《计算机应用研究》|Application Research of Computers

基于规则网格的层次化布料动态模拟方法

Cloth simulation based on grid-hierarchical dynamic simulation method

免费全文下载 (已被下载 次)  
获取PDF全文
作者 郑华,王美丽,李书琴
机构 西北农林科技大学 信息工程学院,陕西 咸阳 712100
统计 摘要被查看 次,已被下载
文章编号 1001-3695(2019)06-057-1873-06
DOI 10.19734/j.issn.1001-3695.2017.12.0860
摘要 在布料动态模拟仿真过程中,收敛速度和模拟效率是两个核心指标,可以很好地反映布料在动态过程中的模拟效果。针对布料动态模拟中的收敛速度慢、模拟效率低的问题,提出了一种基于规则网格的层次化模拟方法,实现了基于位置的层次化动态模拟。在该方法中,利用层次化思想在原始网格的基础上构建层次化约束网格,可以采用不同的决策函数对网格进行精简,构造出更加满足目标要求的约束网格,在构造完成后利用提出的权值关联模型对各层次进行再矫正。在模拟过程中,原始网格利用层次化约束网格从最粗层到最精细层进行收敛矫正,有效避免了传统为提高收敛速度而单一地增加约束矫正迭代次数的问题。为了检验模拟性能,布料在周期钟摆风场下进行了实验。实验表明,在基于规则网格的层次化方法模拟下,该方法能很好地解决传统模拟的约束振荡问题,并且效率高、稳定性好。
关键词 层次化; 动态模拟; 收敛; 网格层次化; 布料模拟
基金项目 国家自然科学基金资助项目(61402374)
第56批中国博士后科学基金资助项目(2014M562457)
本文URL http://www.arocmag.com/article/01-2019-06-057.html
英文标题 Cloth simulation based on grid-hierarchical dynamic simulation method
作者英文名 Zheng Hua, Wang Meili, Li Shuqin
机构英文名 College of Information Engineering,Northwest A&F University,Xianyang Shaanxi 712100,China
英文摘要 In the process of cloth dynamic simulation, convergence and efficiency are two core indicators, which can well reflect the performance of simulation. To approve the convergence and quality in cloth dynamic simulation, this paper proposed an approach which was based on grid-hierarchical simulation. This method constructed a hierarchical constrained grid on the basis of the original grid using the hierarchical idea. In this process, it used various decision functions to streamline the grid to adapt different target requirements. After completing the construction, this paper used the proposed weighted association model to rectify each level. In the process of simulation, the proposed approach used hierarchical constraint grid to constrain the origi-nal grid from the coarse layer to the finest layer to improve the convergence speed, which effectively avoided the problem of increasing the number of iterations in the traditional way. To show the simulation performance, this paper simulated dynamic cloth under the cycle pendulum wind field. The results show that under the simulation of grid-hierarchical method, it can well solve the constraint oscillation problem of the traditional simulation, and the proposed method is more efficiency and stable.
英文关键词 hierarchical; dynamic simulation; convergence; grid-hierarchical; cloth simulation
参考文献 查看稿件参考文献
 
收稿日期 2017/12/18
修回日期 2018/3/9
页码 1873-1878,1882
中图分类号 TP391.7
文献标志码 A