scholarly journals Behavior Characteristics of a Booted Sleeper Track System According to Substructure Deformation

2021 ◽  
Vol 11 (10) ◽  
pp. 4507
Author(s):  
Jung-Youl Choi ◽  
Dae-Hui Ahn ◽  
Sun-Hee Kim
Keyword(s):  
Three Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Contact Conditions ◽  
Track System ◽  
System Components ◽  
Shear Cracking ◽  
Behavior Characteristics ◽  
Track Status

In booted sleeper floating track systems wherein the concrete bed, rail, and sleeper are structurally separated, mismatches can occur between the substructure and track owing to deformations. Nevertheless, the mutual behavior between substructures and track systems has not been studied extensively. To address this limitation, the effect of substructure uplift and subsidence on the deformation of a boosted sleeper floating track system installed in a subway box tunnel was analyzed using finite element analysis. A detailed three-dimensional model consisting of all track system components was constructed to determine the interaction between the rail and concrete bed. The sleepers were observed to rotate in response to substructure deformation, and their resulting contact conditions on the concrete bed were analyzed to determine the track status accordingly. The zones of likely tension and shear cracking in the concrete bed were then determined to provide focus areas for track design and maintenance efforts. The results of this study can be used to improve the design and inspection of floating track systems to ensure the safety and functionality of railway tunnels in areas likely to experience uplift or subsidence.

Study on the Complete Equivalent Initial Imperfection of High Formwork Supporting Frame with Pulley-Clip Style

2011 ◽  
Vol 368-373 ◽  
pp. 3052-3056
Author(s):  
Wei Jun Yang ◽  
Yong Da Yang
Keyword(s):  
Finite Element ◽  
Three Dimensional ◽  
Initial Imperfection ◽  
Influential Factors ◽  
Horizontal Load ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Finite Element Software ◽  
Supporting Frame

New full hall scaffolds with pulley-clip style formwork support system is adopted in the concert hall of Changsha. This paper presents the concept of the complete equivalent initial imperfection according to the characteristics of too many influential factors on the high formwork supporting frame，then makes the complete equivalent initial imperfectione equivalent to assumed equivalent horizontal load in order to ensure the safety of the frame. At the same time, it gets a three-dimensional model by the general finite element software ANSYS 10.0. Based on the results of experiment and finite element analysis, it gets the recommended value of assumed equivalent horizontal load. The study on the high formwork supporting frame with pulley-clip style provides some reference for other similar projects.

scholarly journals Development and Verification of Three-Dimensional Model of Femoral Bone: Finite Element Analysis

2019 ◽  
Vol 1372 ◽  
pp. 012014 ◽  
Author(s):  
Aishah Umairah Abd Aziz ◽  
Hong Seng Gan ◽  
Ahmad Kafrawi Nasution ◽  
Mohammed Rafiq Abdul Kadir ◽  
Muhammad Hanif Ramlee
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Femoral Bone ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Element Analysis

Static Analysis and Optimization for Polyarticular Palletizing Robots

2013 ◽  
Vol 431 ◽  
pp. 253-257
Author(s):  
Qing Zhong He ◽  
Pu Quan Wang ◽  
Peng Duan ◽  
Shuai Guo ◽  
Ming Zhang ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Three Dimensional ◽  
Reference Value ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Security Issues ◽  
Optimized Model ◽  
Design Requirements ◽  
Technical People

This paper tries using Inventor software to create the three-dimensional model of the the palletizing robots operation rear arm, and then importing this model to ABAQUS to proceed finite element analysis of statics. We verified these two softwares interface issues, the correctness of the calculation method and the steps by analyzing. From analyzing we found the security issues in the operation rear arm. Then we checked and optimized the model for the issues. From the result, the optimized model meets the strength design requirements. The study has reference value for engineering and technical people.

