The Experts below are selected from a list of 60 Experts worldwide ranked by ideXlab platform

J. Yan - One of the best experts on this subject based on the ideXlab platform.

  • Haptic Simulation of Linear Elastic Media with Fluid Inclusions
    2005
    Co-Authors: A.h. Gosline, Septimiu E. Salcudean, J. Yan
    Abstract:

    We present a fast technique for simulating fluid-filled elastic objects with the Finite Element Method. By simulating the presence of fluid with hydrostatic fluid pressure, a quasi-static simulation of fluid can be achieved by applying a Force Boundary Condition to the nodes on the fluidelastic interface. Using a proportional feedback control algorithm, a relationship between the volume and pressure of the fluid structure can be maintained. Optimal parameters for the control algorithm are found by determining the response of the elastic system to changes in pressure. This approach has been shown to agree with experimental deformation data taken from a fluid-filled gelatin phantom. Combining linear FEM methods with matrix condensation techniques and the tuned proportional feedback control allows for the simulation of a fluid-filled elastic object at real-time haptic update rates.

  • HAPTICS - Haptic simulation of linear elastic media with fluid pockets
    12th International Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems 2004. HAPTICS '04. Proceedings., 2004
    Co-Authors: A.h. Gosline, Septimiu E. Salcudean, J. Yan
    Abstract:

    A fast technique for simulating fluid pockets enclosed in an elastic body has been developed using the finite element method. By treating fluid pressure as a Force Boundary Condition, the relationship between the volume and pressure of a fluid cavity can be enForced with an iterative solver. This computational approach has been shown to agree with experimental data taken from a gelatin phantom that contains a small fluid pocket. Combining linear methods and condensation techniques with this iterative solver, fast simulation of elastic bodies that include fluid pockets can be achieved. For example, an extension of a two dimensional needle insertion simulation can be carried out at 512Hz for a 24 node incompressible fluid pocket.

A.h. Gosline - One of the best experts on this subject based on the ideXlab platform.

  • Haptic Simulation of Linear Elastic Media with Fluid Inclusions
    2005
    Co-Authors: A.h. Gosline, Septimiu E. Salcudean, J. Yan
    Abstract:

    We present a fast technique for simulating fluid-filled elastic objects with the Finite Element Method. By simulating the presence of fluid with hydrostatic fluid pressure, a quasi-static simulation of fluid can be achieved by applying a Force Boundary Condition to the nodes on the fluidelastic interface. Using a proportional feedback control algorithm, a relationship between the volume and pressure of the fluid structure can be maintained. Optimal parameters for the control algorithm are found by determining the response of the elastic system to changes in pressure. This approach has been shown to agree with experimental deformation data taken from a fluid-filled gelatin phantom. Combining linear FEM methods with matrix condensation techniques and the tuned proportional feedback control allows for the simulation of a fluid-filled elastic object at real-time haptic update rates.

  • HAPTICS - Haptic simulation of linear elastic media with fluid pockets
    12th International Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems 2004. HAPTICS '04. Proceedings., 2004
    Co-Authors: A.h. Gosline, Septimiu E. Salcudean, J. Yan
    Abstract:

    A fast technique for simulating fluid pockets enclosed in an elastic body has been developed using the finite element method. By treating fluid pressure as a Force Boundary Condition, the relationship between the volume and pressure of a fluid cavity can be enForced with an iterative solver. This computational approach has been shown to agree with experimental data taken from a gelatin phantom that contains a small fluid pocket. Combining linear methods and condensation techniques with this iterative solver, fast simulation of elastic bodies that include fluid pockets can be achieved. For example, an extension of a two dimensional needle insertion simulation can be carried out at 512Hz for a 24 node incompressible fluid pocket.

Jingfeng Jiang - One of the best experts on this subject based on the ideXlab platform.

  • A finite-element approach for Young's modulus reconstruction
    IEEE transactions on medical imaging, 2003
    Co-Authors: Yanning Zhu, Timothy J. Hall, Jingfeng Jiang
    Abstract:

    Modulus imaging has great potential in soft-tissue characterization since it reveals intrinsic mechanical properties. A novel Young's modulus reconstruction algorithm that is based on finite-element analysis is reported here. This new method overcomes some limitations in other Young's modulus reconstruction methods. Specifically, it relaxes the Force Boundary Condition requirements so that only the Force distribution at the compression surface is necessary, thus making the new method more practical. The validity of the new method is demonstrated and the performance of the algorithm with noise in the input data is tested using numerical simulations. Details of how to apply this method under clinical Conditions is also discussed.

Septimiu E. Salcudean - One of the best experts on this subject based on the ideXlab platform.

  • Haptic Simulation of Linear Elastic Media with Fluid Inclusions
    2005
    Co-Authors: A.h. Gosline, Septimiu E. Salcudean, J. Yan
    Abstract:

    We present a fast technique for simulating fluid-filled elastic objects with the Finite Element Method. By simulating the presence of fluid with hydrostatic fluid pressure, a quasi-static simulation of fluid can be achieved by applying a Force Boundary Condition to the nodes on the fluidelastic interface. Using a proportional feedback control algorithm, a relationship between the volume and pressure of the fluid structure can be maintained. Optimal parameters for the control algorithm are found by determining the response of the elastic system to changes in pressure. This approach has been shown to agree with experimental deformation data taken from a fluid-filled gelatin phantom. Combining linear FEM methods with matrix condensation techniques and the tuned proportional feedback control allows for the simulation of a fluid-filled elastic object at real-time haptic update rates.

  • HAPTICS - Haptic simulation of linear elastic media with fluid pockets
    12th International Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems 2004. HAPTICS '04. Proceedings., 2004
    Co-Authors: A.h. Gosline, Septimiu E. Salcudean, J. Yan
    Abstract:

    A fast technique for simulating fluid pockets enclosed in an elastic body has been developed using the finite element method. By treating fluid pressure as a Force Boundary Condition, the relationship between the volume and pressure of a fluid cavity can be enForced with an iterative solver. This computational approach has been shown to agree with experimental data taken from a gelatin phantom that contains a small fluid pocket. Combining linear methods and condensation techniques with this iterative solver, fast simulation of elastic bodies that include fluid pockets can be achieved. For example, an extension of a two dimensional needle insertion simulation can be carried out at 512Hz for a 24 node incompressible fluid pocket.

Cheng Jin - One of the best experts on this subject based on the ideXlab platform.