| 摘要: |
| 针对三维服装造型与效果仿真中存在的模型复杂、模拟效率低、忽略服装的结构特征等问题,提出了改进的弹簧-质点模型.利用该模型统一建立了2D→3D映射和服装真实感模拟方程,给出方程中质点所受内力和外力的组成与表达式以及动态系统的推导和求解过程,并且描述了模拟的具体实现算法.改进的弹簧-质点模型克服了原有模型对服装织物的材料性能表达单一的缺点,考虑了拉伸、剪切、弯曲等力学性能以及省/褶等结构因素对服装外观的影响,实现了较复杂的服装外型.通过从效率与效果两个方面与其他模拟系统进行比较,发现该技术的模拟效率较高而且模拟结果较为真实.该模拟技术已经在服装企业推广应用,用户反映良好. |
| 关键词: 织物造型 仿真 弹簧-质点模型 计算机辅助三维服装设计 |
| DOI： |
| 分类号: |
| 基金项目:5Supported by the Grand Research Foundation of National Planning Commission of China (国家计委重大项目) |
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| Simulation of 3D Garment Based on Improved Spring-Mass Model |
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LIU Hui,CHEN Chun,SHI Bai-Le
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| Abstract: |
| Some problems still exist in 3D garment modeling and simulation, including that the model is complex, the efficiency is low, and the structural characteristics of garment are ignored. An improved spring-mass model is proposed, by which 2D→3D transformation and simulation of garment are formulated unifiedly. The dynamic system of modeling and simulation is derived and solved using time differentiate method, with given composition and expression of internal and external cloth forces in the formulation. And then the simulation algorithm is described. Overcoming the serious weakness representing cloth properties simply of previous model, the improved mass-spring model considers mechanical properties of cloth such as stretching, shearing and bending. Structural characteristics of garment such as dart and pleat are took into account too, thus complex garment pattern can be modeled and simulated. Compared the efficiency and the effect of simulation with other simulation systems, the resulting simulation system is faster and more realistic. The technique has been used in some garment enterprises and gets well responses. |
| Key words: cloth modeling simulation spring-mass model computer-aided garment design |
