Patents by Inventor Fehmi Cirak

Fehmi Cirak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and system for thin-shell finite-element analysis
    Patent number: 6876956
    Abstract: Thin-shell finite-element analysis based on the use of subdivision surfaces: (1) describing the geometry of a shell in its undeformed configuration, and (2) generating smooth interpolated displacement fields possessing bounded energy. No nodal rotations are used in the interpolation. The interpolation scheme induced by subdivision is nonlocal, i.e., the displacement field over one element depends on the nodal displacements of the element nodes and all nodes of immediately neighboring elements. However, the use of subdivision surfaces ensures that all local displacement fields thus constructed combine conformingly to define one single limit surface.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: April 5, 2005
    Assignee: California Institute of Technology
    Inventors: Fehmi Cirak, Michael Ortiz, Peter Schroeder