各向异性织物建模与仿真-计算机应用技术专业论文.docxVIP

浙江大学硕 1:学位论文 Abstrωt Abstract The simulation of fabric defonnation has been a hot research topic in ωmp川er graphics since 1980. Mass.Spring system，which is easy to understand and implement， is widely used in Cloth Simulation. However咱也e model only considers the physical characteristics of isotropic fabric，and would easily leads to the super.elastic effect during the simulation，which would lower the reality of the simulation results. Considering the specific requirements of Cloth Simulation，this 也.esis analyzes the physical characteristics of the fabric，and uses an anisotropic cloth model，which is based on the classic MassSpring system，to meet the requirements. In the anisotropic model，we use the semirigid rods，take ful1 consideration of the fabric tensile， compression ，shear，bending and surface roughness ，effectively solve the anisotropy and super.elastic issues of Cloth Simulation，and improve the reality of the simulation results. Cloth Simulation involves numerical integration of equation of motion and a large number of collision handling，which are the bottleneck of the simulation efficiency. In order ωimprove the efficiency and stabi1ity，we use 伽.e Verlet integration method， instead of the general explicit Euler in the numerical integration section. We also make a simplification in the collision model，only considering two types of collision model ， Point.Triangle model and edge.edge model，to reduce the number of col1ision handling and speed up the calculation. Finally，a cloth simulation system based on 址le anisotropic cloth model ，Verlet method and collision handling is developed.ηle simulation results of curtains under the constant wind and the drape of the table cloth shows that our system is able to effectively simulate fabric anisotropy and folds. Keywords: Mass.Spring ，Cloth Simulation，Semirigid rods，Anisotropy 11 浙江大学硕1:学位论文 fb鼓 目录 摘要…………………………. i Abstract 第 1 章绪论……………………………..，… 1 1.1 织物仿真发展历史与现状……………………….. 1 1.1.1 纺织工业织物模型叫………………·