scholarly journals Development of a Semiautomatic Parametric Method for Creation of an I-BIM Model of a Tunnel for Use in FEM Software

2021 ◽  
Vol 2021 ◽  
pp. 1-18
Author(s):  
Robert Klinc ◽  
Dani Gabršček ◽  
Jure Česnik ◽  
Marko Žibert ◽  
Martin Hostnik ◽  
...  
Keyword(s):  
Computational Model ◽  
Parametric Method ◽  
Fem Analysis ◽  
Practical Case ◽  
Element Analysis ◽  
Building Information Model ◽  
Manual Task ◽  
Tunnel Model ◽  
The Finite Element Analysis ◽  
Building Information

This paper focuses on the design phase of I-BIM tunnelling projects using Sequential Excavation Method (SEM), in Europe, commonly referred to as the New Austrian Tunnelling Method (NATM), and addresses the problem of coupling geotechnical conditions and tunnelling Building Information Model (BIM) for the preparation of the computational model suitable for the finite element analysis method (FEM). The review of the literature led to the conclusion that an automatic merging of the tunnel model and ground model for use in the FEM software is currently not reliable due to the number of differences between various types of models as they serve contrasting needs. Consequently, modelling becomes a manual task, which is very time-consuming and error prone. In this paper, we present the development of a framework for the semiautomatic transformation of the various tunnelling models and respective ground models into the model suitable for further analysis. We conclude that the import and translation of the geometry into the FEM software are most successful and accurate when the initial I- BIM (tunnel) model is prepared at a level of detail appropriate for a computational model. The result is the I-BIM model, fit for use in the FEM software which speeds up the modelling process and reduces errors. We have shown that it is possible to prepare the geometry of a tunnel in the BIM software, transfer it, and use it in the software for geotechnical analysis. This makes the preparation of the tunnel geometry for FEM analysis much easier and faster. Due to the fast preparation of the geometry of the new model, the approach presented in this research is useful in practice. The applicability of the framework and the framework workflow are both presented through a practical case study.

Design and FEM Analysis of a Large Turning Table

2014 ◽  
Vol 494-495 ◽  
pp. 606-610
Author(s):  
Wei Shun Wang ◽  
Qing Zhang ◽  
Hong Liang Ma ◽  
Cheng Dong Hong ◽  
Jin Liang Wang ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Carrying Capacity ◽  
Fem Analysis ◽  
Good Effect ◽  
Modal Shape ◽  
Element Analysis ◽  
Double Ring ◽  
The Finite Element Analysis ◽  
Three Body ◽  
The Cost

Introducing the design of a large turning table. The table structure is combined with three-body, double-ring hydrostatic guide-way consists of inner and outer rings, it has the advanced features of high carrying capacity, high rigidity, high precision and good holding of the second fitting precision. Table rigidity and former six-stage modal shape are resulted by the finite element analysis, the result proves the rationality of the design. The design has been applied to the 25m vertical lathe successfully and obtained a good effect. The design solved lots of questions such as casting and machining and transport of a large table, it has reduced the cost greatly.

FEM Analysis on Creep Deformation and Axial Bolt Force Change in Threaded Fasteners at Elevated Temperature

2016 ◽  
Author(s):  
Yuya Omiya ◽  
Tadatoshi Watanabe ◽  
Masahiro Fujii ◽  
Haruka Yamamoto
Keyword(s):  
Finite Element Method ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Elevated Temperature ◽  
Creep Deformation ◽  
Fem Analysis ◽  
Screw Thread ◽  
Element Analysis ◽  
Threaded Fasteners ◽  
The Finite Element Analysis

In this study, the creep deformation in the threaded joint are discussed using a finite element method, and evaluated the influence of the dimensions of bolt and clamped parts. The stress and creep strain distributions are calculated using the Finite Element Analysis. The occurrence and the propagation of the creep deformation and influence of the creep deformation on the axial bolt force were discussed. It was found that the creep deformation occurred at the bearing surfaces and the engagement screw thread mainly at the elevated temperature. The creep deformation was a cause of the reduction in axial bolt force.

