Design of Flexible Membrane Fixture for Automobile Door-Trim Infra Stake Welding Machine

2019 ◽  
Author(s):  
Hong-Seok Park ◽  
Khash-Ochir Namjil
Keyword(s):  
New Technology ◽  
Geometric Model ◽  
Elastic Behaviour ◽  
Manufacturing Cost ◽  
Size Change ◽  
Element Analysis ◽  
Rubber Sheet ◽  
Flexible Membrane ◽  
The Finite Element Analysis ◽  
Parts Manufacturing

Abstract Flexible membrane fixture is new technology which can adapt to the workpiece shape and size change, such as automobile door-trim parts manufacturing. Due to the use of flexible membrane fixture, significantly reducing manufacturing cost and replacing fixture time. In this paper, the design of the flexible membrane fixture is generated, and the application is showed in a case. Natural rubber sheet used as a flexible membrane. The membrane inflation model generated by ANSYS using Mooney-Rivlin method and its simulation result compared with the experiment result. The door-trim model developed by AUTODESK INVENTOR modelling software. This 3-D geometric model was imported to using ANSYS Workbench 18.2. The Finite element analysis was done after assigning loading and boundary conditions. The applied load considered for this analysis is the pressure applied to the membrane while the door-trim clamped by side clamps. The result shows that Flexible membrane fixture has higher flexibility and fixtured door-trim has smaller deformation value than company requirement. Through comparing the design results, it is found that flexible membrane fixture has higher elastic behaviour.

scholarly journals Developing an Extended IFC Data Schema and Mesh Generation Framework for Finite Element Modeling

2019 ◽  
Vol 2019 ◽  
pp. 1-19
Author(s):  
Zhao Xu ◽  
Zezhi Rao ◽  
Vincent J. L. Gan ◽  
Youliang Ding ◽  
Chunfeng Wan ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Element Modeling ◽  
Mesh Generation ◽  
Geometric Model ◽  
Information Modeling ◽  
Element Analysis ◽  
Element Modeling ◽  
The Finite Element Analysis ◽  
Ifc Standard

Mesh generation plays an important role in determining the result quality of finite element modeling and structural analysis. Building information modeling provides the geometry and semantic information of a building, which can be utilized to support an efficient mesh generation. In this paper, a method based on BRep entity transformation is proposed to realize the finite element analysis using the geometric model in the IFC standard. The h-p version of the finite element analysis method can effectively deal with the refined expression of the model of bending complex components. By meshing the connection model, it is suggested to adopt the method of scanning to generate hexahedron, which improves the geometric adaptability of the mesh model and the quality and efficiency of mesh generation. Based on the extension and expression of IFC information, the effective finite element structure information is extracted and extended into the IFC standard mode. The information is analyzed, and finally the visualization of finite element analysis in the building model can be realized.

The Finite Element Analysis of a Heavy Semi-Trailer Frame Based on ANSYS

2014 ◽  
Vol 644-650 ◽  
pp. 455-458
Author(s):  
Yao Ye ◽  
Yong Hai Wu
Keyword(s):  
Finite Element ◽  
Geometric Model ◽  
Reference Method ◽  
Element Model ◽  
Element Analysis ◽  
Emergency Braking ◽  
The Finite Element Analysis ◽  
New Type ◽  
Stress And Deformation ◽  
3D Geometric Model

Frame has important effects on the performance of the whole of heavy semi-trailer. A heavy semi-trailer frame is analyzed and researched on in the finite-element way in this article. The frame of 3D geometric model is established by using Pro/E. And it was imported into the Hypermesh to establish frame finite element model. Frame are calculated by using ANSYS solver in bending condition, emergency braking conditions and rapid turn conditions of stress and deformation conditions. The computational tools and methods we used provide the new type of frame and development with a reference method to refer to in this paper.

Sensitivity Investigation of Specimen Shape on Elastic Behaviour of Perforated Plate

2009 ◽  
Author(s):  
Chang-Hoon Ha ◽  
Tae-Jung Park ◽  
Moo-Yong Kim ◽  
Kwang-Sang Seon ◽  
Jae-Mean Koo ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Perforated Plate ◽  
Type Specimen ◽  
Elastic Behavior ◽  
Elastic Behaviour ◽  
Element Analysis ◽  
Bending Tests ◽  
The Finite Element Analysis ◽  
Specimen Shape

