Patents by Inventor Youssef M. A. Hashash

Youssef M. A. Hashash 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).

  • COLLISION IMPULSE DERIVED DISCRETE ELEMENT CONTACT FORCE DETERMINATION ENGINE, METHOD, SOFTWARE AND SYSTEM
    Publication number: 20140358505
    Abstract: A method and engine for simulating a multi-body system, the method or engine including code for determining collision impulse over a time period for a plurality of colliding bodies in the system. An admissible function is determined from the collision impulse and resembles true contact force from the collision impulse. Complete contact force change during collision is derived from the admissible function.
    Type: Application
    Filed: May 23, 2014
    Publication date: December 4, 2014
    Inventors: Youssef M.A. Hashash, Seung Jae Lee, Jamshid Ghaboussi
  • Methods and systems for modeling material behavior
    Patent number: 8095344
    Abstract: A method for modeling material behavior includes using empirical three dimensional non-uniform stress and strain data to train a self-organizing computational model such as a neural network. A laboratory device for measuring non-uniform stress and strain data from material includes an enclosure with an inclusion in it. As the enclosure is compressed, the inclusion induces a non-uniform state of stress and strain. A field testing device includes a body having a moveable section. When the body is inserted in a material and the moveable section moved, a non-uniform state of stress and strain can be characterized.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: January 10, 2012
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Jamshid Ghaboussi, Youssef M. A. Hashash, David Pecknold
  • METHODS AND SYSTEMS FOR MODELING MATERIAL BEHAVIOR
    Publication number: 20090112489
    Abstract: A method for modeling material behavior includes using empirical three dimensional non-uniform stress and strain data to train a self-organizing computational model such as a neural network. A laboratory device for measuring non-uniform stress and strain data from material includes an enclosure with an inclusion in it. As the enclosure is compressed, the inclusion induces a non-uniform state of stress and strain. A field testing device includes a body having a moveable section. When the body is inserted in a material and the moveable section moved, a non-uniform state of stress and strain can be characterized.
    Type: Application
    Filed: October 14, 2008
    Publication date: April 30, 2009
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: Jamshid Ghaboussi, Youssef M.A. Hashash, David Pecknold
  • Methods and systems for modeling material behavior
    Patent number: 7447614
    Abstract: A method for modeling material behavior includes using empirical three dimensional non-uniform stress and strain data to train a self-organizing computational model such as a neural network. A laboratory device for measuring non-uniform stress and strain data from material includes an enclosure with an inclusion in it. As the enclosure is compressed, the inclusion induces a non-uniform state of stress and strain. A field testing device includes a body having a moveable section. When the body is inserted in a material and the moveable section moved, a non-uniform state of stress and strain can be characterized.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: November 4, 2008
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Jamshid Ghaboussi, Youssef M. A. Hashash, David Pecknold
  • Methods for modeling material response to applied force
    Patent number: 7246047
    Abstract: A method for modeling the interaction of granular material with equipment includes the steps of numerically representing the material with an array having a plurality of cells, determining which of the cells may be unstable using a self-organizing computational model, and modeling the motion of the unstable cells using the model. Preferably, output is provided in virtual reality format in real time.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: July 17, 2007
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Jamshid Ghaboussi, Youssef M. A. Hashash
  • Methods and systems for modeling material behavior
    Publication number: 20030216894
    Abstract: A method for modeling material behavior includes using empirical three dimensional non-uniform stress and strain data to train a self-organizing computational model such as a neural network. A laboratory device for measuring non-uniform stress and strain data from material includes an enclosure with an inclusion in it. As the enclosure is compressed, the inclusion induces a non-uniform state of stress and strain. A field testing device includes a body having a moveable section. When the body is inserted in a material and the moveable section moved, a non-uniform state of stress and strain can be characterized.
    Type: Application
    Filed: April 9, 2003
    Publication date: November 20, 2003
    Applicant: The Board of Trustees of the University
    Inventors: Jamshid Ghaboussi, Youssef M.A. Hashash, David Pecknold
  • Methods for modeling material response to applied force
    Publication number: 20030216895
    Abstract: A method for modeling the interaction of granular material with equipment includes the steps of numerically representing the material with an array having a plurality of cells, determining which of the cells may be unstable using a self-organizing computational model, and modeling the motion of the unstable cells using the model. Preferably, output is provided in virtual reality format in real time.
    Type: Application
    Filed: April 9, 2003
    Publication date: November 20, 2003
    Applicant: The Board of trustees of the University
    Inventors: Jamshid Ghaboussi, Youssef M.A. Hashash