Definition Finite element modeling is an important computational tool in neural engineering to simulate neural excitation with implanted electrodes or with surface electrodes. Besides its importance for analyzing artificially generated neural activities, e.g., in the spinal cord (Danner et al., 2014; Hofstoetter et al., 2014), this technique is useful to interpret recorded electrical biosignals...

I want to thank my dear colleague Peter Halldin at the Department of Aeronautics, KTH, for being such a nice and helpful roommate , as well as, together with my two other colleagues at the Neuronics; Karin Brolin and Magnus Aare, for open minded and stimulating discussions. I am grateful to Professor Jan Bäcklund, head of the Department, for his enthusiasm. I want to thank the Engineering Resea...

Modeling the deformation of human organs for surgery simulation systems has turned out to be quite a challenge. Not only is very little known about the physical properties of general human tissue but in addition, most conventional modeling techniques are not applicable because of the timing requirements of simulation systems. To produce a video-like visualization of a deforming organ, the defor...

There is an increased need to study the human oropharyngeal anatomy for research in speech production, feeding motion, and breathing activities. Computational anatomic models are also useful to conduct virtual experiments without extensive use of human subjects, to plan and train surgeries. Recent improved methods for fast and high resolution imaging of internal organs, such as, Magnetic Resona...

We introduce the notion of time continuity for the analysis of cohesive zone interface finite element models. We focus on “initially rigid” models in which an interface is inactive until the traction across it reaches a critical level. We argue that methods in this class are time discontinuous, unless special provision is made for the opposite. Time discontinuity leads to pitfalls in numerical ...

The paper demonstrates reduced order modeling (ROM) of the strongly coupled system level dynamic analysis of micro electro mechanical systems (MEMS) by lumped finite elements (FE) and substructuring implemented in the ANSYS/Multiphysics program. Index terms Micro Electromechanical Systems (MEMS), Finite elements (FE), Coupled analysis, Reduced order modeling (ROM)

the high costs of experimental works on the nanocomposites can be reduced through implementation of analytical and numerical studies. to study the effect of impact energy on the nanocomposites, a nanocomposite composedof polyurethane and clay nanoparticles is selected as a case study. the finite element modeling is carried out using the ansys software, and the impact analysis is performed using...

the finite element method (fem) is one of advanced methods in modeling of solid mechanics used in the design and analyzing of prosthesis in the human body. one of the important factors in designing a femur (the linkage between basin and knee) which is under complicated stresses is to minimize the amount of the stress in the components of the prosthesis due to the body weight. in this research t...

This paper presents an automated procedure to generate a three-dimensional finite element model of an individual patient’s mandible with dental implants inserted. The reconstruction of the geometry as well as the modeling of the material properties for the different types of bone in the jaw is based on CT data. For this purpose various methods of image processing, geometric modeling and finite ...

3D Hybrid Finite Element Finite Difference Time Domain (FE/FDTD) Method is developed and applied to the numerical modeling of antennas. The antenna geometry is modeled using tetrahedral finite element mesh. Pyramidal elements are introduced in the transition from unstructured tetrahedral elements to structured hexahedral elements. The finite element formulation incorporates the excitation of an...