Simulation Analysis of K Node on UHV Transmission Tubular Tower

2014 ◽  
Vol 488-489 ◽  
pp. 676-680
Author(s):  
Yuan Gao ◽  
Mao Hua Li
Keyword(s):  
Finite Element ◽  
Stress Concentration ◽  
Stress Distribution ◽  
Maximum Stress ◽  
Simulation Analysis ◽  
Safety Margin ◽  
Finite Element Calculation ◽  
Element Calculation ◽  
Transmission Tower ◽  
Reduce Stress Concentration

Layout for K node of steel tubular UHV transmission tower is analyzed in systematic and all-sided with finite element calculation in this paper. The recommendation is that as no applicable formula is available at present, existing specification can still be used for calculation but with a safety margin of more than 10%. K node connected in intersecting welding manner with appropriate stiffening rib will improve the stress, gender more uniformed stress distribution, and effectively reduce stress concentration. Welding connection features smaller displacement and maximum stress and more uniformed stress distribution relative to plug-in connection, therefore it is recommended to be used for K node with slope.

scholarly journals Force Transfer and Stress Distribution in an Implant-Supported Overdenture Retained with a Hader Bar Attachment: A Finite Element Analysis

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Preeti Satheesh Kumar ◽  
Kumar K. S. Satheesh ◽  
Jins John ◽  
Geetha Patil ◽  
Ruchi Patel
Keyword(s):  
Finite Element ◽  
Stress Concentration ◽  
Stress Distribution ◽  
Maximum Stress ◽  
Alveolar Bone ◽  
Von Mises Stress ◽  
Element Analysis ◽  
Finite Element Software ◽  
Force Transfer ◽  
Edentulous Mandible

Background and Objectives. A key factor for the long-term function of a dental implant is the manner in which stresses are transferred to the surrounding bone. The effect of adding a stiffener to the tissue side of the Hader bar helps to reduce the transmission of the stresses to the alveolar bone. But the ideal thickness of the stiffener to be attached to the bar is a subject of much debate. This study aims to analyze the force transfer and stress distribution of an implant-supported overdenture with a Hader bar attachment. The stiffener of the bar attachments was varied and the stress distribution to the bone around the implant was studied. Methods. A CT scan of edentulous mandible was used and three models with 1, 2, and 3 mm thick stiffeners were created and subjected to loads of emulating the masticatory forces. These different models were analyzed by the Finite Element Software (Ansys, Version 8.0) using von Mises stress analysis. Results. The results showed that the maximum stress concentration was seen in the neck of the implant for models A and B. In model C the maximum stress concentration was in the bar attachment making it the model with the best stress distribution, as far as implant failures are concerned. Conclusion. The implant with Hader bar attachment with a 3 mm stiffener is the best in terms of stress distribution, where the stress is concentrated at the bar and stiffener regions.

Stress and Strength Analysis of Equal-Diameter Tees

1991 ◽  
Vol 113 (1) ◽  
pp. 55-63 ◽  
Author(s):  
J. Zhixiang ◽  
Z. Qingjiang ◽  
Z. Siding
Keyword(s):  
Finite Element ◽  
Stress Concentration ◽  
Stress Distribution ◽  
Maximum Stress ◽  
Elastic Stress ◽  
Stress Factors ◽  
Strength Analysis ◽  
Stress Distributions ◽  
Concentration Factors ◽  
Stress Concentration Factors

The elastic stress distribution of four models (β=Do/Di=1.07, 1.20, unreinforced and weld-reinforced) under five typical external loadings and the strength of six models (in addition to β=1.50) under internal pressure are investigated experimentally. The maximum stress factors are obtained. The influences of weld-reinforced structure on stress distribution and strength characteristics of tees are discussed. The finite-element predictions of unreinforced tees with β=1.07, 1.11, 1.15, 1.20 are carried out. The predicted stress distributions agree well with measured results. The relation between β and stress concentration factors under various loadings are obtained.

Finite Element Static Analysis of Twin Tripod Sliding Universal Joint Used in Small Rolling Mill

2012 ◽  
Vol 510 ◽  
pp. 512-515
Author(s):  
De Gong Chang ◽  
Mei Bo Feng ◽  
Zhao Dong Liu
Keyword(s):  
Heat Treatment ◽  
Finite Element ◽  
Stress Concentration ◽  
Stress Distribution ◽  
Rolling Mill ◽  
Theoretical Basis ◽  
Maximum Stress ◽  
Universal Joint ◽  
Maximum Deformation ◽  
Ansys Workbench

In this paper,the model of the trident chamfer, which is the twin tripod sliding universal joint used in small rolling mill, is created by the software Solidworks, and the statics has been analyzed by using the software ANSYS Workbench. The stress contours diagrams and the deformation contours diagrams of the trident chamfer are obtained,so as to arrive its stress distribution and deformation. So the maximum stress concentration parts of the trident chamfer are known by being analyzed. Similarly, The maximum deformation concentration parts are obtained. All above of this provides the theoretical basis for the further study of twin tripod sliding universal joint, especially in the improvement of the structure as well as the heat treatment of the material.

