三维编织物结构分析与计算机仿真

【作者】 曹红蓓；

【导师】 徐建成； 王君泽；

【作者基本信息】 南京理工大学 ， 机械设计及理论， 2003， 硕士

【摘要】 本文三维编织物根据四步法和二步法编织工艺，从纱线的力学模型出发，建立了以圆形近似描述纱线的截面形态，以三次B样条曲线近似描述纱线的屈曲形态的织物空间几何模型，利用计算机三维实体造型技术，分别建立各自的编织物实体模型，用来模拟织物内部各纱线的空间位置，完成织物结构仿真。采用三维动画技术完成编织过程的动画仿真，动画显示纱线的运动过程，能够方便直观地观察到各纱线具体走向。 采用虚拟现实语言VRML进行编织物仿真，便于网上信息交流。 这一研究使得产品在编织之前对其编织过程进行动画仿真提供了新的思路。更多还原

【Abstract】 According to three dimension braided composites for braided technology-four-step and technology-two-step procedure, and with reference to theories of braided fabric geometry and force models, a geometric model is built. In this model, the cross-section of thread is described as a circle and thread path as a cubic B-spline. Braided-fabric structures in three dimensions are displayed by using solid-modeling techniques.Furthermore, by emulating the spatial location of yarn as computer 3D model, the yarn trend in three dimensions braided composites is shown conveniently and clearly.This paper offers the new way for braided -fabric structure simulation in three dimensions before braiding.By using virtual modeling language VRML to access simulating braided -fabric structure in three dimensions, the communication of braided composites information on web is easy.更多还原