Glare层板基本成形性能研究与实验验证

发布时间：2018-05-29 17:15

本文选题：复合材料 + Glare层板　；参考：《航空材料学报》2017年01期

【摘要】：为了探索Glare层板的成形性能特点,采用单向拉伸实验和三点弯曲实验,分析研究了Glare 2A,Glare 2B和Glare 3层板的基本成形性能,并借助扫描电子显微镜分析了Glare层板的失效特征。结果表明:纤维铺层方向对材料的成形性能存在显著影响,Glare 2A层板抵抗塑性变形的能力强,且难以发生厚向变形:采用σ=σy+Kεn硬化模型拟合真实应力-应变曲线,其相关系数最大,拟合结果最好:Glare 2A的弯曲回弹量最大,其弯曲破坏时,内表层受压应力,以皱缩和压缩断裂为主,外表层受拉应力,以纤维拉伸断裂和分层为主;对于Glare 2B层板,其弯曲回弹量最小,主要以基体破坏为主:通过滚弯成形验证了实验所得结果的准确性。
[Abstract]:In order to explore the formability characteristics of Glare laminates, the basic formability of Glare _ 2Ag-Glare _ 2B and Glare _ 3 laminates were studied by uniaxial tensile test and three-point bending test, and the failure characteristics of Glare laminates were analyzed by means of scanning electron microscopy (SEM). The results show that the fiber laying direction has a significant effect on the formability of the material, and the plastic deformation resistance of Glare 2A laminates is strong, and it is difficult to produce thick deformation. The true stress-strain curve is fitted by 蟽 = 蟽 y K 蔚 n hardening model. The correlation coefficient is the largest and the fitting result is the best. When the bending failure occurs, the compressive stress of the inner surface layer is mainly shrinkage and compression fracture, and the tensile stress of the outer layer is mainly the fiber tensile fracture and delamination. For Glare 2B laminates, the flexural springback is the smallest and the matrix failure is the main factor. The accuracy of the experimental results is verified by rolling forming.
【作者单位】：南京航空航天大学材料科学与技术学院;上海飞机制造有限公司;
【基金】：国家商用飞机制造工程技术研究中心创新基金资助项目(SAMC 13-JS-15-032) 江苏省普通高校研究生科研创新计划资助项目(KYLX_0259) 江苏省先进结构材料与应用技术重点实验室开放基金资助项目(ASMA201401) 国家级大学生创新创业训练计划资助项目(201510287033) 江苏高校优势学科建设工程资助项目(PAPD)
【分类号】：TB333

【相似文献】