基于振动力和风力作用的服装仿真研究

发布时间：2018-01-09 06:26

本文关键词：基于振动力和风力作用的服装仿真研究　出处：《西南交通大学》2016年硕士论文　论文类型：学位论文

【摘要】：近年来,虚拟现实技术已经广泛应用到各行各业,在服装领域的应用研究备受关注。虚拟人服装动画能够模拟服装模型跟随虚拟角色的肢体动作产生相应的运动、变形等三维动画效果,随着三维技术的不断发展和广泛应用,三维虚拟服装动态仿真逐渐成为虚拟现实领域研究的热点和难点。在动漫影视、3D网络游戏、虚拟试衣和虚拟时装表演等领域中,我们可以感受到三维服装带给我们的强烈视觉效果。三维服装的深入研究不仅具有广阔的应用前景和经济价值,还可以促进和推动相关学科的发展和创新。为了真实地模拟服装在外力作用下的动态效果,本文提出了一种基于四元数产生振动运动的方法。该方法首先利用椭圆的参数方程,自上而下逐层的快速构造服装模型,接着为模型添加质点-弹簧结构,服装最上两层质点的相对位置保持不变,弹簧的弹性系数非线性逐层变化。然后利用四元数的旋转特性实现裙子顶层质点的旋转,并给出了由服装顶层质点产生振动运动的过程。最后通过定义两个四元数分别控制振动运动的幅度和频率,振动力的作用可以通过弹簧自上向下传递,调节不同的仿真参数,仿真出裙子在振动力下的动态效果。本文实现服装在振动力和风力作用下的动态效果。首先对布料的动态仿真进行研究；接着利用参数方程快速构建裙子模型,然后对其添加质点-弹簧模型,添加重力、振动力、风力的作用；最后,利用欧拉积分更新质点位置、速度等信息,仿真出一系列外力作用下裙子的动态效果,实现动态服装快速逼真的仿真。
[Abstract]:In recent years, virtual reality technology has been widely used in various industries. The virtual human clothing animation can simulate the clothing model to follow the body movement of the virtual character to produce the corresponding movement, deformation and other three-dimensional animation effects. With the continuous development and wide application of 3D technology, 3D virtual clothing dynamic simulation has gradually become a hot and difficult point in the field of virtual reality. In the field of virtual fitting and virtual fashion show, we can feel the strong visual effect brought to us by 3D clothing. The in-depth study of 3D garment not only has broad application prospect and economic value. It can also promote and promote the development and innovation of related disciplines, in order to simulate the dynamic effect of clothing under external force. This paper presents a method to generate vibration motion based on quaternion. Firstly, using the parameter equation of ellipse, the clothing model is constructed layer by layer from top to bottom, and then the mass-spring structure is added to the model. The relative position of the top two layers of the garment remains unchanged, and the elastic coefficient of the spring changes nonlinearly layer by layer. Then, the rotation of the top mass of the skirt is realized by using the rotation characteristic of the quaternion. Finally, by defining two quaternions to control the amplitude and frequency of vibration motion, the effect of vibration force can be transmitted from top to bottom by spring. The dynamic effect of skirt under vibration force is simulated by adjusting different simulation parameters. In this paper, the dynamic effect of clothing under the action of vibration force and wind force is realized. Firstly, the dynamic simulation of cloth is studied. Then the skirt model is constructed quickly by using the parameter equation, and then the mass-spring model is added to it, and the effects of gravity, vibration force and wind force are added. Finally, the dynamic effect of skirt under a series of external forces is simulated by using Euler integral to update the information of particle position and speed.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TP391.9;TS941.1

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