摘要
为了避免理想化织物模型横截面恒定、纱线间相互渗透的问题,生成具有真实感的二维机织物三维细观模型,提出一种基于自由变形技术的几何变形方法。首先通过理想化的纱线中心线轨迹、横截面建立织物初始几何模型,然后应用自由变形技术对纱线进行变形。在变形过程中,所有纱线横截面在空间位置和参数的约束下进行自由变形,所有横截面变形后的控制网格组成纱线的控制网格,以驱动纱线的整体变形,最终生成具有真实感的织物细观模型。变形过程中纱线间的接触应用基于射线的碰撞检测技术处理。该方法可以扩展并应用于其他织物结构,且可以输出到其他软件中进行模拟计算。
In order to avoid the problems of constant cross-section and interpenetration between yarns in the idealized fabric model and generate a realistic three-dimensional meso-model of two-dimensional woven fabric,a geometric deformation method based on free deformation technology was proposed.Firstly,the initial geometric model of the fabric was established through the idealized yarn centerline trajectory and cross-section,and then the free-form deformation technology was applied to deform the yarn.In the deformation process,all yarn crosssections are free-form to deform under the constraints of spatial position and parameters.The control grid of yarn consists of the control grids after all cross sections being deformed to drive the yarn deformation,and finally a realistic fabric meso-model was generated.The contact between yarns in the deformation process was treated by ray based collision detection technique.This method can be extended and applied to other fabric structures,and can be output to other software for simulation.
作者
高梓越
陈利
赵世波
GAO Ziyue;CHEN Li;ZHAO Shibo(Ministry of Education Key Laboratory of Advanced Textile Composite Materials,Institute of Composite Materials,Tiangong University,Tianjin 300387,China;School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China)
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2023年第1期567-576,共10页
Acta Materiae Compositae Sinica
基金
国家重点研发计划(2019YFC0311802)
国家科技重大专项(2017-VII-0011-0177)
天津市高等学校创新团队(TD13-5043)。
关键词
二维机织物
自由变形
细观模型
纱线建模
接触检测
two-dimensional woven fabric
free-form deformation
mesoscopic model
yarn modeling
contact detection
