Structure Design and Simulation Analysis of Multiple Micro Piezoelectric Cantilevers

2013 ◽  
Vol 562-565 ◽  
pp. 1208-1213
Author(s):  
An Ran Jiang ◽  
Shi Qiao Gao ◽  
Feng Lin Yao ◽  
Yun Li He
Keyword(s):  
Resonant Frequency ◽  
Structural Design ◽  
Simulation Analysis ◽  
Structure Design ◽  
The Finite Element Method ◽  
Frequency Range ◽  
Piezoelectric Cantilever ◽  
Generation Capacity ◽  
Cantilever Array ◽  
Piezoelectric Cantilevers

In order to effectively capture the environment vibration energy, convert it into electricity and supply energy for the microelectronics devices, multiple micro piezoelectric cantilevers are designed. It is composed of more than one piezoelectric cantilever array, which broaden the resonant frequency band of the piezoelectric vibrator, and it can produce resonance or similar to the resonance in a frequency range. Compared to a single piezoelectric cantilever, multiple piezoelectric cantilevers can effectively broaden the resonant frequency and improve the piezoelectric power generation capacity. The simulation results show that the finite element method can provide important theoretical guidance for the structural design of multiple micro piezoelectric cantilevers.

Structural Design and Testing of a Butterfly Piezoelectric Generator with Multilayer Cantilever Beams

2013 ◽  
Vol 655-657 ◽  
pp. 823-829 ◽  
Author(s):  
Zhi Lin Ruan ◽  
Jun Jie Gong ◽  
Meng Chang Cai ◽  
Bing Huang
Keyword(s):  
Resonant Frequency ◽  
Cantilever Beam ◽  
Structural Design ◽  
Output Voltage ◽  
Experimental Setup ◽  
Cantilever Beams ◽  
Material Parameters ◽  
Piezoelectric Cantilever ◽  
Piezoelectric Generator ◽  
Design And Testing

In order to solve the inconsistent problem of multi-layer connection and vibration in each layer, a butterfly piezoelectric generator with multilayer cantilever beams is designed. The generator is mainly constituted by butterfly multilayer cantilever beams and mass subassembly two parts. Physical devices of butterfly generator and typical piezoelectric cantilever are fabricated respectively. The experimental setup is also put up for the testing of resonant frequency and output voltage. It can be found that each layer of multilayer generator has a similar output voltage and resonant frequency to the typical one with same geometric and material parameters. So each layer in butterfly piezoelectric generator can be simplified as a typical cantilever beam for researching and analyzing.

scholarly journals Finite element analysis for the lectotype of the large electronic truck scale structure

ACTA IMEKO ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 58
Author(s):  
Tieping Wei ◽  
Xingyang Zhou ◽  
Xiaoxiang Yang ◽  
Jinhui Yao
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Structural Design ◽  
Theoretical Basis ◽  
Measurement Accuracy ◽  
Influence Factor ◽  
Simulation Analysis ◽  
The Finite Element Method ◽  
Element Analysis ◽  
Main Influence

The stiffness of truck scales is the main influence factor on its measurement accuracy. Three kinds of SCS-100T large electronic truck scales are different in size arrangement of U-beam. Based on the finite element method, the models of the truck scales were established. The stiffness and strength of the scales were compared on account of the analysis results. The results show that U-beam arrangement of the low at both ends but high in the middle structure for the truck scale not only can save material but also meet the requirement of stiffness. Simulation analysis provides the theoretical basis for the structural design of truck scales.

scholarly journals Harmonic Overvoltage Analysis of Electric Railways in a Wide Frequency Range Based on Relative Frequency Relationships of the Vehicle–Grid Coupling System

Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6672
Author(s):  
Qiujiang Liu ◽  
Binghan Sun ◽  
Qinyao Yang ◽  
Mingli Wu ◽  
Tingting He
Keyword(s):  
Resonant Frequency ◽  
Simulation Analysis ◽  
Field Tests ◽  
Sampling Frequency ◽  
Wide Frequency Range ◽  
Switching Frequency ◽  
Stable Operation ◽  
Frequency Range ◽  
Traction Network ◽  
Coupling System

