scholarly journals An Analytical Method for Modelling Pull-In Effect during Anodic Bonding

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 969
Author(s):  
Qiuxu Wei ◽  
Bo Xie ◽  
Yulan Lu ◽  
Deyong Chen ◽  
Jian Chen ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Analytical Method ◽  
Anodic Bonding ◽  
Capacitive Sensors ◽  
Common Phenomenon ◽  
Sensors And Actuators ◽  
Element Analysis ◽  
Effect Model

Pull-in effect is a common phenomenon during anodic bonding, a key step in thefabrication processes of capacitive sensors and actuators. To assist the designs and fabrications ofthese transducers, this paper presents an analytical method for modelling the pull-in effect duringanodic bonding. The pull-in effect model was verified by finite element analysis and a verificationexperiment respectively. The verification results indicate that the analytical method for modellingthe pull-in effect during anodic bonding is capable for predicting pull-in voltages of anodicallybonded capacitive sensors and actuators in a universal and practical manner without any additionalfabrication process.

scholarly journals Stiffness prediction for bolted moment-connections in cold-formed steel trusses

2020 ◽  
Vol 41 (1) ◽  
Author(s):  
Apai Benchaphong ◽  
Rattanasak Hongthong ◽  
Sutera Benchanukrom ◽  
Nirut Konkong
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Analytical Method ◽  
Truss Structures ◽  
Rotational Stiffness ◽  
Element Analysis ◽  
Moment Connection ◽  
Rigid Connection ◽  
Cold Formed Steel ◽  
Steel Trusses

The purpose of this research was to study the behavior of cold-formed steel cantilever truss structures. A cantilever truss structure and bolt-moment connection were tested and verified by the 3D-finite element model. The verification results showed a good correlation between an experimental test and finite element analysis. An analytical method for elastic rotational stiffness of bolt-moment connection was proposed. The equation proposed in the analytical method was used to approximate the elastic rotational stiffness of the bolt group connection, and was also applied to the Richard-Abbott model for generating the nonlinear moment-rotation curve which modeled the semi-rigid connection stiffness. The 2D-finite element analysis was applied to study the behavior of the truss connection, caused by semi-rigid connection stiffness which caused a change of force to the truss elements. The results showed that the force in the structural members increased by between 13.62%-74.32% of the axial forces, and the bending moment decreased by between 33.05%-100%. These results strongly suggest that the semi-rigid connection between cold-formed steel cantilever truss structures should be considered in structural analysis to achieve optimum design, acknowledging this as the real behavior of the structure.

Research on Pulley Strain of Metal Belt CVT

2014 ◽  
Vol 952 ◽  
pp. 249-252
Author(s):  
Wu Zhang ◽  
Wei Guo ◽  
Fa Rong Kou ◽  
Yi Zhi Yang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Analytical Method ◽  
Compressive Strain ◽  
Continuously Variable Transmission ◽  
Transmission Ratio ◽  
Element Analysis ◽  
Variable Transmission

Pulley strain aggravated whole-Part abrasion, affected friction and lubricates state of metal belt continuously variable transmission. Pulley strain was analyzed by analytical method and finite element analysis. The results indicate that with the increase of transmission ratio, the driver pulley compressive strain is increases after reduces for a while, and the driven pulley increase. Compressive strain dense when radius is lesser and vice versa. Two methods results are basically the same, whereby demonstrating that the model is rational and that the analysis results are reliable.

Risk-Based Stability Assessment of a Gantry Crane

2014 ◽  
Author(s):  
Bin Xu ◽  
Zhongjian Yu ◽  
Yuqing Yang ◽  
Xiaoying Tang ◽  
Tao Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Analytical Method ◽  
Engineering Application ◽  
Structure Design ◽  
Gantry Crane ◽  
Stability Assessment ◽  
Element Analysis ◽  
Risk Elements ◽  
Assessment Approach

Stability of a gantry crane was a challenge in its structure design. A new risk-based stability assessment approach was proposed in this paper. Analytical method was introduced firstly, and then finite element method was adopted to evaluate the stability of square bar. In order to verify the finite element models, results of buckling analysis were compared with the results of analytical method. Secondly, this finite element analysis was applied in stability assessment of a gantry crane, and through parameterized analysis risk elements were identified. Finally, risk-based stability assessment was applied to this gantry crane, and neural network algorithm was adopted to evaluate the risk elements which were defined by finite element analysis. The evaluating results were well consistetent with statistical data, which indicated this risk-based stability assessment approach was reliable which showed a potential in engineering application.

