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This model studies the temperature effects on the viscoelastic stress relaxation in a long thick-walled cylinder. In particular, decay of the stresses under the influence of the temperature field during a period of two hours is studied. A four-term generalized Maxwell model represents ... 詳細を見る

多孔質構造における輸送は, 通常, 有効輸送特性を持つ簡略化された均質モデルを用いて扱われます. これは, 多孔質構造を構成する細孔や粒子の典型的な寸法が, モデル化対象となる領域のサイズよりも数桁小さいため, ほとんどの場合に必要不可欠です. このモデルは, 詳細モデルで記述された人工多孔質構造における輸送と, 有効輸送特性を用いた簡略化された均質多孔質媒体アプローチを比較することにより, 多孔質媒体における有効拡散率の概念を導入します. このモデルは2つの部分で構成されています. 最初の部分では, 詳細な形状を持つモデルを作成します. 2番目の部分では, ... 詳細を見る

Fatigue testing of nonlinear materials with creep mechanism is a time-consuming process. In accelerated life testing the experiment time is greatly reduced by subjecting the material to testing conditions in excess of the operating one. In the model an aggressive thermal load cycle is ... 詳細を見る

Voltammetry is modeled at a microelectrode of 10um radius. In this common analytical electrochemistry technique, the potential at a working electrode is swept up and down and the current is recorded. The current-voltage waveform ("voltammogram") gives information about the reactivity and ... 詳細を見る

An antenna array is a group of radiating elements. By controlling the phase and magnitude of the input signal assigned to each antenna element and the number of array elements, the radiation pattern can be steered in a desired direction with a preferred level of gain. In this example, a ... 詳細を見る

The graviational three body problem involves the calculation of the positions and velocities of three objects under mutual gravitational attraction, given their position and velocity at some initial time. While the three-body problem does not have a general analytic solution and is ... 詳細を見る

When modeling the propagation of charged particle beams at high currents and relativistic speeds, the space charge and beam current create significant electric and magnetic forces that tend to expand and focus the beam, respectively. The Charged Particle Tracing interface uses an ... 詳細を見る

A stent is a wire-mesh tube used to open a coronary artery during angioplasty, a process for the removal or compression of plaque. Their design is of significance for percutaneous transluminal angioplasty with stenting. During this procedure, a stent is deployed into the blood vessel by ... 詳細を見る

In this tutorial, the propagation of elastic waves in the ground after a seismic event is simulated using a 2D model. The effect of the ground surface topology on the wave propagation is illustrated when an ideal half space is modified with the presence of a small mountain. The model is ... 詳細を見る

In the semiconductor industry, rapid thermal annealing (RTA) is a semiconductor process step used for the activation of dopants and the interfacial reaction of metal contacts. In principle, the operation involves rapid heating of a wafer from ambient to approximately 1000–1500 K. As soon ... 詳細を見る