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A New Algorithm to Calculate the Optimal Inclination Angle for Filling of Plunge-milling
Plunge-milling Plungers Optimal Inclination Angle Residual Volume
2009/8/19
residual volume (inaccessible volume by the plungers) is minimized when selecting a specific direction of filling. This direction is known as the optimal inclination angle for filling of the plunged a...
Simulation of subassembly production at shipyards
computer simulation shipbuilding assembly processes shipyard processes
2009/8/19
Utilization of resources, make an achievable planning and ensure that this planning is kept. Possible problems should be eliminated before production starts and if unexpected disturbances occur in the...
Blending Surface Modelling Using Sixth Order PDEs
curvature continuity surface blending sixth order partial differential equation
2009/8/19
In order to model blending surfaces with curvature continuity, in this paper we apply sixth order partial differential equations (PDEs), which are solved with a composite power series based method. Th...
Rapid Prototyping of Polymer Microfluidic Devices Using CAD/CAM Tools for Laser Micromachining
Excimer laser micromachining CAD/CAM RP polymer microstructures
2009/8/19
A CAD/CAM system has been developed for rapid prototyping (RP) of microfluidic devices based on excimer laser micromachining. The system comprises of two complementary softwares. One, the CAM tool, cr...
Construction of Cubic Triangular Patches with C1 Continuity around a Corner
Triangular patches vertex consistency problem continuity interpolation
2009/8/19
This paper presents a novel approach for constructing a piecewise triangular cubic polynomial surface with c1 continuity around a common corner vertex. A c1 continuity condition between two cubic tria...
Inscribed Approximation based Adaptive Tessellation of Catmull-Clark Subdivision Surfaces
subdivision Catmull-Clark surfaces tessellation surface evaluation
2009/8/19
Catmull-Clark subdivision scheme provides a powerful method for building smooth and complex surfaces. But the number of faces in the uniformly refined meshes increases exponentially with respect to su...
Nowadays, many commercial CAD systems support history-based, constraint-based and feature-based modeling. Unfortunately, most systems fail during the re-evaluation phase when various kind of topologic...
3D Model Retrieval Based on Orthogonal Projections
3D model retrieval orthogonal projections moment invariants
2009/8/19
Recently with the development of 3D modeling and digitizing tools, more and more models have been created, which leads to the necessity of the technique of 3D mode retrieval system. In this paper we i...
Voxel-Based Thickness Analysis of Intricate Objects
CAD/CAM Axis Transformation Thickness Radiography Voxels
2009/8/19
Thickness is a commonly used parameter in product design and manufacture. Its intuitive definition as the smallest dimension of a cross-section or the minimum distance between two opposite surfaces is...
A New Scheme for Watermarking Engineering Graph
Watermarking Engineering graph U-system U descriptors
2009/8/19
Engineering graph plays an important role in design and manufacture, such as architecture, machinery, manufacture, military. However, almost no persons consider the security and copyright of two-dimen...
Non-iterative Global Mesh Smoothing with Feature Preservation
Triangular mesh mesh smoothing Laplace operator least squares feature preservation
2009/8/19
This paper presents a novel approach for non-iterative surface smoothing with feature preservation on arbitrary meshes. Laplacian operator is performed in a global way over the mesh. The surface smoot...
Surface Extraction from Multi-material CT Data
Computed Tomography Medial Axis/Surface Contouring
2009/8/19
This paper describes a method for extracting surfaces from multi-material CT (Computed Tomography) data. Most contouring methods such as Marching Cubes algorithm assume that CT data are composed of on...
Mesh Simplification and Adaptive LOD for Finite Element Mesh Generation
Finite element analysis Triangular meshes Mesh simplification
2009/8/19
In this paper, we propose a new triangular finite element mesh generation method based on simplification of high-density mesh and adaptive Level-of-Detail (LOD) methods for efficient CAE. In our metho...
Geometric Hermite Curves Based on Curvature Variation Minimization
curvature variation geometric smoothness Hermite
2009/8/19
Based on the smoothness criterion of minimum curvature variation of the curve, tangent angle constraints guaranteeing an optimized geometric Hermite (OGH) curve both mathematically and geometrically s...
C1 Continuous Piecewise Rational Re-parameterization
Parametric curves Arc-length parameterization Mobius transformation
2009/8/19
A new method to obtain explicit re-parameterization that preserves the curve degree and parametric domain is presented in this paper. The re-parameterization brings a curve very close to the arc lengt...