physically based object withering simulation

ISCAS OpenIR

	physically based object withering simulation
	Liu Youquan; Chen Yanyun; Wu Wen; Max Nelson; Wu Enhua
	2012
会议录名称	Computer Animation and Virtual Worlds
页码	395-406
收录类别	EI ; SCI
ISSN	1546-4261
部门归属	(1) School of Information Engineering Chang'An University Xi'an China; (2) LCS Institute of Software Chinese Academy of Sciences Beijing China; (3) FST University of Macau China; (4) University of California Davis CA United States
摘要	This paper presents a finite element method-based framework for an object withering simulation modeled with heterogeneous material, such as fruits drying or decay. We introduce diffusion procedures for both the moisture content and decay spread, which are solved directly on a tetrahedral mesh representation of the fruit flesh. Then, we use the moisture content to control shrinkage through the initial strain, which is integrated into the Lagrangian dynamic equation, and solved with the finite element method. For the complex structure of the object, another fine triangle mesh is used to represent the skin, and its deformation is solved by a thin shell technique. To couple the motion between different layers of the fruit, a tracking force is used to pull the skin and drive its deformation together with the volume mesh. In comparison with the previous work, our method provides temporally and spatially varying parameters to model the complex phenomena of object withering. Moreover, the water diffusivity can also be given by user input to present various material properties of the cut section and skin-covered area. Our algorithm is easy to implement and highly efficient in generating a realistic appearance for the withering effect. For a medium-scale model, we can achieve interactive simulation. Copyright © 2012 John Wiley & Sons, Ltd.; This paper presents a finite element method-based framework for an object withering simulation modeled with heterogeneous material, such as fruits drying or decay. We introduce diffusion procedures for both the moisture content and decay spread, which are solved directly on a tetrahedral mesh representation of the fruit flesh. Then, we use the moisture content to control shrinkage through the initial strain, which is integrated into the Lagrangian dynamic equation, and solved with the finite element method. For the complex structure of the object, another fine triangle mesh is used to represent the skin, and its deformation is solved by a thin shell technique. To couple the motion between different layers of the fruit, a tracking force is used to pull the skin and drive its deformation together with the volume mesh. In comparison with the previous work, our method provides temporally and spatially varying parameters to model the complex phenomena of object withering. Moreover, the water diffusivity can also be given by user input to present various material properties of the cut section and skin-covered area. Our algorithm is easy to implement and highly efficient in generating a realistic appearance for the withering effect. For a medium-scale model, we can achieve interactive simulation. Copyright © 2012 John Wiley & Sons, Ltd.
关键词	Deformation Diffusion In Liquids Finite Element Method Fruits Moisture Determination
学科领域	Computer Science
语种	英语
WOS记录号	WOS:000305607100026
引用统计
内容类型	会议论文
URI标识	http://ir.iscas.ac.cn/handle/311060/15710
专题	中国科学院软件研究所
推荐引用方式 GB/T 7714	Liu Youquan,Chen Yanyun,Wu Wen,et al. physically based object withering simulation[C],2012:395-406.