Output Displacement Analysis of Symmetric Four-Bar Mechanism with Right Angle Flexible Hinge

2013 ◽  
Vol 798-799 ◽  
pp. 321-324
Author(s):  
Lei He ◽  
Chuan Yi Lv ◽  
Xian Hai Yang
Keyword(s):  
Structural Characteristics ◽  
Beam Deflection ◽  
Beam Model ◽  
Deflection Curve ◽  
Element Analysis ◽  
Output Displacement ◽  
The Finite Element Analysis ◽  
Beam Output ◽  
The Right ◽  
Curve Equation

in order to analyze the guide beam output displacement of the right-angle flexure hinge symmetrical four-bar mechanism, a half beam model was established based on the special structural characteristics and deformation characteristics. The formula of guiding displace were derived using approximate beam deflection curve equation. The finite element analysis of the model was carried out by ANSYS, it analyzed the cause of the theoretical value and simulation value for different reasons.

Design and experiment of a jetting dispenser with compact amplifying mechanism and low stress in piezostack

2020 ◽  
Vol 31 (5) ◽  
pp. 788-798
Author(s):  
Lingyun Wang ◽  
Xiang Huang ◽  
Siying Lin ◽  
Zhenxiang Bu ◽  
Hang Jin ◽  
...  
Keyword(s):  
Internal Stress ◽  
Droplet Diameter ◽  
Experimental System ◽  
Microelectronic Packaging ◽  
Element Analysis ◽  
Output Displacement ◽  
The Finite Element Analysis ◽  
Working Principle ◽  
Amplification Mechanism ◽  
Compact Design

This article introduced a piezostack-driven jetting dispenser for a microelectronic packaging process. The dispenser had a compact displacement amplification module using two piezostack actuators for achieving compact design and maintaining high jetting performance and improving internal stress on the piezostack actuators. In this article, a working principle of a jetting dispenser configuration was introduced and was followed by the presentation of a displacement amplification mechanism using a cylindrical pivot. The dimensions of the amplification mechanism were determined based on a theoretical calculation of the system and the finite element analysis results. The internal stress of the piezostack and the output displacement of the dispenser were investigated at different operational frequencies. The experimental system with the jetting dispenser was manufactured, and the system performance was verified experimentally. For evaluating the performance, a mixed glycerol/ethanol was used for the dispensing fluid. The jetting system in this study achieved an ideal jetting performance at a jetting frequency of 350 Hz and a droplet diameter of 0.42 mm.

scholarly journals Rapid Design and Analysis of Microtube Pneumatic Actuators Using Line-Segment and Multi-Segment Euler–Bernoulli Beam Models

Micromachines ◽  
2019 ◽  
Vol 10 (11) ◽  
pp. 780 ◽  
Author(s):  
Myunggi Ji ◽  
Qiang Li ◽  
In Ho Cho ◽  
Jaeyoun Kim
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Line Segment ◽  
Beam Model ◽  
Element Analysis ◽  
Pneumatic Actuators ◽  
Design And Optimization ◽  
Rapid Design ◽  
The Finite Element Analysis ◽  
Soft Actuators

Soft material-based pneumatic microtube actuators are attracting intense interest, since their bending motion is potentially useful for the safe manipulation of delicate biological objects. To increase their utility in biomedicine, researchers have begun to apply shape-engineering to the microtubes to diversify their bending patterns. However, design and analysis of such microtube actuators are challenging in general, due to their continuum natures and small dimensions. In this paper, we establish two methods for rapid design, analysis, and optimization of such complex, shape-engineered microtube actuators that are based on the line-segment model and the multi-segment Euler–Bernoulli’s beam model, respectively, and are less computation-intensive than the more conventional method based on finite element analysis. To validate the models, we first realized multi-segment microtube actuators physically, then compared their experimentally observed motions against those obtained from the models. We obtained good agreements between the three sets of results with their maximum bending-angle errors falling within ±11%. In terms of computational efficiency, our models decreased the simulation time significantly, down to a few seconds, in contrast with the finite element analysis that sometimes can take hours. The models reported in this paper exhibit great potential for rapid and facile design and optimization of shape-engineered soft actuators.

