Patents by Inventor Iñaki Çaldichoury

Iñaki Çaldichoury 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).

  • Configuring resistance spot welding setup based on numerical simulation results
    Patent number: 11238195
    Abstract: FEA model representing a RSW setup is defined and received in a computer system. The FEA model contains multiple solid elements representing a pair of electrodes and two workpieces. Numerically-calculated heat-power distributions and structural behaviors of the workpieces are obtained by conducting a time-marching simulation using FEA model with a set of time-dependent electrode forces and corresponding set of time-dependent electrical current. An overlapped contact area and corresponding contact center between first and second element contact faces of each of the solid element pairs in contact are determined. Respective elemental coordinates of the contact center in the first and second element contact faces are calculated. Augmented terms for Joule heating effects are added to the overall stiffness matrix for obtaining Joule heat rate power at each contact center, which is then distributed to respective corner nodes of the first and second element contact faces according to respective elemental coordinates.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: February 1, 2022
    Inventors: Iñaki Çaldichoury, Pierre L'Eplattenier
  • Configuring Resistance Spot Welding Setup Based On Numerical Simulation Results
    Publication number: 20200342069
    Abstract: FEA model representing a RSW setup is defined and received in a computer system. The FEA model contains multiple solid elements representing a pair of electrodes and two workpieces. Numerically-calculated heat-power distributions and structural behaviors of the workpieces are obtained by conducting a time-marching simulation using FEA model with a set of time-dependent electrode forces and corresponding set of time-dependent electrical current. An overlapped contact area and corresponding contact center between first and second element contact faces of each of the solid element pairs in contact are determined. Respective elemental coordinates of the contact center in the first and second element contact faces are calculated. Augmented terms for Joule heating effects are added to the overall stiffness matrix for obtaining Joule heat rate power at each contact center, which is then distributed to respective corner nodes of the first and second element contact faces according to respective elemental coordinates.
    Type: Application
    Filed: April 23, 2019
    Publication date: October 29, 2020
    Inventors: Iñaki Çaldichoury, Pierre L'Eplattenier