Harmonic overvoltage in electric railway traction networks can pose a serious threat to the safe and stable operation of the traction power supply system (TPSS). Existing studies aim at improving the control damping of grid-connected converters, neglecting the impedance frequency characteristics (IFCs) of the actual TPSS. The applicable frequency range of these studies is relatively low, usually no more than half of the switching frequency, and there is a large gap with the actual traction network harmonic overvoltage frequency range of 750 Hz–3750 Hz. In this paper, first, the IFCs of the actual TPSS in the wide frequency range of 150 Hz–5000 Hz are obtained through field tests, and the resonant frequency distribution characteristics of TPSS are analyzed. After that, the aliasing effect of the sampling process and the sideband effect of the modulation process of the digital control of the grid-connected converter are considered. Based on the relative relationships among the inherent resonant frequency of the TPSS, sampling frequency and switching frequency, an impedance matching analysis method is proposed for the wide frequency range of the vehicle–grid coupling system. By this method, the sampling frequency and switching frequency can be decoupled, and the harmonic overvoltage of traction network in the frequency range of two times switching frequency and above can be directly estimated. Finally, the method proposed in this paper is validated by the comparative simulation analysis of seven different cases.

Six-Axis Folding Frame Structure Design and Research

2015 ◽  
Vol 741 ◽  
pp. 159-162
Author(s):  
Fan Bo Meng ◽  
Hong Bin Liu
Keyword(s):  
Structural Design ◽  
Simulation Analysis ◽  
Structural Strength ◽  
Three Dimensional ◽  
Structure Design ◽  
Frame Structure ◽  
Three Dimensional Model ◽  
Physical Prototype ◽  
3D Software ◽  
Reasonable Use

For the shortcomings of existing multi-axis aircraft rack design a new folding mechanism of the machine arm, and then design a six-axis folding rack. By calculating the structural strength of the machine arm and apply engineering analysis software for the six-axis folding rack mechanics simulation analysis to verify its structural design is reasonable. Use 3D software to build a three-dimensional model of the six-axis folding rack, and use rapid prototyping technology, access to the kind of physical prototype six-axis folding rack, after the actual test, consistent with mission requirements.

scholarly journals Modeling and Analysis of Multiple Attached Masses Tuning a Piezoelectric Cantilever Beam Resonant Frequency

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Yuejuan Li ◽  
Xulei Hou ◽  
Wei Qi ◽  
Qiubo Wang ◽  
Xiaolu Zhang
Keyword(s):  
Resonant Frequency ◽  
Cantilever Beam ◽  
Discrete Model ◽  
Experimental Investigations ◽  
Resonant Frequencies ◽  
Modeling And Analysis ◽  
Proposed Model ◽  
Piezoelectric Cantilever ◽  
Designed Experiment ◽  
Piezoelectric Cantilevers

Mechanical vibrations have been an important sustainable energy source, and piezoelectric cantilevers operating at the resonant frequency are regarded as one of the effective mechanisms for converting vibration energy to electricity. This paper focuses on model and experimental investigations of multiple attached masses on tuning a piezoelectric cantilever resonant frequency. A discrete model is developed to estimate the resonant frequencies’ change of a cantilever caused by multiple masses’ distribution on it. A mechanism consisted of a piezoelectric cantilever with a 0.3 g and a 0.6 g movable mass along it, respectively, is used to verify the accuracy of the proposed model experimentally. And another mechanism including a piezoelectric cantilever with two 0.3 g attached masses on it is also measured in the designed experiment to verify the discrete model. Meanwhile, the results from the second mechanism were compared with the results from the first one in which the single attached mass is 0.6 g. Two mechanisms have wildly different frequency bandwidths and sensitivities although the total weight of attached masses is the same, 0.6 g. The model and experimental results showed that frequency bandwidth and sensitivity of a piezoelectric cantilever beam can be adjusted effectively by changing the weight, location, and quantity of attached masses.

scholarly journals Modeling, Simulation and Performance Analysis of Multichannel Mems Piezoelectric Cantilevers for Cochlear Implantable Module

2021 ◽  
Vol 11 (2) ◽  
pp. 510-530
Author(s):  
J. Abdul Aziz Khan ◽  
P. Shanmugaraja ◽  
S. Kannan
Keyword(s):  
Von Mises Stress ◽  
Frequency Range ◽  
Piezoelectric Cantilever ◽  
Audible Frequency ◽  
And Performance ◽  
Piezoelectric Cantilevers ◽  
Von Mises ◽  
Implantable Sensor ◽  
Complete Frequency ◽  
The Brain