Deflection Analysis of Non Prismatic Beam with Trapezoidal Sectorial Section with Uniformly Perpendicular Loading Condition

2016 ◽  
Vol 26 ◽  
pp. 1-10 ◽  
Author(s):  
Chetankumar M. Patel ◽  
Kartik D. Kothari ◽  
Ghanshyam D. Acharya
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Analytical Method ◽  
Loading Condition ◽  
Engineering Application ◽  
Complex Loading ◽  
Element Analysis ◽  
Prismatic Beam ◽  
Deflection Analysis ◽  
Analytical Result

Non-prismatic beams are extensively used for many engineering application. Due to varying section, deflection analysis becomes very complex. Loading condition also makes the whole theory complex. This paper shows analytical analysis for the deflection of trapezoidal sectorial section with uniformly perpendicular loading condition. The method illustrated is comparatively easy and can be applied for the similar other sections as well. Analytical method is validated using Finite Element Analysis using Creo Simulation which shows good amount of match with analytical result.

Finite element analysis of belt skew caused by angular misalignment of rollers

2004 ◽  
Vol 218 (10) ◽  
pp. 1223-1232 ◽  
Author(s):  
H Cheng ◽  
K Yoshida ◽  
S Yanabe
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Analytical Method ◽  
Simulation System ◽  
Maximum Efficiency ◽  
Finite Element Code ◽  
Angular Misalignment ◽  
Element Analysis ◽  
Optimal Position ◽  
Spiral Angle

In machines that handle flexible media with flat belts, it is necessary to prevent belt skew for the machines to operate at higher precision and maximum efficiency. However, the skewing mechanism has not yet been clarified. Therefore, in order to establish a method that could be used to analyse the skew of a flat belt, a simulation system is developed using a commercial finite element code (MARC). Also, the skew mechanism in two- and three-roller systems is also studied through simulations and clarified to show that the skew rate equals the spiral angle of the belt wrapping around the roller. Moreover, it is found that a steering roller that is set in an optimal position is needed to reduce belt skew efficiently. The analytical method and the findings from this study are useful in designing any flat-belt mechanism.

P‐35: An Analytical Method of Small‐Module Fracture Dropping Based on Finite‐Element Analysis

2021 ◽  
Vol 52 (1) ◽  
pp. 1196-1198
Author(s):  
Xiaohua Li ◽  
Lei Zhu ◽  
Qing Guo ◽  
Wei Zhou ◽  
Bingchuan Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Analytical Method ◽  
Element Analysis

Modified analytical method to calculate the assembly and separation forces of cantilever hook-type snap-fit

2019 ◽  
Vol 233 (14) ◽  
pp. 5074-5084 ◽  
Author(s):  
Bruno Robert Mose ◽  
In-Seo Son ◽  
Joon-Woo Bae ◽  
Hong-Geul Ann ◽  
Choon Yeol Lee ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Analytical Method ◽  
Previous Method ◽  
Experimental Investigations ◽  
Element Analysis ◽  
New Approach ◽  
The Face ◽  
Predicted Values ◽  
Separation Force

In this study, a new analytical method to calculate the assembly force and separation force of cantilever hook type snap-fit was proposed. Finite element analysis and experimental measurement were performed to verify the new approach. It was found out that the conventional analytical method had a few limitations. The solution was only applicable when the retention face angle was small, and there existed a critical value of retention face angle where separation force unreasonably decreased with increase in deflection. The new approach considered large deflection of retention feature and resultant moment term in addition to the previous method, and the solution was obtained explicitly. The new analytical solution could be applied to large face angles without any divergence, and showed good agreement with finite element analysis results. When the face angle was relatively small, both conventional method and new method showed reasonable results; however, when the angle was large, only the new analytical method showed reasonable results. Experimental investigations of forces during assembly and separation showed that the measured forces were much smaller than the predicted values by analytical methods and finite element analysis. The forces were strongly dependent on the rigidity of the mating part and the magnitude of radius at the edges of beam and mating parts. It was found from experiment that the separation force nonlinearly increased as clearance decreased.

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