A Miniature Silicon Condenser Microphone Improved with a Flexure Hinge Diaphragm and a Large Back Volume

2007 ◽  
Vol 1052 ◽  
Author(s):  
Hyejin Kim ◽  
Sung Q Lee ◽  
Jaewoo Lee ◽  
Sangkyun Lee ◽  
Kangho Park
Keyword(s):  
Finite Element Analysis ◽  
Flexure Hinge ◽  
Element Analysis ◽  
Back Volume ◽  
Condenser Microphone ◽  
Impedance Characteristics ◽  
The Finite Element Analysis ◽  
Silicon Microphone ◽  
Mems Technology ◽  
Simulation Results

AbstractWe have developed a miniature silicon condenser microphone improved with a spring supported hinge diaphragm and a large back volume, which is designed in order to increase sensitivity of microphones. MEMS Technology has been successfully applied to miniature silicon capacitive microphones, and we fabricated the smallest condenser silicon microphone in the presented reports. We used the finite-element analysis (FEA) to evaluate mechanical and acoustic performances of the condenser microphone with a flexure hinge diaphragm. From the simulation results, we confirmed that the sensitivity of a flexure hinge diaphragm can be improved about 285 times higher than a flat diaphragm. The first and second modes occurred at 15,637Hz and 24,387Hz, respectively. The areas of the miniature condenser microphones with a hinge diaphragm are 1.5 mm × 1.5 mm. We measured the impedance characteristics and sensitivities of the fabricated condenser microphones. The sensitivities of microphones are around 12.87 μV/Pa (-60 dB ref. 12.5 mV/Pa) at 1 kHz under a low bias voltage of 1 V, and the frequency response is flat up to 13 kHz.

Fabrication and Characteristics of Silicon Bridge Magnetic Sensor Based on Cantilever Beam

2014 ◽  
Vol 609-610 ◽  
pp. 1088-1093
Author(s):  
Lei Li ◽  
Xiao Feng Zhao ◽  
Yang Yu ◽  
Dian Zhong Wen ◽  
Jing Ya Cao ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Cantilever Beam ◽  
Thin Film Transistors ◽  
Wheatstone Bridge ◽  
Magnetic Sensor ◽  
Element Analysis ◽  
Microelectromechanical System ◽  
The Finite Element Analysis ◽  
Mems Technology ◽  
Simulation Results

A silicon bridge magnetic sensor based on cantilever beam is presented in this paper. Thesensor is composed of the Wheatstone bridge that made up of nano-polysilicon thin-film transistors(TFTs) and a ferromagnetic magnet adhered to the free end of cantilever beam. Through building thesimulation model, the finite element analysis of the sensor is carried out by using ANSYS software.The results show that this sensor can realize the measurement to the external magnetic field. Accordingto the simulation results, fabrication and packaging of the sensor chip are achieved by using the microelectromechanical system (MEMS) technology. Experiment result shows that when the supply voltageis 3.0 V, the sensitivity of the sensor is 94 mV/T.

Distortion Simulation of Unsymmetrical Composite Laminates Using the Finite Element Analysis Method

2007 ◽  
Vol 546-549 ◽  
pp. 1563-1566
Author(s):  
Min Li ◽  
Bao Yan Zhang ◽  
Xiang Bao Chen
Keyword(s):  
Experimental Data ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Composite Laminates ◽  
Shell Element ◽  
Element Analysis ◽  
Unsymmetric Laminates ◽  
The Finite Element Analysis ◽  
Simulation Results ◽  
The Difference

Unsymmetric composite laminates were benefit to reducing the structure weight of some aircrafts. However, the cured unsymmetric laminates showed distortion at room temperature. Therefore, predicting the deformation before using the unsymmetrical composite is very important. In this study an attempt was made to predict the shapes of some unsymmetric cross-ply laminates using the finite element analysis (FEA). The bilinear shell-element was adopted in the process. Then the simulation results were compared with the experimental data. The studies we had performed showed that the theoretical calculation agreed well with the experimental results, the predicted shapes were similar to the real laminates, and the difference between the calculated maximum deflections and the experimental data were less than 5%. Hence the FEA method was suitable for predicting the warpage of unsymmetric laminates. The error analysis showed that the simulation results were very sensitive to the lamina thickness, 2 α and (T.