The Finite Element Analysis and Optimization of Subway Steel Structure Work Platform Based on Workbench and Pro/E in a Subway

2012 ◽  
Vol 538-541 ◽  
pp. 2953-2956
Author(s):  
Ya Li ◽  
Guang Sheng Ren
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Structural Characteristics ◽  
Steel Structure ◽  
Strength Analysis ◽  
Element Analysis ◽  
Maximum Deformation ◽  
Software Model ◽  
The Finite Element Analysis ◽  
Calculation Results

The static and stability analysis of steel structure were taken according to steel structure work platform’s requirements and structural characteristics in a subway parking space by using the software model which is established by Pro/E software and implanted into the finite element analysis software ANSYS Workbench. The maximum deformation and stress in design load of the steel structure were calculated and the linear stress strength analysis of the key parts was carried out, also both the analysis and testing of the supporting pillar’s stability were performed. The results show that the structure model established by Pro/E and the calculation method are reasonable. Moreover, the calculation results are of high accuracy. The profile size is properly chosen and the structure bearing capacity and deformation meet the design requirements.

Driving Characteristics of a Simple Square-Frame Ultrasonic Motor

2011 ◽  
Vol 110-116 ◽  
pp. 210-216
Author(s):  
J.W. Kim ◽  
C.H. Park ◽  
S.S. Jeong ◽  
M.H. Kim ◽  
T.G. Park ◽  
...  
Keyword(s):  
Elastic Body ◽  
Ultrasonic Motor ◽  
Resonance Mode ◽  
Optimal Size ◽  
Analysis Program ◽  
Bending Vibrations ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
The Right ◽  
Novel Design

A novel design of a simple square-frame USM (ultrasonic motor) was proposed. The stator of the motor consists of a square-frame shape elastic body and four rectangular plate ceramics. The four ceramics were attached to outer surfaces of the square-frame elastic body. The same phase voltages were applied to the ceramics on horizontal surfaces, and 90 degree phase difference voltages were applied to the ceramics on vertical surfaces. When the four outer edges of stator were clamped, the bending vibrations of the right angled bars were transformed into travelling vibrations and elliptical displacements were generated at the center of the bars. To find an optimal size of a stator, that generates elliptical displacement at the centers of the inner surfaces, the finite element analysis program ATILA was used. The analyzed results were compared to the experimental results. As result, the model EL10W3T0.5_CL7 which generates the maximum elliptical displacement was chosen by analyzing the resonance mode according to changes in frequency.

Optimization of Top Steel-Tube Truss Construction Platform of Silo and Fitting of Curve Equation

2013 ◽  
Vol 405-408 ◽  
pp. 856-860
Author(s):  
Hai Long Zhao ◽  
Wen Xing Wang ◽  
Tie Cheng Wang ◽  
Qin Shan Li
Keyword(s):  
Finite Element Analysis ◽  
Bearing Capacity ◽  
Steel Tube ◽  
Displacement Curve ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Maximal Displacement ◽  
Different Diameters ◽  
Joint Loads ◽  
Curve Equation

The influence of length of chord and depth of truss on displacement and bearing capacity of truss construction platform was evaluated based on the results of the finite element analysis on eight different diameters of the top steel-tube truss construction platform of silo. The bearing capacity increases with increasing of depth of truss. The bearing capacity increases with decreasing of length of chord. The maximal displacement increases with increasing of the diameter in the same joint loads, and the displacement curve of model fits better.

Optimum Slide-Way Structural Design for a New Polarized Scattering Instrument

2013 ◽  
Vol 706-708 ◽  
pp. 888-891
Author(s):  
Chien Jong Shih ◽  
Tso Liang Teng ◽  
Cho Chung Liang ◽  
Yong An Huang
Keyword(s):  
Structural Design ◽  
Volume Fraction ◽  
Mechanical Design ◽  
Structural Characteristics ◽  
Engineering Application ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Optimum Material ◽  
Material Volume ◽  
Structural Volume

A new polarized scattering instrument is presented in this paper. The finite element analysis has been used to examine the static performances of this instrument so as to capture necessary structural characteristics. Consider the structural volume and tip deflection as objectives, a double-loop of topological and parametric optimization has been developed that result in the optimum material distribution and volume fraction. Such an optimum structure is further modified to a solid model for the optimum product design. The final results show that the tip deflection and material volume can evidently be improved consequently. The presented process of mechanical design skill can provide for creative mechanical engineering application.

