摘要
三维编织复合材料广泛应用于航空、航天、军工等领域的异型结构件中,为保证结构件质量,需要进行多次试制,验证编织工艺的有效性。提出一种基于模型重构算法的异型结构件通用编织模拟方法,解决编织工艺参数难以仿真验证的问题。首先,基于模型数据提取异型结构件芯模中心线,根据模型轮廓二次生成芯模关键截面,对模型进行网格重构;其次,基于运动学特性生成织物在芯模表面轨迹,分析编织过程的交织关系,优化纱线轨迹,生成预成型体空间拓扑与织物结构模型;最后,根据编织试验验证本文编织方法的精度,变截面与变曲率处误差不超过5°,满足实际生产要求。本方法可整合入编织装备CAE集成系统,为复合材料的工艺数字化验证提供有效的解决方案。
Three-dimensional braided composite materials are widely used in special-shaped structural parts in aviation,aerospace,military and other fields,but in order to ensure the quality of structural parts,it is necessary to carry out multiple trial productions to verify the effectiveness of the braiding process,which brings high costs.To address the challenges of high validation costs and prolonged optimization cycles in braiding parameter verification,this study proposed a universal simulation approach for special-shaped braided structures based on model reconstruction algorithms.Firstly,the centerline of the mandrel of the special-shaped structural parts was extracted based on the model data,and the key sections of the mandrel were regenerated based on the model outline,and the mesh of the model was reconstructed.Secondly,based on the kinematic characteristics,the fabric trajectory on the surface of the mandrel was generated,the interweaving relationship of the braiding process was analysed,the yarn trajectory was optimized,and the spatial topology and fabric structure model of the preform were generated.Finally,according to the braiding experiment,the accuracy of the method proposed in this paper is verified,and the error at the variable cross-section and variable curvature is not more than 5°.This innovative approach demonstrated strong compatibility with CAE integration platforms for braiding equipment,offering an efficient digital verification solution for composite manufacturing processes.
作者
崔博
阳海棠
李麒阳
俞建勇
CUI Bo;YANG Haitang;LI Qiyang;YU Jianyong(Innovation Center for Textile Science and Technology,Donghua University,Shanghai 201620,China;College of Physics,Donghua University,Shanghai 201620,China;AVIC Chengdu Aircraft Industrial(Group)Co.,Ltd.,Chengdu 610091,China;College of Mechanical Engineering,Donghua University,Shanghai 201620,China)
出处
《航空制造技术》
北大核心
2025年第7期14-21,共8页
Aeronautical Manufacturing Technology
基金
“纺织之光”应用基础研究计划(J202202)。
关键词
三维编织
复合材料
编织模拟
模型重构
预测模型
Three-dimensional braiding
Composite materials
Braiding simulation
Model refactoring
Predictive models