There are various types of tube support plates installed in a steam generator according to the component designer’s preference. Most widely used types of tube support plates are BTSP (broached tube support plate), ATSG (advanced tube support grid), and the eggcrate. In this study, trefoil BTSP specimens made of ASME stainless steel are analyzed and tested. This study is to investigate the effect of specimen shape on an elastic behavior of trefoil BTSP through the compression and bending tests. Prior to the compression and bending tests of BTSP specimens, the equivalent elastic properties of BTSP unit cell are analyzed by the finite element analysis according to the different loading orientation as well as size of the model. Autodesk® Inventor™ software was used to make an analytical model and ANSYS® software was used for the finite element analysis and post-processing. Five and three different shapes of trefoil BTSP specimens are machined and utilized for the compression and bending (4-point and 3-point side bending) tests, respectively. Through the finite element analyses, compression, and bending tests, the equivalent elastic modulus of trefoil BTSP specimen is suggested to be 6,254MPa (907ksi) and the equivalent Poisson’s ratio as 0.64. Specifically the CS5 type specimen which has a ratio of one-fourth (= width/length) was revealed as an appropriate shape of specimen to show those elastic behavior.

Mechanical Analysis of Restored-Tooth Structure Due to Polymerization Shrinkage of Composite Restoration

2011 ◽  
Vol 474-476 ◽  
pp. 1401-1405
Author(s):  
Shui Wen Zhu ◽  
Jian Ping Fan ◽  
Guo Ping Chen
Keyword(s):  
Material Properties ◽  
Development Trend ◽  
Mechanical Analysis ◽  
Elastic Behaviour ◽  
Element Analysis ◽  
Polymerization Shrinkage ◽  
Tooth Structure ◽  
The Finite Element Analysis ◽  
The Development Trend ◽  
Composite Restoration

The finite element analysis is presented in this paper in order to investigate the influence of interphase properties on restored-tooth structure due to polymerization shrinkage of resin-based composite. The restoration-tooth interface is simulated using plane elements of varying material properties and thicknesses. The stress and displacement within restored-tooth structure built-up from the polymerization shrinkage of the restorative composite were computed accounting for the time-dependent, visco-elastic behaviour of the composite. It was found that a correlation exists between material and geometry properties at the restoration-tooth interface and higher shrinkage stresses on interphase due to polymerization shrinkage. The development trend of residual stress from polymerization shrinkage in the restored-tooth structure was discussed and forecasted.

The Thermal Conductivity Simulation Calculation of Polyacryonitrile-Based Carbon Fiber/Pitch-Based Carbon/Carbon Composites

2011 ◽  
Vol 301-303 ◽  
pp. 93-98
Author(s):  
Cui Cai Bai ◽  
Xiu Jun Liu ◽  
Ju Wan ◽  
Hua Liang Liu ◽  
Tong Qi Li ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Finite Element Analysis ◽  
Carbon Fiber ◽  
Geometric Model ◽  
Thermal Capacity ◽  
Carbon Composites ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Simulation Calculation ◽  
Fluent Software

The thermal conductivity of polyacryonitrile-based carbon fiber/pitch-based carbon/carbon composites was simulated by the finite element analysis. After the density, thermal capacity and thermal conductivity of graphite and carbon fiber were given for known parameters, the geometric grid figure) was generated after the Gambit software processed the unit geometric model grids and the thermal conductivities of carbon/carbon composites were simulated by the Fluent software.

Design Process of Low Cost Uncemented Femoral Stem 316L Stainless Steel Using Investment Casting Technique

2016 ◽  
Vol 1133 ◽  
pp. 70-74
Author(s):  
Mohd Yusof Baharuddin ◽  
S. Hussain Salleh ◽  
Alias Mohd Nor ◽  
Muhammad Hisyam Lee ◽  
Ahmad Hafiz Zulkifly ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stainless Steel ◽  
Investment Casting ◽  
316L Stainless Steel ◽  
Femoral Stem ◽  
Von Mises Stress ◽  
Manufacturing Cost ◽  
Element Analysis ◽  
The Finite Element Analysis

Total hip replacement (THR) is a flourishing orthopaedic surgery which generating billion of dollars of revenue. The cost associated with the fabrication of implants has been increasing year by year and this phenomenon has burdened the patient with extra charges. Consequently, this study will focus on designing an accurate implant via implementing the reverse engineering of three dimensional morphological study based on a particular population. By using the finite element analysis, this study will assist to predict the outcome and could become a useful tool for pre-clinical testing of newly designed implant. A prototype is then fabricated using 316L stainless steel by applying investment casting techniques which reduce manufacturing cost without jeopardizing implant quality. The finite element analysis showed the maximum von Mises stress was 66.88 MPa proximally with a safety factor of 2.39 against endosteal fracture, and micromotion was 4.73 μm which promotes osseointegration. This method offers a fabrication process of cementless femoral stems with lower cost, subsequently helping patients, particularly those from non developed countries.

