圆锥面等测地曲率曲线的轨迹规划方法
发布时间：2018-11-27 07:55
【摘要】：为解决复合材料锥壳铺放过程中的纤维残余应变过大的问题,提出了等测地曲率曲线的轨迹规划方法。通过分析发现轨迹的测地曲率决定了纤维的残余应变,于是通过计算圆锥上任意曲线的测地曲率推导出了等测地曲率曲线的表达式,并证明在圆锥展开面上等测地曲率曲线是圆弧。最后,通过计算等测地曲率轨迹的残余应变及其与圆锥母线的夹角分析该轨迹铺放工艺性。结果表明:等测地曲率轨迹相较于固定角轨迹与测地线轨迹具有良好的可设计性和铺放工艺性。
[Abstract]:In order to solve the problem of excessive residual strain of fiber during the laying of composite conical shell, a trajectory planning method of isometric curvature curve is proposed. It is found that the geodesic curvature of the track determines the residual strain of the fiber, so the expression of the isometric curvature curve is derived by calculating the geodesic curvature of any curve on the cone. It is proved that the curve of isobaric curvature on the cone expansion surface is a circular arc. Finally, the residual strain of the geodesic curvature trajectory and its angle with the cone busbar are calculated to analyze the placement process of the trajectory. The results show that the iso-geodesic curvature trajectory has good designability and laying technology compared with the fixed angle trajectory and geodesic trajectory.
【作者单位】： 南京航空航天大学材料科学与技术学院;
【基金】：“高档数控机床与基础制造装备”科技重大专项(2016ZX04002-001) 江苏高校优势学科建设工程资助项目~~
【分类号】：O186.1
本文编号：2359958
[Abstract]:In order to solve the problem of excessive residual strain of fiber during the laying of composite conical shell, a trajectory planning method of isometric curvature curve is proposed. It is found that the geodesic curvature of the track determines the residual strain of the fiber, so the expression of the isometric curvature curve is derived by calculating the geodesic curvature of any curve on the cone. It is proved that the curve of isobaric curvature on the cone expansion surface is a circular arc. Finally, the residual strain of the geodesic curvature trajectory and its angle with the cone busbar are calculated to analyze the placement process of the trajectory. The results show that the iso-geodesic curvature trajectory has good designability and laying technology compared with the fixed angle trajectory and geodesic trajectory.
【作者单位】： 南京航空航天大学材料科学与技术学院;
【基金】：“高档数控机床与基础制造装备”科技重大专项(2016ZX04002-001) 江苏高校优势学科建设工程资助项目~~
【分类号】：O186.1
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