scholarly journals Meat Cutting Machine Shaft Design and Analysis

2021 ◽  
Vol 328 ◽  
pp. 07003
Author(s):  
Cipto Cipto ◽  
Klemens A. Rahangmetan ◽  
Christian Wely Wullur ◽  
Farid Sariman ◽  
Hariyanto Hariyanto
Keyword(s):  
Finite Element Analysis ◽  
Load Capacity ◽  
Maximum Load ◽  
Analysis Method ◽  
Maximum Displacement ◽  
Element Analysis ◽  
Finite Element Analysis Method ◽  
Cutting Machine ◽  
The Finite Element Analysis ◽  
Simulation Results

This study analyzes the maximum load on the shaft construction with a diameter of 12 mm and a length of 581 mm. The shaft is designed as a shaft for cutting meat with a capacity of 5 kg. The analysis was performed using the finite element analysis method included in the Autodesk software. According to mathematical calculations, the shaft is considered safe because the value of the admissible tension τa = 7.380 kg / mm2 is greater than the maximum tension τp 5.62 kg / mm2. Based on the simulation results of the test, the shaft experiences a maximum off-stress of 61.89 MPa, a maximum displacement of 0.07715 mm, , and a safety factor of 3.34 µl so that the shaft is classified as safe for use with a Load capacity of 5 Kg

Analysis of Cold Preforming Process for Hollow Fasteners with Thin Flange

2013 ◽  
Vol 418 ◽  
pp. 246-249
Author(s):  
Ting Ping Chang ◽  
Shyh Chour Huang ◽  
Te Fu Huang ◽  
Thanh Phong Dao
Keyword(s):  
Finite Element Analysis ◽  
Deformation Behavior ◽  
Cold Forging ◽  
Forming Process ◽  
Element Analysis ◽  
Forging Process ◽  
Plastic Deformation Behavior ◽  
The Finite Element Analysis ◽  
Simulation Results ◽  
Future Work

This paper aims to study and detect the imperfects of the hollow fasteners with thin flange during cold forging process. In this study, the finite element analysis (FEA) based on 3-D DEFORMTM software to investigate the plastic deformation behavior of the hollow fasteners with thin flange. The simulation results showed that there is a folding phenomenon, which is occurring in the forming process. As a result, it revealed that with using FEA, the imperfects of forming hollow fasteners with the thin flange can be correctly predicted. From that, the occurrence of defects can be effectively prevented in the actual fabricating process. Future work will include an investigation into the optimization of the mold geometric parameters during cold pre-forming process for hollow fasteners with thin flange by comparing the simulative and experimental results.

Finite Element Analysis of the Mechanical Structure in Portable Exoskeleton Based on DOF Coupling

2013 ◽  
Vol 706-708 ◽  
pp. 1140-1145
Author(s):  
Fang Liu ◽  
Wen Ming Cheng ◽  
Yi Zhou
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Human Motion ◽  
Analysis Model ◽  
Human Body Model ◽  
Element Analysis ◽  
Standard Format ◽  
Mechanical Structure ◽  
The Finite Element Analysis ◽  
Simulation Results

Since the posture of portable exoskeleton is consistent with human motion and each joint degree of freedom is same, on the basis of DOF coupling in portable exoskeleton, the finite element analysis of the mechanical structure in portable exoskeleton has been calculated. According to the anthropomorphic mechanism design method, the universal joint structure has been used to meet the requirements of degrees of freedom in the mechanical structure of the exoskeleton; using the Hydraulic cylinder to simulate the contraction or stretch of human muscle, and the three-dimensional model of the exoskeleton mechanical systems has been created with the Solidworks software; selecting Human CAD software and setting the parameters of the movement of the human body model, the variations of the various joints can be obtained; using the Parasolid as the standard format for data transfer between the two software Solidworks and ANSYS, the finite element analysis model was established, and according to the principle of coupling, the three translational DOF and two rotating DOF was coupled, besides through both legs vertical standing, one knee kneeling, and one leg vertical standing three conditions, the exoskeleton strength was analyzed. The simulation results show that under the three conditions, a concentrated stress all has been found in the exoskeleton structure, besides the concentrated stresses all have been obtained in the cross-section changing site or the junction of the two components, which stress values exceeded the allowable stress values of the aluminum alloy material, so the suggestions for improvement of the structure are put forward in the article; at the same time, the simulation results provide a numerical basis for the optimization of the portable exoskeleton structure.

