A numerical code that solves self-consistent radio-frequency (RF) sheathplasma interactions in the ion cyclotron range of frequencies is developed based on a nonlinear finite element technique. The present code solves for plasma waves based on the cold plasma model subject to a sheath boundary condition. The finite element procedure has been implemented for oneand two-dimensional analyses using...

Numerical methods based on finite element (FE) have proven their efficiency for many years in the thermomechanical simulation of forming processes. Nevertheless, application these to new materials requires identification and implementation constitutive flow laws within FE codes, which sometimes pose problems, particularly because strongly non-linear character behavior materials. Computational t...

A virtual finite element framework is presented to provide the transition from a high fidelity model more computationally efficient continuum for simulating fibre-dominated damage behavior in composite laminates subjected tensile loadings. The method LS-DYNA based on use of cohesive interface elements simulate both intra-laminar matrix cracks and delamination. Applied IM7/8552 carbon fibre rein...

In order to study the andesitic porphyrite failure rule of open-cut blasting in diversion tunnel reservoir, taking Qianping reservoir project as an example through test and vibration detection, field observation, statistical analysis numerical simulation, technology open cut is studied. Finite element method software ANSYS was used establish finite calculation model reservoir. The process simul...

The extended finite element method (X-FEM) is a numerical method for modeling strong (displacement) as well as weak (strain) discontinuities within a standard finite element framework. In the X-FEM, special functions are added to the finite element approximation using the framework of partition of unity. For crack modeling in isotropic linear elasticity, a discontinuous function and the two-dim...

In this research, finite element analysis of the conventional drilling and vibration assisted drilling is carried out. The ABAQUS software is employed for FE analysis. The Johnson-Cook models for both plastic deformation and damage are employed for FE simulation.The results of the FE analysis are then verified with experimental results in both conventional and vibration assisted drilling on Al ...

Three-dimensional finite element analysis of soil interaction with a rigid wheel R.C. Chiroux , W.A. Foster Jr. *, C.E. Johnson , S.A. Shoop , R.L. Raper d a Aerospace Engineering Department, Auburn University, Alabama, 36849, USA b Agricultural Engineering Department, Auburn University, Alabama, 36849, USA c Cold Regions Research and Engineering Laboratory, Hanover, New Hampshire, 03755, USA d...

In this paper, an improved superconvergence analysis is presented for both the Crouzeix-Raviart element and Morley element. The main idea of to employ a discrete Helmholtz decomposition difference between canonical interpolation finite solution first-order mixed Raviart–Thomas Hellan–Herrmann–Johnson element, respectively. This in particular allows proving full one-order result these two elemen...

The numerical simulation of structural parts made from polymers is becoming increasingly important. Although highly sophisticated material laws are available in commercial finite element programs, there are still open questions, especially for crashworthiness analysis. In this paper, we restrict our attention to the explicit solver of LS-DYNA, see [1] and [2]. However, the results are transfera...

The objective of this study was two-fold. The first objective was to develop and validate a high resolution, anatomically accurate brain finite element (FE) model from the International Consortium for Brain Mapping (ICBM) brain atlas using a voxel-based mesh generation approach. The second objective was to quantitatively compare performance of six validated brain FE models in three validation c...