scholarly journals 3D Simulation-Based Acoustic Wave Resonator Analysis and Validation Using Novel Finite Element Method Software

Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2715
Author(s):  
Ruth Yadira Vidana Morales ◽  
Susana Ortega Cisneros ◽  
Jose Rodrigo Camacho Perez ◽  
Federico Sandoval Ibarra ◽  
Ricardo Casas Carrillo
Keyword(s):  
Finite Element ◽  
High Performance ◽  
Cloud Services ◽  
3D Simulation ◽  
3D Simulations ◽  
Acoustic Resonators ◽  
Analysis And Design ◽  
Wave Resonator ◽  
Film Bulk ◽  
Simulation Results

This work illustrates the analysis of Film Bulk Acoustic Resonators (FBAR) using 3D Finite Element (FEM) simulations with the software OnScale in order to predict and improve resonator performance and quality before manufacturing. This kind of analysis minimizes manufacturing cycles by reducing design time with 3D simulations running on High-Performance Computing (HPC) cloud services. It also enables the identification of manufacturing effects on device performance. The simulation results are compared and validated with a manufactured FBAR device, previously reported, to further highlight the usefulness and advantages of the 3D simulations-based design process. In the 3D simulation results, some analysis challenges, like boundary condition definitions, mesh tuning, loss source tracing, and device quality estimations, were studied. Hence, it is possible to highlight that modern FEM solvers, like OnScale enable unprecedented FBAR analysis and design optimization.

Analysis and Design of Smart Structures to Control Vibration and Noise

2007 ◽  
Author(s):  
Ulrich Gabbert ◽  
Jean Lefe`vre ◽  
Tamara Nestorovic´ ◽  
Stefan Ringwelski
Keyword(s):  
Finite Element ◽  
Smart Materials ◽  
Piezoelectric Actuators ◽  
Element Model ◽  
Industrial Applications ◽  
Measured Data ◽  
Analysis And Design ◽  
Lightweight Structures ◽  
Simulation Results ◽  
Acoustic Fluid

The paper presents an overall analysis and design approach for smart lightweight structures to actively reduce vibration and noise. As smart materials, distributed piezoelectric patches are attached to the structure. The basis of the approach is an overall finite element model, which includes the structure itself, the acoustic fluid, the piezoelectric actuators and sensors as well as the controller. As a test example a smart acoustic box is simulated and the simulation results are compared with measured data. Finally, also industrial applications are briefly presented.

Study on the Simulation of Anti-Flood Spiral Pile-Driven Process

2013 ◽  
Vol 353-356 ◽  
pp. 2527-2530
Author(s):  
Hong Chen Pang ◽  
Yu Xing Wang ◽  
Yan Qin Tang ◽  
Han Dong Huang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Large Deformation ◽  
Flood Control ◽  
Element Model ◽  
Scientific Basis ◽  
Sph Method ◽  
Analysis And Design ◽  
Fem Method ◽  
Simulation Results

Pile-driven operation is the essential means of flood control and river harnessing. Anti-flood Spiral Pile is an innovative flood fighting and rescue equipment. Based on the experiment, established the spiral pile finite element model in FEM method and constructed the soil model with SPH smooth particles, set the keywords and parameters by using LS-DYNA softwares own processor, and then, the large deformation (soil extrusion and shearing status, etc.) and stress conditions be simulated truthfully. With reference to the experiment, the simulation results of SPH method with ALE method was contrasted, which could provide a reliable reference and scientific basis for the subsequent analysis and design of the spiral pile.

scholarly journals Finite element modelling of UHPC under pulsating load using X-ray computed tomography based fiber distributions

2021 ◽  
Vol 55 (1) ◽  
Author(s):  
Nikolaos Mellios ◽  
Tyler Oesch ◽  
Panagiotis Spyridis
Keyword(s):  
Computed Tomography ◽  
Finite Element ◽  
High Performance ◽  
High Performance Concrete ◽  
Mechanical Tests ◽  
Ct Scanner ◽  
X Ray ◽  
Analysis And Design ◽  
Failure Patterns ◽  
X Ray Computed

AbstractThe benefits of including fibers in ultra-high performance concrete (UHPC) are attributed to their good bond with the matrix and, hence, an optimal utilization of their properties. At the same time, though, fiber reinforcement may contribute to anisotropy in the composite material and induce weak areas. The influence of the fibers’ orientation on the material properties is a matter of current scientific discourse and it is known to play a vital role in structural design. In the case studies presented herein, mechanical laboratory tests using pulsating load regimes on UHPC with a strength of more than 200 MPa were simulated by use of finite element models. The orientations of the fibers were measured for each test sample prior to failure using an X-ray computed tomography (CT) scanner, and these orientations are explicitly implemented into the model. The paper discusses the methodology of merging data retrieved by CT image processing and state-of-the-art FE simulation techniques Moreover, the CT scanning was carried out throughout the testing procedure, which further enables the comparison of the mechanical tests and the FE models in terms of damage propagation and failure patterns. The results indicate that the overall fiber configuration and behavior of the samples can be realistically modelled and validated by the proposed CT-FE coupling, which can enhance the structural analysis and design process of elements produced with steel fiber reinforced and UHPC materials.

Comparison of 2.5D and 3D Simulation Methods for Limiting Electrode Debiasing of 4H-SiC Interdigitated Devices

2016 ◽  
Vol 858 ◽  
pp. 757-760
Author(s):  
Nicolas Thierry-Jebali ◽  
Thibault Kempf ◽  
Fabien Mandorlo
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Finite Elements ◽  
Simulation Method ◽  
3D Simulation ◽  
Pin Diode ◽  
Simulation Methods ◽  
3D Simulations ◽  
Element Method

This paper assesses the 2.5D simulation method for limiting the electrodes debiasing of interdigitated devices. This method uses both spice and finite element method simulations where a resistance grid models the electrodes and a 2D finite elements structure models the device. A lateral 4H-SiC PiN diode has been selected for this study. In order to assess this method, 2.5D simulation method has been compared to 3D simulations.

scholarly journals A high-performance multilevel inverter with reduced power electronic devices

2020 ◽  
Vol 11 (4) ◽  
pp. 1883
Author(s):  
Amer Chlaihawi ◽  
Adnan Sabbar ◽  
Hur Jedi
Keyword(s):  
Output Voltage ◽  
High Performance ◽  
Electronic Devices ◽  
Design Procedure ◽  
Multilevel Inverter ◽  
Power Electronic ◽  
Analysis And Design ◽  
Multilevel Inverters ◽  
Design Flexibility ◽  
Simulation Results

This paper introduces a new topology of multilevel inverter, which is able to operate at high performance. This proposed circuit achieves requirements of reduced number of switches, gate-drive circuits, and high design flexibility. In most cases fifteen-level inverters need at least twelve switches. The proposed topology has only ten switches. The inverter has a quasi-sine output voltage, which is formed by level generator and polarity changer to produce the desired voltage and current waveforms. The detailed operation of the proposed inverter is explained. The theoretical analysis and design procedure are given. Simulation results are presented to confirm the analytical approach of the proposed circuit. A 15-level and 31-level multilevel inverters were designed and tested at 50 Hz.

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