52005257)。

摘　　要：为满足帽形加筋壁板共固化成型过程中固化压力的均匀传递,实现制件良好的厚度均匀性和型腔高度,对帽形加筋壁板成型工艺辅助芯模进行改进,提出一种设置梯形预制孔的硅橡胶薄壁芯模与真空袋组合的新型柔性芯模。利用有限元仿真方法,研究了不同孔占比的硅橡胶薄壁芯模对帽形加筋壁板共固化成型过程中的压力传递均匀性的影响,并对固化后帽形加筋壁板成型精度进行了分析。结果表明:当硅橡胶薄壁芯模预制孔孔占比为0.68~0.84时,硅橡胶薄壁芯模膨胀适中且均匀,能够实现压力的均匀、稳定传递,同时保证帽形加筋壁板外形准确度。最后,通过实验方法验证了硅橡胶芯模热膨胀有限元模拟的正确性,为实现硅橡胶芯模辅助帽形加筋壁板成型厚度均匀性开创了工艺窗口。To meet the hat-shaped reinforced wall panel co-molding process of curing pressure uniform transmission,to achieve good thickness uniformity and cavity height of the parts,the hat-shaped reinforced wall plate molding process auxiliary core mold to improve,put forward a set of trapezoidal prefabricated holes in the silicone rubber thin-walled core mold-vacuum bag combination of new flexible core mold.Using the finite element simulation method,the effects of silicone rubber thin-walled core molds with different hole occupancy ratios on the uniformity of pressure transfer during the co-curing molding process of hat-shaped reinforced wall panels were investigated,and the molding accuracy of hat-shaped reinforced wall panels after curing was analyzed.The results show that:when the silicone rubber thin-wall core mold prefabricated holes in the proportion of holes between 0.68~0.84,the silicone rubber thin-wall core mold expansion is moderate and uniform,can realize the uniformity and stability of the pressure transfer,and at the same time to ensure that the hat-shaped reinforced wall plate shape accuracy.Finally,the correctness of the finite element simulation of the thermal expansion of the silicone rubber core mold was verified by experimental methods,which created a process window for achieving the uniformity of the thickness of the silicone rubber core mold-assisted hat-shaped reinforced wall plate molding.

关 键 词：CFRP帽形加筋壁板 共固化 柔性组合芯模 预制孔 维形传力 

分 类 号：TB332[一般工业技术—材料科学与工程]