نتایج جستجو برای: finite elements simulation
تعداد نتایج: 1029729 فیلتر نتایج به سال:
Cables are slender structures with a complex geometry, that can undergo large deformations during their installation or in dynamic environments. In combination inner structure they pose challenging problem for finite element simulations. this article simplified approach is presented to model cables by using an effective material and homogeneous cross-section, which anisotropic the elastic inela...
A new simulation strategy to model hydrogen embrittlement based on a multi-field finite element using displacements, pressure, volume variation, nonlocal damage variables and lattice concentration as unknowns is proposed. The material described modified GTN model, which includes the description of enhanced decohesion (HEDE). problem solved fully implicit formulation. Numerical problems related ...
Saccharomyces cerevisiae (baker’s yeast) can exhibit sustained oscillations during the operation in a continuous bioreactor that adversely affects its stability and productivity. Because of heterogeneous nature of cell populations, the cell population balance equation (PBE) can be used to capture the dynamic behavior of such cultures. In this work, an unstructured-segregated model is used f...
We present a new method to simulate deformable volumetric objects interactively using finite elements. With quadratic basis functions and a non-linear strain tensor, we are able to model realistic local compression as well as large global deformation. The construction of the differential equations is described in detail including the Jacobian matrix required to solve the non-linear system. The ...
Peak performance for magnetically confined fusion plasmas occurs near thresholds of instability for macroscopic modes that distort and possibly disrupt equilibrium conditions. In some cases, however, the best approach is to exceed stability thresholds and rely upon nonlinear saturation effects. Understanding this behaviour is essential for achieving ignition in future burning plasma experiments...
A conforming representation composed of two-dimensional finite elements and finite Fourier series is applied to three-dimensional nonlinear non-ideal magnetohydrodynamics using a semi-implicit time-advance. The self-adjoint semi-implicit operator and variational approach to spatial discretization are synergistic and enable simulation in the extremely stiff conditions found in high temperature p...
Real world applications often involve several types of physics. In practice, one often solves such multiphysics problems by using already existing single physics solvers. To satisfy an overall accuracy, it is critical to understand how accurate the individual single physics solution must be. In this paper, we present a framework for a posteriori error estimation of multiphysics problems and der...
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