Structure Design and FE Analysis of a Newly Basketball Wheelchair

2008 ◽  
Vol 44-46 ◽  
pp. 685-690
Author(s):  
Lei Lei ◽  
Tian Min Guan ◽  
Li Jun Shan
Keyword(s):  
Three Dimensional ◽  
Work Conditions ◽  
Structure Design ◽  
Human Engineering ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Engineering Theory ◽  
Development Level ◽  
The Finite Element Analysis

Based on the human engineering theory the structure of the new Basketball wheelchair is designed. And the three dimensional model is drawn by means of the PRO/E software after the design. Next, the finite element analysis computation on the wheelchair structure is completed under the four work conditions by I-DEAS software. The result shows that its intensity satisfies the operation requirements and proves that the new Basketball wheelchair is comfortable, safe and reliable. The research of this paper has a more vital significance for enhancing the performance of basketball wheelchair and the development level of sport wheelchair.

Optimization Design of Hydraulic Cylinder Based on ANSYS

2012 ◽  
Vol 562-564 ◽  
pp. 709-712
Author(s):  
Yi Lun Han ◽  
Li Jun Huang ◽  
Xue Lei Wen
Keyword(s):  
Optimization Design ◽  
Three Dimensional ◽  
Basic Structure ◽  
Hydraulic Cylinder ◽  
Stress And Strain ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
The Cost

The basic structure of the piston hydraulic cylinder was introduced. A three-dimensional model was carried out for the hydraulic cylinder by using Pro/E soft，the finite element analysis to the largest hydraulic condition while hydraulic cylinder working by using ANSYS soft，and the distribution of the stress and strain of hydraulic cylinder was derived from it. It optimized the structure of hydraulic cylinder effectively and the cost was saved.

Torsional Strength Analysis of Output Shaft in Portal Axle Using Finite Element Analysis

2013 ◽  
Vol 284-287 ◽  
pp. 996-1000 ◽  
Author(s):  
Jong Boon Ooi ◽  
Xin Wang ◽  
Ying Pio Lim ◽  
Ching Seong Tan ◽  
Jee Hou Ho ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Experimental Results ◽  
Strength Analysis ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Torsional Strength ◽  
Overall Performance

Portal axle unit is a gearbox unit installed on every end axles of the vehicle. It is installed to the vehicle to give higher ground clearance to enable vehicle to go over large obstacle when driving in off-road conditions. Shafts must be exceptionally tough and lightweight to improve the overall performance of the portal axle unit. In this paper, the shaft is analyzed in three-dimensional model and the stress of the shaft model is analyzed using finite element analysis (FEA). The FEA result is compared with experimental results.

Three Dimensional Model Construction and Strength Finite Element Analysis of Cold Shearing Machine Crankshaft

2015 ◽  
Vol 713-715 ◽  
pp. 95-98
Author(s):  
Ai Hua Li ◽  
Hong Yu Liu
Keyword(s):  
Finite Element ◽  
Working Conditions ◽  
Three Dimensional ◽  
Metallurgical Industry ◽  
Maximum Load ◽  
Von Mises Stress ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Reference Base

Cold shearing machine is the machine equipment often used in metallurgical industry to shear head, tail and fixed length of rolled piece. The shearing movement of cold shearing machine can be realized by crankshaft driving link rod with relative up-and-down motion. Load on crankshaft is comparatively big. In this paper, cold shearing machine crankshaft was taken as an example. The three dimensional model of relative cold shearing machine crankshaft was constructed by SolidWorks software. Strength finite element analyses on relative model were made by static analysis module attached to SolidWorks software under maximum load working conditions. The overall displacement distribution pictures and overall Von Mises stress distribution pictures of cold shearing machine crankshaft under relative load working conditions were obtained. This research provides important reference base for the design and reform of cold shearing machine crankshaft.

scholarly journals Biomechanical grounding of the transalveolar osteosynthesis of еdentulous мandible fractures

2021 ◽  
Vol 26 (1) ◽  
pp. 209-217
Author(s):  
N.H. Idashkina ◽  
O.O. Hudarian ◽  
D.V. Chernov ◽  
I.A. Samoilenko
Keyword(s):  
Simulation Modeling ◽  
Three Dimensional ◽  
Calculation Model ◽  
Mandibular Fractures ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Design Load ◽  
Load Combination ◽  
3D Computer Simulation

