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Alla Sheffer

 PhD Student, Computer Science Department
Hebrew University
Web Page: http://www.cs.huji.ac.il/~sheffa/
E-mail: sheffa@cs.huji.ac.il

MESHING
RESEARCH
CORNER

Blacker, Ted, Alla Sheffer, Jan Clements and Michel Bercovier

    "Using Virtual Topology to Simplify the Mesh Generation Process", AMD-Vol. 220 Trends in Unstructured Mesh Generation, ASME, pp.45-50, July 1997
    keywords:
    • CAD
      		•
    • data structures
    • defeaturing
      		•
    • dirty geometry
    • geometry management
      		•
    Abstract

Liesen, J., E. de Sturler, A. Sheffer, Y. Aydin, and C. Siefert
    "Preconditioners for Indefinite Linear Systems Arising in Surface Parameterization", Proceedings, 10th International Meshing Roundtable, Sandia National Laboratories, pp.71-81, October 7-10 2001
    keywords:
    • surface parameterization
      		•
    • triangulation
    • flattening
      		•
    • linear systems
    • Krylov subspace methods
      		•
    • preconditioning
    • indefinite problems
      		•
    • parameterization
    Abstract
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Sheffer, A., M. Etzion, A. Rappoport and M. Bercovier
    "Hexahedral Meshing of Non-Linear Volumes using Voronoi Faces and Edges", 2nd Symposium on Trends in Unstructured Mesh Generation, University of Colorado, Boulder, August 1999
    keywords:
    • hexahedra
      		•
    • medial surface
    • Voronoi graph
      		•
    • EVG
    Abstract

Sheffer, Alla and E. de Struler
    "Surface Parameterization For Meshing by Triangulation Flattening", Proceedings, 9th International Meshing Roundtable, Sandia National Laboratories, pp.161-172, October 2000
    keywords:
    • parameterization
      		•
    • surface meshing
    • triangulation flattening
      		•
    • flattening
    Abstract
    Download Full Paper (Postscript Format)

Sheffer, Alla and Michel Bercovier
    "Hexahedral meshing of non-linear volumes using Voronoi faces and edges", International Journal for Numerical Methods in Engineering, John Wiley, Vol 49, Num 1, pp.329-351, September 10-20 2000
    keywords:
    • hexahedra
      		•
    • medial axis
    • Voronoi diagram
      		•
    • embedded Voronoi graph
    • decomposition
      		•
    Abstract

Sheffer, Alla, Michal Etzion, Ari Rappoport, Michel Bercovier
    "Hexahedral Mesh Generation using the Embedded Voronoi Graph", Proceedings, 7th International Meshing Roundtable, Sandia National Lab, pp.347-364, October 1998
    keywords:
    • hexahedra
      		•
    • medial axis
    • Voronoi graph
      		•
    Abstract
    Download Full Paper (Postscript Format)

Sheffer, Alla, Ted Blacker and Michel Bercovier
    "Clustering: Automated Detail Suppression Using Virtual Topology", AMD-Vol. 220 Trends in Unstructured Mesh Generation, ASME, pp.57-64, July 1997
    keywords:
    • CAD
      		•
    • defeaturing
    • geometry management
      		•
    Abstract

Sheffer, Alla, Ted Blacker and Michel Bercovier
    "Steps Towards Smooth CAD-FEM Integration", Numerical Grid Generation in Computational Field Simulations, Ed. M. Cross., B. K. Soni, J. F. Thompson, J. Hauser, P. R. Eiseman, Proceedings of the 6th International Conference, held at the University of Greenwich, pp.705-714, July 1998
    keywords:
    • CAD
      		•
    • detail suppression
    • geometry decomposition
      		•
    • virtual topology
    • geometry management
      		•
    Abstract

Sheffer, Alla, Ted Blacker Jan Clements Michel Bercovier
    "Virtual Topology Operators for Meshing", Proceedings, 6th International Meshing Roundtable, Sandia National Laboratories, pp.49-66, October 1997
    keywords:
    • B-rep
      		•
    • CAD
    • defeaturing
      		•
    • geometry clean-up
    Abstract
    Download Full Paper (Postscript Format)

Sheffer, Alla; de Sturler, Eric
    "Parameterization of CAD Surfaces for Meshing by Triangulation Flattening", Numerical Grid Generation in Computational Field Simulations, The International Society of Grid Generation, pp.699-708, September 2000
    keywords:
    • CAD
      		•
    • flattening
    • parameterization
      		•
    • triangulated surface
    Abstract

Sifri, Oren, Alla Sheffer and Craig Gotsman
    "Geodesic-based surface remeshing", Proceedings, 12th International Meshing Roundtable, Sandia National Laboratories, pp.189-199, Sept. 2003
    keywords:
    • triangle
      		•
    • surface meshing
    • geodesic distance
      		•
    • faceted surface representations
    Abstract
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Ungor, Alper; Sheffer, Alla; Haber, Robert
    "Space-Time Meshes for Non-linear Hyperbolic Problems Satisfying a Non-uniform Cone Constraint", Numerical Grid Generation in Computational Field Simulations, The International Society of Grid Generation, pp.375-384, September 2000
    keywords:
    • alpha
      		•
    • cone constraint
    • Discontinuous Galerkin
      		•
    • non-uniform cone constraint
    • NUCC
      		•
    • space-time
    • UCC
      		•
    Abstract

Ungör, Alper, Alla Sheffer
    "Tent-Pitcher: A Meshing Algorithm for Space-Time Discontinuous Galerkin Methods", Proceedings, 9th International Meshing Roundtable, Sandia National Laboratories, pp.111-122, October 2000
    keywords:
    • space-time meshes
      		•
    • cone constraint
    • simplicial meshes
      		•
    • tetrahedra
    Abstract
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Volpin, O., A. Sheffer, M. Bercovier and L. Joskowicz
    "Mesh simplification with smooth surface reconstruction", Computer-Aided Design, Elsevier, Vol 30, Num 11, pp.875-882, 1998
    keywords:
    • clustering
      		•
    • subdivision
    • piecewise Bezier surface
      		•
    • thin plate energy
    • quadrilateral
      		•
    • surface reconstruction
    • mesh simplification
      		•
    Abstract

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