骨架驱动的快速似然弹性变形

为能实现骨架驱动弹性体的快速变形，提出了一种新方法，它是通过构造和求解扩散微分方程，从骨架采样点旋转得到单元的旋转特征向量，进而得出旋转四元数经验预测公式直接构造计算域内单元旋转场．实验结果表明，文中的模拟系统在静力学模拟中，避免了繁琐的变形子步划分，提高了计算速度．在动力学模拟中，允许使用更大的求解时间步长，增强了变形系统的求解稳定性．同时，对于骨架关节点区域变形的模拟，较大程度地降低了用户的干预，取得了合理的效果．

Fast and Physical Plausible Elastic-Deformation Driven by Skeleton

In order to obtain fast deformation of elastic body driven by skeleton, the authors propose a novel method which estimates finite elements rotation by diffusing from sampling points in attached skeleton structure and using the empirical formula of rotation quaternion. In calculating deformation based on the static equation, the proposed method can greatly accelerate computing of deformation without fussy sub-step calculation, while it can make the whole solution more stable in kinetics calculation. Moreover, around the area of joint, the method can reduce the user interaction and obtain rational results.