Vibration Forecast and Vibration Attenuation Research of the Finished Motorcycle Based on Virtual Analysis

2014 ◽  
Vol 705 ◽  
pp. 122-125
Author(s):  
Zi Qing Meng ◽  
Ming Li
Keyword(s):  
Finite Element ◽  
Dynamic Response ◽  
High Speed ◽  
Structural Characteristics ◽  
Element Model ◽  
Analysis Model ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Vibration Attenuation ◽  
Response Equation

as the high-speed vehicle, motorcycle vibration has an important influence on driving security, comfort, and handling stability. Therefore, this article builds the finite element analysis model of vibration forecast and damping of the finished motorcycle based on the structural characteristics. The major contents include main part modeling, boundary condition, and the finite element model of the finished motorcycle. In the paper, we build the finite dynamic response equation through analyzing the dynamic response, and research the resonance from different directions that caused by the engine harmonic response. Moreover, this article provides the vibration attenuation plan of the motorcycle structural modification and proves the feasibility through the analog computation and experimental measurement.

The Finite Element Analysis of CLAC Beam

2012 ◽  
Vol 468-471 ◽  
pp. 2491-2494
Author(s):  
Chuang Du ◽  
Xian Rong ◽  
Xue Jun Liu
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Cross Section ◽  
Flexural Behavior ◽  
Deflection Curve ◽  
Element Analysis ◽  
Aggregate Concrete ◽  
Linear Finite Element ◽  
The Finite Element Analysis ◽  
Load Deflection Curve

In this paper, a comprehensive numerical investigation is presented on the behaviour of ceramsite light aggregate concrete(CLAC) beam by the non-linear finite element method. The investigation includes the entire process of the beam from loading to failure. Numerical analysis results show that the flexural behavior of CLAC beam is obtained by numerical simulation,including load-deflection curve, cross section stress and crack development ect. Numerical simulation may replace the actual experiment for study on flexural behavior of CLAC beam.

A Novel Approach of Solving Output Displacement of Compliant Mechanism Based on Integration Method

2019 ◽  
Vol 11 (1) ◽  
pp. 72-79
Author(s):  
Jinliang Gong ◽  
Xiang Li ◽  
Yanfei Zhang ◽  
Kazi Mostafa
Keyword(s):  
Compliant Mechanism ◽  
Superposition Principle ◽  
Small Deformation ◽  
Parametric Model ◽  
Geometric Parameters ◽  
Relational Model ◽  
Deflection Curve ◽  
Element Analysis ◽  
Flexible Hinge ◽  
Output Displacement

Background: Micro-positioning platform is a device with high accuracy of positioning and a certain range of motion. Accuracy of the micro-positioning mechanism is ensured by using a flexible hinge to replace the traditional motion pair. Objective: A two-dimensional micro-positioning platform is proposed in this study. It is necessary to find out how the geometric parameters affect the output displacement of the amplification structure component. Thus, this paper aims to build up the relation model of stiffness and geometric parameters. Method: A novel method for building the relational model of parameters and output displacement is introduced on the basis of the superposition principle of small deformation and the principle of deflection. Firstly, the amplification structure is divided into different units according to the section shape and force. Secondly, the parametric model of integral deflection curve of the amplification structure is solved. The method is based on the flexibility matrix of the flexible hinge unit and the differential equation of the deflection curve of the rectangular unit. Finally, the parametric model of output displacement is established by using the integral deflection curve equation and geometric relationship between adjacent deformations of the compliant structure. Result: It is shown that the output displacements by analysis method are close to the results achieved by the ANSYS software, with a maximal difference of 15.3%. The reason is that the integral deflection curve is not smooth at some special points, which is verified by finite element analysis.

Modal Analysis of the Boom System of Truck-Mounted Concrete Pump

2011 ◽  
Vol 403-408 ◽  
pp. 3620-3625
Author(s):  
Xin Xiang Zhou ◽  
Chang Lu Xu ◽  
Nan Nan Ren ◽  
Shu Jun Guo ◽  
Rong Liang Tian
Keyword(s):  
Finite Element ◽  
Modal Analysis ◽  
Structural Characteristics ◽  
Three Dimensional ◽  
Mode Shapes ◽  
Element Analysis ◽  
High Effect ◽  
The Finite Element Analysis ◽  
Solid Works ◽  
Concrete Pump

This In this paper, we study the boom of truck-mounted concrete pump, we determine that the four booms extending horizontally is the most dangerous working conditions. This paper bases on Pump arm boom functional and structural characteristics, strength, stiffness, stability. By Finite element method, the dynamic characteristics of arm pump is analysed. we use Solid Works to design three-dimensional entity. and, in the finite element analysis of Solid Works plug-in Cosmos Work environment we finish the theoretical modal analysis. We get its top ten natural frequencies and mode shapes, and analyze the results .This method is designed for high effect and quality Pump arm boom ,providing precise reliable data.

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