Building Information Model–based finite element analysis of high-rise building community subjected to extreme earthquakes

2018 ◽  
Vol 22 (4) ◽  
pp. 971-981 ◽  
Author(s):  
Xiaodan Ren ◽  
Weida Fan ◽  
Jie Li ◽  
Jun Chen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Information Model ◽  
Plasticity Model ◽  
Building Structures ◽  
Element Analysis ◽  
Building Information Model ◽  
High Rise ◽  
Building Information ◽  
Building Community

Starting from the Building Information Model, a pre-processing procedure is proposed in this work to develop the refined finite element model of buildings and building community. The structural members which are represented by three-dimensional solid entities in Building Information Model are converted to lines and planes according to their geometric characteristics. To meet the requirements of finite element analysis of building structures, the lines are discretized by the beam elements and the surfaces are discretized by the shell elements. The damage plasticity model is implemented to simulate the damage and failure of concrete, and the classic plasticity model is chosen for steel. The simulations of high-rise building and building community are performed with the help of large computing server. The damage patterns of different building structures are obtained and discussed. This study lays a solid foundation for the further fusion between Building Information Model and finite element analysis.

scholarly journals FEM Analysis of Robotized Arc Welded Joint

2020 ◽  
Vol 184 ◽  
pp. 01032
Author(s):  
Anas Islam ◽  
Vijay Dwivedi ◽  
Kamal Sharma
Keyword(s):  
Elastic Strain ◽  
Welded Joint ◽  
Welding Process ◽  
Welding Current ◽  
Fem Analysis ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Almost All ◽  
Welding Processes ◽  
Two Bodies

Welding is one of the most important phenomenon as far as the joining of two bodies are concerned. Welding processes are common in fabrication industries. Different types of welding are used in the automobile industries for the manufacturing of their bodies. Other examples of industries where welding plays a crucial role include construction industries, aviation industries, fabrication of pipelines, general repairing of machines, etc. As welding is such a most important factor in almost all industries, therefore it deserves proper attention in order to optimize the whole welding process. On one hand welding process is quite beneficial but on the other hand, it requires very careful attention of the operator, as there were several cases of accident due to welding just because of the carelessness of the operator. Also, it is a repetitive task so the labor or worker is engaged in working without proper use of their brains and in some other productive works. Thus, a number of manpower is only engaged for welding operation this makes the work boring and this restricts them from showing their true potential. This paper deals with the finite element analysis (FEA) of welded single V joint for obtaining the Shear Elastic Strain, Normal Elastic strain, Strain energy, and Shear stress respectively developed at the welded joint. The temperature of the weld pool taken for analysis is 400°C and the material of the specimen is Mild steel ASTM A 36 for welding and its coordinating filler material AWS A5.1 E 6013 were chosen in this study. The specimen size was 30×150×9mm3 thickness. Welding current was set to 90A with welding speed27mm/sec.

Virtual Modeling, Detail Design and FEM Analysis for a Testing Device

2016 ◽  
Vol 823 ◽  
pp. 3-6 ◽  
Author(s):  
Cornel Cătălin Gavrilă ◽  
Radu Velicu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fem Analysis ◽  
Testing Device ◽  
Ansys Software ◽  
Element Analysis ◽  
Detailed Design ◽  
Detail Design ◽  
The Finite Element Analysis ◽  
Virtual Modeling

The paper presents aspects regarding the virtual modeling, detailed design and FEM analysis of a testing device, to be used to fix small pieces in tribological tests. First there are presented some aspects of the device virtual modeling and drafting, using CATIA software. Then are defined the geometrical and kinematical restrictions between the parts. Finally, there are presented some aspects about the Finite Element Analysis and the results of this, using ANSYS software. In the final part of the paper, there are presented the conclusions of the simulation.

scholarly journals Modelling on Reinforced Concrete Exterior Joint with Simplified Detailing Technique by Using Coupler Bar