The purpose of the work is improvement of the effectiveness of the mandibular fractures treatment in patients with partial or complete adentia by developing and experimentally testing transalveolar osteosynthesis technique. An experimental study was carried out by 3D computer simulation modeling by the final element analysis to assess the efficiency of mandibular fractures fixation at partial or complete adentia using the Ш-shaped plate, which we developed for the transalveolar osteosynthesis method. Calculations of the immobilized fractures for static (own weight) and dynamic (functional) loads were performed according to the author's method, taking into account pronounced resorptive processes in the bone from the beginning of the reparative reaction to assess the rigidity of fragments fixation during the entire period of the fractures healing. Under the conditions of the same three-dimensional model of the mandible, calculations were performed when the fracture was fixed with ordinary linear titanium osseous plates. It is proved that at functional load the new plate provides a compression effect in the fractures region, as evidenced by the negative displacements in the final elements of the mental region according to the results of design load combination 2- 3. The maximum efforts in the screws of the calculation model with a conventional bone plate were 136.955 N, which is almost ten times more than on the model with a Ш-shaped titanium retainer (12.656 N).

scholarly journals Development of a 3D WebGIS Application for the Visualization of Seismic Risk on Infrastructural Work

2021 ◽  
Author(s):  
Mauro Mazzei ◽  
Davide Quaroni
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Seismic Risk ◽  
Three Dimensional ◽  
Seismic Action ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Technical Standards ◽  
Element Analysis ◽  
Italian Territory

In this paper we describe the potentialities of a tool for the visualization of experimental results directly on a three-dimensional model. The case study concerns the visualization of the results of a dynamic finite element analysis (FEA/FEM) applied to the calculation of seismic risk on works belonging to the Italian infrastructural heritage, specifically bridges, viaducts and overpasses. The project is based on finite element analysis performed on an exemplary set of 8 structures located on the Italian territory, performed by means of the open-source software framework OpenSees, according to the guidelines indicated in the Technical Standards for Construction NTC08. The application created for this project is classifiable as a webGIS, since all data are georeferenced and visualized on a map through an application executed through a browser. The graphical interface displays the interested works on the map of the Italian territory and allows to select them by mouse click. Following the selection, a 3D rendering of the model of the work and the surrounding terrain is shown, in which the results of the analysis are represented using color gradients directly on the three-dimensional model. The necessary tools are present for the selection of the type of result and for the animation in real time of the response of the work to the seismic action. The 3D representation is freely navigable by the user thanks to intuitive tools of panning, rotation and zoom through mouse and keyboard. The application takes advantage of HTML5, CSS and Javascript to show graphical features such as Cartesian diagrams of accelerograms used in modal analysis.

scholarly journals A Finite Element Analysis to Compare Stress Distribution on Extra-Short Implants with Two Different Internal Connections

2019 ◽  
Vol 8 (8) ◽  
pp. 1103 ◽  
Author(s):  
García-Braz ◽  
Prados-Privado ◽  
Zanatta ◽  
Calvo-Guirado ◽  
Prados-Frutos ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Axial Load ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Stress Concentrations ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Short Implants

Background: The goal of this study was to analyze the stress distribution on two types of extra-short dental implants with 5 mm of length: An internal hexagon (IH) and morse taper connection (MT). Methods: The three-dimensional model was composed of trabecular and cortical bone, a crown, an extra-short dental implant and their components. An axial load of 150 N was applied and another inclined 30° with the same magnitude. Results: Stress concentrations on the IH implant are observed in the region of the first threads for the screw. However, in the MT implant the highest stress occurs at the edges of the upper implant platform. Conclusions: In view of the results obtained in this study the two types of prosthetic fittings present a good stress distribution. The Morse taper connections presented better behavior than the internal in both loading configurations.

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