Simulation Analysis of Meiliao Trench-Buried Inverted Siphon

2013 ◽  
Vol 394 ◽  
pp. 340-344
Author(s):  
Ke Ding Liu
Keyword(s):  
Finite Element ◽  
Simulation Analysis ◽  
Finite Element Calculation ◽  
Construction Process ◽  
Element Calculation ◽  
Force Analysis ◽  
Operational Process ◽  
Inverted Siphon ◽  
Calculation Results ◽  
Calculation Software

This paper adopts universal finite element calculation software to carry out force analysis for Meiliao trench-buried inverted siphon,computer is applied in analysis of trench-buried inverted siphon. Deducing variation law of the inverted siphons stress and displacement in construction process and operational process. The calculation results further shown design schemes rationality and safety. Analysis results show that, force of Meiliao trench-buried inverted siphon structure is explicit, it meets the requirements for design.

Comparison of FEA Results and TEMA Code in Tubular Heat Exchanger Design

2005 ◽  
Author(s):  
Weiya Jin ◽  
Zengliang Gao ◽  
Weiming Sun ◽  
Kangda Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Heat Exchanger ◽  
Stress Distribution ◽  
Maximum Stress ◽  
Safety Margin ◽  
Petrochemical Plant ◽  
Fe Method ◽  
Tubular Heat Exchanger ◽  
Heat Exchanger Design

Finite element method is applied to calculate the stress distribution and the maximum stress location of the tubesheets, tubes and other parts of a tubular heat exchanger in a petrochemical plant. Comparison between FE results and TEMA results is discussed. The temperature and stress distribution of tubesheets and other important parts can be accurately calculated by FE method, also the safety margin of the parts in the heat exchanger can be clearly given by FE method. For multi-pass heat exchanger, FE method is more useful. By analyzing FE results, it is easily to know whether the stresses in exchangers are over the allowable value. Therefore, FE method is a good measure to aid heat exchanger design when standard of TEMA is used.

Application of Finite Element Method in Structure Analysis for Inclined Clay-Core Wall Earth Dam

2012 ◽  
Vol 499 ◽  
pp. 331-334
Author(s):  
Jian Hua Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Structure Analysis ◽  
Simulation Analysis ◽  
Finite Element Calculation ◽  
Earth Dam ◽  
Construction Process ◽  
Element Calculation ◽  
Clay Core ◽  
Calculation Software

This paper adopts universal finite element calculation software to carry out simulation analysis for inclined clay-core wall earth dam of Hongxing reservoir, computer is applied in design and analysis of inclined clay-core wall earth dam. Variation law of inclined clay-core wall earth dam’s stress and displacement in construction process and operational process is researched. The research results are shown: inclined clay-core wall earth dam of Hongxing reservoir is economic and reasonable, structure is safe and reliable, and every index meets the requirements for design.

Study on the Stress Distribution of the Piston Rod Fillet Based on the Nonlinear Finite Element Method

2014 ◽  
Vol 1070-1072 ◽  
pp. 1848-1851
Author(s):  
Xiao Yu Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Concentration ◽  
Stress Distribution ◽  
Cross Section ◽  
Maximum Stress ◽  
Nonlinear Finite Element ◽  
Nonlinear Finite Element Method ◽  
Fillet Radius ◽  
Element Method

Because of discontinuity of the shape, the piston rod of rapping device is liable to occur stress concentration phenomenon, leading to fracture of the piston rod. At work, the maximum stress of piston rod which took place in the cross section of the geometric mutations varied with the change of the fillet radius, under the same load, it analyzed the influence of different fillet radius on fracture of the piston rod via ANSYS/LS-DYNA finite element. The results showed that it can meet the requirements when the fillet radius was 5 mm.

scholarly journals Finite Element Analysis of Stress in Bone and Abutment-Implant Interface under Static and Cyclic Loadings

2020 ◽  
Author(s):  
Saeed Nokar ◽  
Hamid Jalali ◽  
Farideh Nozari ◽  
Mahnaz Arshad
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Concentration ◽  
Stress Distribution ◽  
Maximum Stress ◽  
Von Mises Stress ◽  
Element Analysis ◽  
Bone Implant ◽  
Factors Affecting ◽  
Von Mises

Objectives: The success of implant treatment depends on many factors affecting the bone-implant, implant-abutment, and abutment-prosthesis interfaces. Stress distribution in bone plays a major role in success/failure of dental implants. This study aimed to assess the pattern of stress distribution in bone and abutment-implant interface under static and cyclic loadings using finite element analysis (FEA). Materials and Methods: In this study, ITI implants (4.1×12 mm) placed at the second premolar site with Synocta abutments and metal-ceramic crowns were simulated using SolidWorks 2007 and ABAQUS software. The bone-implant contact was assumed to be 100%. The abutments were tightened with 35 Ncm preload torque according to the manufacturer’s instructions. Static and cyclic loads were applied in axial (116 Ncm), lingual (18 Ncm), and mesiodistal (24 Ncm) directions. The maximum von Mises stress and strain values ​​were recorded. Results: The maximum stress concentration was at the abutment neck during both static and cyclic loadings. Also, maximum stress concentration was observed in the cortical bone. The loading stress was higher in cyclic than static loading. Conclusion: Within the limitations of this study, it can be concluded that the level of stress in single-unit implant restorations is within the tolerable range by bone.

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