Strength Analysis of Steering Knuckle Arm on Veyron Car

2012 ◽  
Vol 562-564 ◽  
pp. 627-630 ◽  
Author(s):  
Hong Wei Wang ◽  
Lin Lin Yu
Keyword(s):  
Structural Design ◽  
Material Handling ◽  
Maximum Stress ◽  
Geometric Model ◽  
Curve Surface ◽  
Strength Analysis ◽  
Pressure Loading ◽  
Distribution Law ◽  
Element Analysis ◽  
The Finite Element Analysis

The steering knuckle arm is one of the important parts of Veyron automobile. In order to study its stress-strain distribution law under the forward and backward conditions, the geometric model was established under Pro/E, the pressure load which was applied on the inner curve surface was un-uniform in real condition, given triangle pressure loading, its strength under the two conditions was drawn with the finite element analysis, the maximum stress lied the joint part between inner curved surface and the threaded shaft, it was 199.984MPa. The results were in accord to the real conditions. The above research was useful for structural design and material handling.

Improving Linearity of Circular Capacitive Pressure Sensor by Using a Dimple Mask

2020 ◽  
Author(s):  
Md Ebrahim Khalil Bhuiyan ◽  
Mohammad Shavezipur
Keyword(s):  
Ambient Pressure ◽  
Pressure Sensors ◽  
Capacitive Pressure Sensor ◽  
Element Analysis ◽  
Flexible Membrane ◽  
Pressure Sensitive ◽  
The Finite Element Analysis ◽  
Wide Pressure Range ◽  
Capacitance Pressure ◽  
Wide Pressure

Abstract A new design concept for MEMS capacitive pressure sensors is presented that can be used to improve the linearity of the capacitance-pressure (C-T) response of the sensor. The sensor uses an extra dimple mask and etching step in the fabrication process of the device to create small bumps under the pressure sensitive and flexible membrane. Different designs, including a conventional sensor, are modeled and simulated using FEM coupled-field multiphysics solver in ANSYS®. Polycrystalline silicon is used as the structural material in the simulations. Coefficient of linear correlation between device capacitance and ambient pressure is used as the linearity factor to quantitatively compare the performance of different sensors. The finite element analysis show that the linearity factor improves from 0.938 for a conventional design to 0.973 for a design with a central bump. For a design with five bumps (one at the center of membrane and four off-center) the linearity factor increases to 0.997 for bumps of 1.5 μm thickness for wide pressure range of 0.0–4.0 MPa. The proposed design can be tailored for different applications that require certain sensor materials or different pressure ranges by using optimized sensor dimensions.

A two degrees of freedom comb capacitive-type accelerometer with low cross-axis sensitivity

2019 ◽  
Vol 13 (3) ◽  
pp. 5334-5346
Author(s):  
M. N. Nguyen ◽  
L. Q. Nguyen ◽  
H. M. Chu ◽  
H. N. Vu
Keyword(s):  
Degrees Of Freedom ◽  
Proof Mass ◽  
Vibration Modes ◽  
Electrode Structure ◽  
Element Analysis ◽  
Mechanical Coupling ◽  
Fully Differential ◽  
Mode Effects ◽  
The Finite Element Analysis ◽  
Cross Axis

In this paper, we report on a SOI-based comb capacitive-type accelerometer that senses acceleration in two lateral directions. The structure of the accelerometer was designed using a proof mass connected by four folded-beam springs, which are compliant to inertial displacement causing by attached acceleration in the two lateral directions. At the same time, the folded-beam springs enabled to suppress cross-talk causing by mechanical coupling from parasitic vibration modes. The differential capacitor sense structure was employed to eliminate common mode effects. The design of gap between comb fingers was also analyzed to find an optimally sensing comb electrode structure. The design of the accelerometer was carried out using the finite element analysis. The fabrication of the device was based on SOI-micromachining. The characteristics of the accelerometer have been investigated by a fully differential capacitive bridge interface using a sub-fF switched-capacitor integrator circuit. The sensitivities of the accelerometer in the two lateral directions were determined to be 6 and 5.5 fF/g, respectively. The cross-axis sensitivities of the accelerometer were less than 5%, which shows that the accelerometer can be used for measuring precisely acceleration in the two lateral directions. The accelerometer operates linearly in the range of investigated acceleration from 0 to 4g. The proposed accelerometer is expected for low-g applications.

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