Force Analysis and Optimal Design of Propeller for Garbage Powder Mixer

2011 ◽  
Vol 422 ◽  
pp. 438-442
Author(s):  
Mei Fa Huang ◽  
Wei Zhao Luo ◽  
Guang Qian
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optimal Design ◽  
Stress Analysis ◽  
Maximum Stress ◽  
Working Condition ◽  
Force Analysis ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Simulation Results

Propeller is one of the critical parts in garbage powder mixer and affect significantly to the performance. In order to obtain a more reasonable structure, force analysis and stress analysis is carrier out for the propeller based on the actual working condition. Optimal design for the propeller is implemented by the results of stress analysis. To verify the rationality and feasibility of this mechanism, the finite element analysis for the propeller is performed by using the ANASYS software. The simulation results show that the maximum stress of the propeller is on the joint of blade and rod. The optimized propeller is satisfied with the strength requirements.

Modal Analysis of 160KVA Dry-Type Transformer Based on ANSYS

2012 ◽  
Vol 229-231 ◽  
pp. 919-922
Author(s):  
Bao Dong Bai ◽  
Guo Hui Yang ◽  
Bing Yin Qu ◽  
Jian Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Modal Analysis ◽  
Noise Level ◽  
Natural Frequencies ◽  
Analysis Software ◽  
Element Analysis ◽  
The Core ◽  
The Finite Element Analysis ◽  
Simulation Results

In this paper, the modal analysis was carried out on the core and cavity of a 160KVA dry-type transformer based on the finite element analysis software of ANSYS. And the simulation results of the natural frequencies and modal shapes were obtained, which provided a theoretical guidance to the design of the transformer structure, and were meaningful to reduce the vibration and noise level of the transformer.

Pressure Capacity Study of Φ100 Reinforced Thermoplastic Pipe

2019 ◽  
Vol 944 ◽  
pp. 867-872
Author(s):  
Lin Wang ◽  
Yu Ran Fan ◽  
Peng Song
Keyword(s):  
Finite Element Analysis ◽  
Experimental Study ◽  
Finite Element ◽  
Small Deviation ◽  
Experimental Result ◽  
Burst Pressure ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Simulation Results ◽  
Structural Layer

The pressure capacity of reinforced thermoplastic pipe was studied by the finite element analysis and experimental study using Φ100 reinforced thermoplastic pipes. The simulation results illustrated that the failure mode of reinforced thermoplastic pipe under internal pressure was the break of glass fiber belt in structural layer. Moreover, the simulated burst pressure fitted well with the experimental result, the small deviation between two results may be resulted from the process defects of RTP.

The Finite Element Analysis of Mechanical Behavior of New Connection

2014 ◽  
Vol 1065-1069 ◽  
pp. 1281-1284
Author(s):  
Chun Gang Wang ◽  
Xu Wang ◽  
Guo Chang Li ◽  
Jin Guo Wu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanical Behavior ◽  
New Wave ◽  
Calculation Methods ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Simulation Results ◽  
Vibration Wave ◽  
Better Than

Purlin connections have important influence on the stiffness, bearing capacity and the purlin calculation methods. A new kind of purlin connection was put forward in this paper. The mechanical behavior of the new connection was studied by finite element analysis using software ANSYS. As can be seen from the simulation results, the new connection can enhance the stiffness of purlin, and effect of each new wave connection is better than the promotion of purlin stiffness in the vibration wave connection. New connection has a better promotion effect for small stiffness of purlin.

The Finite Element Analysis of a New Type Reinforcement Form of Light Steel Ceiling

2014 ◽  
Vol 1065-1069 ◽  
pp. 1277-1280
Author(s):  
Zhuang Nan Zhang ◽  
Zhen Dong Tan ◽  
Guo Chang Li
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Element Methods ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
New Type ◽  
Simulation Results

This paper puts a form of reinforcement with used finite element methods to carry on the numerical simulation of a new type reinforcement form of light steel ceiling. Compared with the ordinary ceiling, the new reinforcement form of light steel ceiling can greatly improve the capacity of the ceiling sideways resistance with the overall strong stiffness from the simulation results.

Sign in / Sign up

Export Citation Format

Share Document