动态NURBS方法综述
A Review of Dynamic NURBS Approach
AI总结:
本文综述了动态NURBS(D-NURBS)理论,通过拉格朗日力学将自由形状表示与物理模型统一,并针对一维曲线变形介绍了其约束和数值实现。
摘要:
动态NURBS,也称为D-NURBS,是非均匀有理B样条(NURBS)的一种已知动态版本,它将自由形状表示和基于物理的模型集成在一个统一框架中。最近,计算机辅助设计(CAD)和有限元(FEM)社区意识到需要统一CAD和FEM描述,这促使了对D-NURBS概念的回顾。因此,本文在一维形状变形的背景下描述了D-NURBS理论。我们从回顾用于曲线空间参数化表示的NURBS开始。然后,引入拉格朗日力学以完善理论背景。接着,介绍了一维曲线空间的D-NURBS框架以及关于约束和数值实现的一些细节。在实验结果中,我们关注参数选择和计算成本。
英文摘要:
Dynamic NURBS, also called D-NURBS, is a known dynamic version of the nonuniform rational B-spline (NURBS) which integrates free-form shape representation and a physically-based model in a unified framework. More recently, computer aided design (CAD) and finite element (FEM) community realized the need to unify CAD and FEM descriptions which motivates a review of D-NURBS concepts. Therefore, in this paper we describe D-NURBS theory in the context of 1D shape deformations. We start with a revision of NURBS for parametric representation of curve spaces. Then, the Lagrangian mechanics is introduced in order to complete the theoretical background. Next, the D-NURBS framework for 1D curve spaces is presented as well as some details about constraints and numerical implementations. In the experimental results, we focus on parameters choice and computational cost.
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