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Ici vous trouverez les présentations issues des Conférences COMSOL à travers le monde. Réalisées par des utilisateurs de COMSOL Multiphysics, ces présentations explorent tous les domaines actuels d'innovation. Les applications couvrent pratiquement tous les secteurs industriels et impliquent des phénomènes électriques, mécaniques, fluidiques et chimiques. Utilisez la recherche rapide pour trouver les présentations les plus intéressantes dans votre domaine d'intérêt.

Consultez les proceedings de la Conference COMSOL 2024

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Design and Simulation of a Microelectromechanical Double-Ended Tuning Fork Strain Gauge

H. H. Zhang [1], A. Bardakas [1], W. D. Leon-Salas [1],
[1] School of Engineering Technology, Purdue University, West Lafayette, IN, USA

Strain gauges have been extensively used for detecting strain in various applications. Double-ended tuning fork (DETF) strain gages present better performance characteristics than standard foil gauges, including higher sensitivity, smaller size and higher resolution. This study focuses ... En savoir plus

Heat Transfer Simulation for Reliability Estimation of Additive Manufacturing Process using the COMSOL Multiphysics® Software

K. W. K. Leung [1], A. Keshtgar [1], N. Iyyer [1],
[1] Technical Data Analysis, Inc., Falls Church, VA, USA

Selective laser melting (SLM) is a popular additive manufacturing (AM) process that creates 3D metal parts by fusing fine metallic powder together. However, it remains difficult to certify AM part as its final quality can largely vary, depending on material and process variations. These ... En savoir plus

A Partial Verification of a COMSOL® Example Problem on the Fluid-Structure Interaction in a Network of Blood Vessels

J. T. Fong [1], A. Heckert [1], J. J. Filliben [1]
[1] National Institute of Standards & Technology, Gaithersburg, MD, USA

Finite element method (FEM)-based solutions are known to contains errors and uncertainties due to at least four mathematical (M) and four physical (P) sources, namely, (M-1) mesh density or degrees of freedom, (M-2) mesh element types, (M-3) mesh quality such as mean aspect ratio, (M-4) ... En savoir plus

Chewing Mechanisms Investigated Using Finite Element Modeling (FEM) for Two Soft Cereal Foods

M. Assad-Bustillos [1], S. Guessasma [1], A.L. Reguerre [1], G. Della-Valle [1],
[1] INRA, Nantes, France

Cereal foods can be considered as cellular solids: texture is defined by their structure and mechanical properties [1]. Elderly people show a significant alteration of oral health [2] and salivation [3], causing difficulties to eat. Therefore, there is a need to understand chewing ... En savoir plus

Finite Element Evaluation of J-integral in 3D for Nuclear Grade Graphite using COMSOL Multiphysics®

A. Bhushan [1], S. K. Panda [1], D. Khan [1]
[1] Indian Institute of Technology (BHU), Varanasi, India

Evaluation of J-integral in three dimensional bimodular stress field has been carried out for a cracked three point bend specimen having properties of nuclear grade graphite (2020). The additional area integral has an important role in J-integral. The stress dependent elasticity ... En savoir plus

Determining Degradation in Solid Oxide Fuel Cells Electrode Materials Using COMSOL Multiphyics® Software

G. Cui[1], Z. Chen[1], F. Tariq[1], V. Yufit[1], N. Brandon[1]
[1]Imperial College London, London, UK

Solid Oxide Fuel Cells (SOFCs) are one of the most attractive technologies for meeting our future energy demands. They promise the efficient conversion of chemical to electrical energy and are a growing area of both academic and industrial interests. Typical electrode-supported SOFCs ... En savoir plus

Modeling of Residual Stresses in a Butt-welded Joint with Experimental Validation

V. Srivastava [1],
[1] Naval Materials Research Laboratory (NMRL), Defence Research and Development Organization (DRDO), Ambernath, Thane, Maharashtra, India

2D-modeling of arc welding in butt-joint configuration was performed in this study considering thermal-structural interactions. Thermal behavior was modeled in COMSOL Multiphysics® using the Heat Transfer Module with weld heat input as a Gaussian pulse whereas structural behavior using ... En savoir plus

Boundary Value Effects on Migration Patterns in Hydraulically Fractured Shale Formations

T. Aseeperi[1]
[1]Department of Chemical Engineering, University of Arkansas, Fayetteville, AR, USA

During the hydraulic fracturing process, there can be possible re-activation of closed/sealed faults and natural fractures in the formation, which may lead to changes in the boundary conditions of the reservoir. While study models of shale gas formations have utilized the concept of a ... En savoir plus

压裂井生产过程中的应力场模拟

韦世明 [1], 陈冬 [1],
[1] 中国石油大学（北京）

油藏在生产过程中，地层中的孔隙压力下降，压力降由井筒开始向外传播，从而导致地应力场的分布发生变化，后期钻新井的最优位置将因此发生改变，所以必须明确生产过程中油藏地应力场的变化规律。不考虑储层的温度变化，所建模型只需要进行固体力学与达西渗流场的耦合。对于目前中国的油藏开发情况，地层渗透率较低，单个开发储层较薄，常采用压裂方式增产，将储层看做纵向均质的地层，因此可以使用二维模型。建立地层为 300m×300m 的矩形区域，井筒为 0.1m 的圆形区域，二者差集为所建的模型。对整个模型区域施加固体力学场和 Darcy 渗流场。因为设置求解应力场为应力的变化量 ... En savoir plus

Solving the Inverse Problem of Resonant Ultrasound Spectroscopy on Dumbbell-shaped Compression Samples Using COMSOL Multiphysics®

M. C. Golt[1]
[1]U.S. Army Research Laboratory*, Aberdeen Proving Ground, MD, USA
*Contracted through Dynamic Science, Inc.

The dumbbell geometry is an ideal shape for testing the compressive strength of advanced ceramic materials. This paper details the combined use of COMSOL Multiphysics® and LiveLink™ for MATLAB® for determining the elastic properties of dumbbell-shaped samples by measuring their acoustic ... En savoir plus

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