This work presents the enhanced area-efficient Multi-channel MEMS (Micro-Electrical Mechanical System) piezoelectric cantilever device (PCD) for a fully cochlear implantable sensor that works within the audible frequency range of 300-4800 Hz. The sound pressure level (SPL) of 95 dB, 100 dB, and 110 dB input is given in order to resonates the audible frequency range of the device which is placed on the eardrum. This stimulates the auditory nerve via the cochlea to send information to the brain. As a result, the Multi-channel MEMS piezoelectric cantilever device generates the highest potential voltage of 870 mV at 110-dB SPL and is detected under the excitation of 300 Hz. The output parameters such as von Mises stress, displacement, and the complete frequency bandwidth performance are analyzed using COMSOL Multiphysics.

Analysis on Vibration Characteristics of PSM Induction Synchronization Segment Based on Finite Element

2014 ◽  
Vol 556-562 ◽  
pp. 763-766
Author(s):  
Wei Chen ◽  
Qing Xuan Jia ◽  
Han Xu Sun ◽  
Si Cheng Nian
Keyword(s):  
Finite Element ◽  
Natural Frequency ◽  
Structural Design ◽  
Simulation Analysis ◽  
Vibration Characteristics ◽  
The Finite Element Method ◽  
Sorting Machine ◽  
Vibration Model ◽  
The Relationship ◽  
Operation Frequency

The vibration of the induction synchronization segment (ISS) have an important influence on the parcel loading accuracy and the service life of the parcel sorting machine (PSM). The vibration model of the ISS is established by using the finite element method. And the analysis of the structural design impact on the natural frequency of the ISS is provided. The relationship between the operation frequency and the natural frequency of the ISS is obtained by means of the modal simulation analysis. The vibration characteristics of the ISS can provide reference frame for the design.

Simulation Analysis of Thermodynamics on the Belt Spindle of the Machining Center

2013 ◽  
Vol 690-693 ◽  
pp. 3240-3243
Author(s):  
Qiang He ◽  
An Ling Li ◽  
Yong Zhang ◽  
Ye Jun ◽  
Xin Sheng Li
Keyword(s):  
Thermal Analysis ◽  
Finite Element ◽  
Temperature Rise ◽  
Structural Design ◽  
High Speed ◽  
Simulation Analysis ◽  
Element Model ◽  
The Finite Element Method ◽  
Machining Center ◽  
The Finite Element Model

By taking the belt spindle of the machining center high speed and high precision as the research object, using the finite element method, the Solidworks software is used to make the thermal analysis. In this paper, we define the boundary conditions and thermal load of the spindle thermal analysis, and establish the finite element model. The steady-state thermal analysis and temperature rise is simulated, and the temperature distribution is predicted by using Solidworks software. The results show that the structural design of the belt spindle is reasonable, and the temperature rise is in the control range.

scholarly journals Analysis of a Cantilevered Piezoelectric Energy Harvester in Different Orientations for Rotational Motion

Sensors ◽  
2020 ◽  
Vol 20 (4) ◽  
pp. 1206 ◽  
Author(s):  
Wei-Jiun Su ◽  
Jia-Han Lin ◽  
Wei-Chang Li
Keyword(s):  
Theoretical Model ◽  
Resonant Frequency ◽  
Rotational Motion ◽  
Axial Load ◽  
Energy Harvester ◽  
Excitation Frequency ◽  
Experimental Studies ◽  
Piezoelectric Energy ◽  
Piezoelectric Cantilever ◽  
Tip Mass

This paper investigates a piezoelectric energy harvester that consists of a piezoelectric cantilever and a tip mass for horizontal rotational motion. Rotational motion results in centrifugal force, which causes the axial load on the beam and alters the resonant frequency of the system. The piezoelectric energy harvester is installed on a rotational hub in three orientations—inward, outward, and tilted configurations—to examine their influence on the performance of the harvester. The theoretical model of the piezoelectric energy harvester is developed to explain the dynamics of the system and experiments are conducted to validate the model. Theoretical and experimental studies are presented with various tilt angles and distances between the harvester and the rotating center. The results show that the installation distance and the tilt angle can be used to adjust the resonant frequency of the system to match the excitation frequency.

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