2019 ◽  
Vol 8 (9) ◽  
pp. 1618-1626
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Structural Response ◽  
Fem Analysis ◽  
Experimental Results ◽  
Element Analysis ◽  
Joint Specimen ◽  
Numerical Studies ◽  
The Finite Element Analysis ◽  
Column Joint

The present study focus on structural response of the Reinforced Concrete (RC) beam-column joint through numerical studies. For this study, totally two groups of reinforcement details are considered and named as “EJ-SFC” and “EJ-IS456”. The proposed coupler joint specimen (EJ-SFC) is compared with the standard detailed specimen that is design and detailed by IS 456-2000. To simulate each group of the specimen, a full 3D Finite Element Modelling (FEM) analysis has been carried out by using ANSYS 14.5 software. All groups of joints were tested under reverse cyclic loading. The outcome of the Finite Element Analysis (FEA) findings were presented in terms of load - deflection plot and compared with previous experimental results. The FEA and experimental results showed that the performance of the proposed coupler joint specimen was superior in ductile behaviour than that of EJ-IS456 specimen.

FEM Analysis of Scrolls with Single Profile and Hybrid Profile

2012 ◽  
Vol 452-453 ◽  
pp. 269-273 ◽  
Author(s):  
Zai Xin Wu ◽  
Tao Liu ◽  
Hui Wei Sun ◽  
Chi Bing Hu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Fem Analysis ◽  
Analysis Data ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Temperature Load ◽  
Combined Action ◽  
Stress And Deformation ◽  
Analysis Models

A new method to design hybrid scroll profile is introduced. The finite element analysis models for hybrid profile and single profile scrolls are established respectively. The stress and deformation of these two kinds of scrolls are analyzed by finite element method under the combined action of temperature load and gas load in the process of one revolution of crank shaft. The analysis data show that the stress and deformation of hybrid-profile scroll are similar to that of involute-profile scroll. Furthermore, the length of baseline of hybrid profile reduces approximately 27.32% with respect to that of involute profile. The results of this study are helpful in the design of scroll compressor with hybrid scroll profile.

The Finite Element Analysis of Fatigue Performance of Precracked Concrete Beams Strengthened with Prestressed CFRP

2011 ◽  
Vol 250-253 ◽  
pp. 3320-3327
Author(s):  
Qing Song Li ◽  
Shao Ping Meng
Keyword(s):  
Finite Element ◽  
Static Loading ◽  
Concrete Beams ◽  
Fem Analysis ◽  
Fatigue Performance ◽  
Fatigue Properties ◽  
Analysis Model ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Before And After

The research conducts the numerical analysis of the fatigue performance of precracked concrete beams strengthened with prestressed CFRP, establishing the static analysis model (SM) and fatigue analysis model (FM) respectively, examining the change of the static loading and fatigue performance before and after CFRP strengthens precracked concrete beams in the different prestressed situations, and analyzing the relevant fatigue performance parameters through comparing FEM analysis with experimental results. The research results demonstrate that the method of strengthening concrete beams with prestressed CFRP can improve the static loading and fatigue performance; the increased rate of fatigue performance of precracked concrete beams is parallel to the CFRP prestress; the fatigue life of precracked concrete beams increases with the raising of the CFRP prestress; FEM analysis is in close agreement with experiment results; the fatigue properties of precracked concrete beams strengthened with prestressed CFRP can be analyzed effectively by the finite element method.

The Design and FEM Analysis of End-Face Tooth of Coupling Flange

2011 ◽  
Vol 86 ◽  
pp. 268-272
Author(s):  
Quan Xian Wang ◽  
Wei Tang ◽  
Ning Jun Ye
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Design Method ◽  
Fem Analysis ◽  
Element Analysis ◽  
Series Design ◽  
General Series ◽  
The Finite Element Analysis ◽  
Geometrical Dimensions

Proposed a design method of the geometrical dimensions of cone-shape end-face teeth of coupling flange, established an intensity check equation for end-face teeth, and inspected by the finite-element analysis. This method can be used for the general series design of end-face teeth of coupling flange between φ500~φ1200, it also can be used as a reference for design of some small specifications.

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