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Smooth Boundary Topology Optimization Using B-spline and Hole Generation
Smooth boundary topology optimization Selection criterion
2009/8/19
A topology optimization methodology, named “smooth boundary topology optimization,” is proposed using a simple idea of combining parameterized boundary shape optimization and selection criterion for h...
3D Model Compression For Collaborative Design
Collaborative product development model compression hierarchical structure
2009/8/19
The compression of CAD models is a key technology for realizing Internet-based collaborative product development because big model sizes often prohibit us to achieve a rapid product information transm...
Shape Recognition and Classification Based on Poisson Equation- Fourier-Mellin Moment Descriptor
Poisson equation Fourier-Mellin moment shape recognition shape classification
2009/8/19
In this paper, we present a new shape descriptor, which is named Poisson equation-Fourier-Mellin moment Descriptor. We solve the Poisson equation in the shape area, and use the solution to get feature...
A method based on boundary deformation for planar grid generation
Curve Generation Grid Generation Boundary Deformation of Grid
2009/8/19
This paper puts forward a method based on the boundary deformation for planar grid generation. Many methods start with the special properties of grid and switch to the solution of a direct optimizatio...
Development and Improvement of Scene Transition Nets(STN) GUI Simulator for Discrete-continuous Hybrid
Scene Transition Nets(STN) discrete-continuous hybrid systems GUI simulator
2009/8/19
Scene Transition Nets(STN) is a very useful modeling method for discrete-continuous hybrid systems. However, it is difficult to write STN in standard object-oriented programming languages because STN ...
Machining Tool Path Generation for Point Set
Point set machining distance field；offset APSS
2009/8/19
As the point sampling technology evolves rapidly, there has been increasing need in generating tool path from dense point set without creating intermediate models such as triangular meshes or surfaces...
An Efficient Virtual Teeth modeling for dental training system
Dental simulation Haptic interaction Volumetric implicit surface BONO Octree
2009/8/19
This paper describes an implementation of virtual teeth modeling for a haptic dental simulation. The system allows dental students to practice dental procedures with realistic tactual feelings. The sy...
Generation of Realistic Terrain Based on LOD Simplification and Fractal
Level of detail（LOD） Fractal theory Realistic terrain Rendering
2009/8/19
Based on the study of Digital Elevation Simplification Model and fractal theory, this paper put forward a new method to simulate complex terrain. That use simplified DEM data to construct terrain fram...
Domain Mapping using Nonlinear Finite Element Formulation
Domain mapping parameterization atlas finite element method
2009/8/19
Domain mapping is a bijective transformation of one domain to another, usually from a complicated general domain to a chosen convex domain. This is directly useful in many application problems like sh...
Construction of Branching Surface from 2-D Contours
Surface reconstruction Branching surfaces skinning surface approximation
2009/8/19
In the present work, an attempt has been made to construct branching surface from 2-D contours, which are given at different layers and may have branches. If a layer having more than one contour and c...
Generation Of 2-D Parametric Surfaces With Highly Irregular Boundaries
2D surface boundary-conformed surface linear Coons method
2009/8/19
The conventional methods of boundary-conformed 2D surfaces generation usually yield some problems. This paper deals with two boundary-conformed 2D surface generation methods, one conventional approach...
Topology Optimization for Large-displacement Compliant Mechanisms Using Element Free Galerkin Method
Compliant mechanisms Topology optimization Element-free Galerkin methods
2009/8/19
This paper presents a topology optimization approach using element-free Galerkin method (EFGM) for the optimal design of compliant mechanisms with geometrically non-linearity. Meshless method has an a...
An optimization-based computational method for surface fitting to update the geometric information of an existing B-Rep CAD model
Integration CAD/Analysis Finite Element Mesh Nurbs surface
2009/8/19
For several years, researchers have focused on improving the integration of the CAD, CAM and Analysis through a better communication between the various analysis tools. This tendency to integrate the ...
Reliability-Based Design Optimization using Semi-Numerical Strategies for Structural Engineering Applications
Reliability-Based Design Optimization Optimum Safety Factor Reliability Analysis
2009/8/19
When Deterministic Design Optimization (DDO) methods are used, deterministic optimum designs are frequently pushed to the design constraint boundary, leaving little or no room for tolerances (or uncer...
面向IGES输出的曲面重构技术
计算机软件 RE-SOFT软件包 三角化
2009/8/19
针对反求工程中复杂曲面CAD建模专用软件（RE-SOFT）与其他商用CAD/CAM系统间进行信息流动的问题，提出一种面向IGES标准输出的复合三角Beizer曲面重构四边NURBS曲面技术；通过复合三角曲面的特征提取，对三角曲面进行分块、区域边界编辑及相邻区域光滑拼接，进而构造出G1连续的光滑四边NURBS曲面模型并以IGES数据格式传输到其它CAD/CAM系统中进行后续处理，达到了既能充分利用三...