摘要
模拟常见的纸张撕裂现象是薄片形变模拟算法中的一种重要应用.这里提出了一种基于薄片揉皱模型的撕裂模拟算法.该算法使用揉皱张量场模型作为撕裂形变模拟的输入数据来引导裂缝的生长,在每一步迭代中准确地更新一个反映薄片内各点处的张量场并执行动态的重网格化,制作出了真实的纸张裂缝与三维褶皱效果.该算法能在数秒内得到最终模拟结果,实验证明该算法可以逼真地生成揉皱纸张受到外力作用下的撕裂效果图.
Tearing paper is commonly seen in our daily life.Simulating this effect is an important application of thin sheet deformation.Existing approaches only research the cracking effect on normal flat paper.Our work aims at physically simulating tearing papers that have been crumpled by external forces.To achieve this effect,the crumpling tensor field was used as a guidance to grow the cracking paths using external force in an iterative manner.In each step,aphysical measurement field defined over the planar domain of paper was updated.A triangular mesh representing the paper was dynamically restructured.Experiments show that the proposed approach generates realistic paper tearing effect with randomly shaped cracking path and physically-plausible cracking details.
基金
国家自然科学基金(61303147)
中国科学技术大学青年创新基金资助
