摘要
结合工程应用对圆锥段等螺距螺旋筋网格结构、等螺旋角螺旋筋网格结构及短程线螺旋筋网格结构的强度进行了对比计算。结果表明,在网格结构参数相同的情况下,这三种螺旋筋网格结构承载能力大体相当。可根据工程实际,从工艺简单、制作成本低的角度选择成型工艺。利用锥面螺旋线及椭球面短程线非平面曲线的特点,精确计算双封头短程线螺旋筋复合材料网格结构纤维丝束缠绕轨迹,实现纤维丝束不重不漏连续自动化缠绕成型,提高结构成型质量和一致性,提高节点处质量及承载能力。计算出大端相对的两件短程线螺旋筋复合材料网格结构纤维丝束缠绕轨迹,可节省材料,提高生产效率。
Combined with engineering applications,a comparative calculation was conducted on the strength of the grid structures with equal-pitch spiral ribs,equal-helix-angle spiral ribs and geodesic spiral ribs on cone section.The results show that under the condition of identical grid structure parameters,the load bearing capacities of three spiral rib grid structures are roughly equivalent.Therefore,the forming process can be selected based on engineering practice from the perspectives of simple process and low manufacturing cost.Taking advantage of the characteristics of non-planar curves of the conical spiral and the ellipsoidal geodesic,the fiber tow winding trajectories of the double-head closure composite grid structure with geodesic spiral ribs are accurately calculated,which realizes the continuous and automated winding forming of fiber tows without overlapping or omission,improves the forming quality and consistency of the structure,and enhances the quality and load-bearing capacity at the nodes.The calculation of the fiber tow winding trajectories for two opposite large-end composite grid structures with geodesic spiral ribs save materials and improve production efficiency.
作者
提亚峰
谢金鑫
王易南
黄玉清
王群
TI Yafeng;XIE Jinxin;WANG Yinan;HUANG Yuqing;WANG Qun(Beijing Institute of Aerospace Systems Engineering,Beijing 100076;Aerospace Research Institute of Materials&Processing Technology,Beijing 100076)
出处
《宇航材料工艺》
北大核心
2026年第1期16-19,共4页
Aerospace Materials & Technology
关键词
锥面复合材料斜置网格结构
强度计算
缠绕轨迹计算
Conical composite oblique grid structure
Strength calculation
Winding trajectory calculation
