研究開発におけるマルチフィジックスシミュレーションの具体例
さまざまな業界のエンジニア, 研究者, 科学者がマルチフィジックスシミュレーションを使用して革新的な製品の設計とプロセスを研究および開発しています. COMSOL カンファレンスで発表したテクニカルペーパーやプレゼンテーションからインスピレーションを得てください. 以下の選択項目を参照するか, クイック検索ツールを使用して特定のプレゼンテーションを検索するか, アプリケーション領域でフィルタリングします.
COMSOL Conference 2024 論文集を見る
Outline of presentation: theory of phase-field modeling of ferroelectric materials parameter identification in free energy density finite element implementation: PDE form weak form periodic boundary conditions: electrical mechanical domain configurations intrinsic and extrinsic ... 詳細を見る
Ferroelectric technology continues to attract significant interest due to its wide range of applications (capacitors, nonvolatile memories, accelerometers ...). In this work we present a finite element model of a ferroelectric. Piezoelectric and ferroelectric matrix are included. The ... 詳細を見る
The dielectric properties of ferroelectric PVDF polymer embedded core-shell (Al-Al2o3) nanoparticle is simulated using COMSOL Multiphysics® software. Significant increase in electrical permittivity of the composite at percolation threshold (K = 2800) is achieved when compared to ... 詳細を見る
A novel type of tunable surface acoustic waves (SAW) filter based on 1D phononic crystal controlled by electric is field proposed. The tunability of proposed filter varied over a wide range: 1-20%. Basic idea is electrical controlled induced periodical domains in ferroelectric film based ... 詳細を見る
We theoretically studied the microwave coplanar line of different geometry based on MgO substrate with a thin (30 nm) ferroelectric layer under the external electric field using the environment of 3D modeling in COMSOL Multiphysics®, RF Module, Frequency Domain. Frequency dependence of ... 詳細を見る
A series of ferroelectric ceramic models with grain and grain-boundary structures of different sizes are established via Voronoi tessellations. The relation between the electric displacement and electric field and the hysteresis loop are calculated using a finite element method based on ... 詳細を見る
Large strain is crucial for piezoelectric ceramics to be used as actuators. In this work, a piezoelectric composite with core-shell structure is proposed to pursue high strain at a low applied electric field. The core of the piezoelectric composite is typical ferroelectric material, ... 詳細を見る
Finite Element analysis is used to model 2-D and 3-D paraelectric-dielectric composites (BaTiO3 spherical fillers randomly distributed in constant dielectric matrix). The effective dielectric response and tunability are studied under different filler sizes and different volume fractions. ... 詳細を見る
氧化铪基铁电薄膜材料是一种新型的铁电材料，可以与先进的CMOS工艺兼容；同时其膜厚低于10nm以下时，仍具有良好的铁电性。氧化铪基铁电材料的铁电畴变属于一级相变，因此，与传统铁电薄膜材料中铁电相连续分布的状态相区别的是，氧化铪基铁电薄膜中往往铁电相与非铁电相共存。氧化铪基铁电薄膜材料存在的“唤醒”效应和疲劳失效等问题，本质是由于薄膜内部可翻转铁电相随时间增加或者不断减少引起的。铁电畴的产生及畴壁运动是铁电畴翻转的微观决定因素，因此，铁电畴翻转性能本质上是由铁电畴及畴壁的动力学行为所决定的。只有找到了铁电畴畴壁动力学行为的基本规律，才能从根本上实现对铁电畴翻转性能的调控 ... 詳細を見る
Finite element modelling of surgical transducers has been performed and is described. Ultrasonic transducers vibrating at around 25 kHz are used in orthopaedic surgery to cut bone. The high acoustic impedance of the metal blades used in these devices couples energy more efficiently to ... 詳細を見る