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作者:... Jinesh Machchhar , Pablo Antolin , Gershon Elber
来源:[J].Computer-Aided Design(IF 1.264), 2018, Vol.102, pp.148-159
摘要:Abstract(#br)This paper proposes new methods and algorithms for the construction of micro-structures that leads to a high degree of precision and water-tight models. That proposed approach involves the tiling of the domain of a deformation map using copies of a tile. The resultin...
作者:Ben Ezair , Gershon Elber
来源:[J].Graphical Models(IF 0.697), 2019, Vol.103
摘要:Abstract(#br)This paper presents how freeform surface properties can be estimated through bounding, rather than sampling. Bounding surface positions using the control mesh, and bounding surface normals using normal cones, are both well known procedures. In this paper, we add to t...
作者:Jinesh Machchhar , Denys Plakhotnik , Gershon Elber
来源:[J].Computer-Aided Design(IF 1.264), 2017, Vol.90, pp.48-58
摘要:Abstract(#br)This paper presents an algebraic based approach and a computational framework for the simulation of multi-axis CNC machining of general freeform tools. The boundary of the swept volume of the tool is precisely modeled by a system of algebraic constraints, using ...
作者:Ben Ezair , Gershon Elber
来源:[J].Computer-Aided Design(IF 1.264), 2018, Vol.102, pp.171-181
摘要:Abstract(#br)In this paper, we present a method for generating smooth 5-axis tool-paths for computer numerical control (CNC) machining, that are assured to be globally accessible. We do so, for a given ball-end cutter and cutter contact curve, and a general arrangement of mo...
作者:... Youngjin Park , Myung-Soo Kim , Gershon Elber
来源:[J].Computers & Graphics(IF 0.794), 2019, Vol.82, pp.84-94
摘要:Abstract(#br)We present a new method for offset surface trimming that eliminates redundant parts of an offset surface that are closer than the offset distance to the original surface. The proposed approach deals with numerical instability around near-singular regions of an offset...
作者:Fady Massarwi , Boris van Sosin , Gershon Elber
来源:[J].Computers & Graphics(IF 0.794), 2018, Vol.70, pp.80-91
摘要:Abstract(#br)Trimmed B-spline surfaces are common in the geometric computer aided design (CAD) community due to their capability to represent complex shapes that can not be modeled with ease using tensor product B-spline and NURBs surfaces. However, in many cases, handling trimme...
作者:Ben Ezair , Saul Fuhrmann , Gershon Elber
来源:[J].Computer-Aided Design(IF 1.264), 2018, Vol.100, pp.1-13
摘要:Abstract(#br)In additive manufacturing (AM), slicing is typically used to manufacture 3D models, one layer after another. Yet, in recent years quite a few hardware platforms were introduced toward the use of multi-axes AM with general 3D curves as print-paths. This paper presents...
作者:Fady Massarwi , Pablo Antolin , Gershon Elber
来源:[J].Computer Aided Geometric Design(IF 0.81), 2019, Vol.71, pp.1-15
摘要:Abstract(#br)3D objects, modeled using Computer Aided Geometric Design (CAGD) tools, are traditionally represented using a boundary representation (B-rep), and typically use spline functions to parameterize these boundary surfaces. However, recent development in physical ana...
作者:Jinesh Machchhar , Gershon Elber
来源:[J].Computer Aided Geometric Design(IF 0.81), 2017
摘要:Abstract(#br)This paper proposes an algorithm for computing dense packings of congruent circles inside general 2D containers. Unlike the previous approaches which accept as containers, only simple, symmetric shapes such as circles, rectangles and triangles, our method works for a...
作者:Jinesh Machchhar , Gershon Elber
来源:[J].Computer Aided Geometric Design(IF 0.81), 2018
摘要:Abstract(#br)In [3], an algorithm is presented for computing all real roots of univariate scalar Bernstein polynomials by subdividing the polynomial at a known root and then factoring out the root from the polynomial, resulting in a reduction in problem complexity. This short rep...

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