Analytical Study of Appropriate Design for High-Grade Induction Bend Pipes Subjected to Large Ground Deformation

2004 ◽  
Vol 126 (4) ◽  
pp. 376-383 ◽  
Author(s):  
Hiroshi Yatabe ◽  
Naoki Fukuda ◽  
Tomoki Masuda ◽  
Masao Toyoda
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Analytical Study ◽  
Ground Deformation ◽  
Bending Moment ◽  
Finite Element Models ◽  
High Grade ◽  
Buried Pipeline ◽  
Parametric Studies

In order to clarify the significant parameters to control the deformability of high-grade induction bend pipes, finite element analyses simulating the deformation behavior subjected to an internal pressure and bending moment were carried out. Parametric studies were conducted using the finite element models with various mechanical properties and geometric imperfections. The change in the integrity of the buried pipeline due to the quality of the induction bend pipe was then quantitatively examined. Consequently, this study indicated that the mechanical properties, the dimensions and tolerance and the properties of the “transition” part should be appropriately designed in proportion to the ground deformation.

Analytical Study of Appropriate Design for the High-Grade Induction Bend Pipes Subjected to Large Ground Deformation

2002 ◽  
Author(s):  
Hiroshi Yatabe ◽  
Naoki Fukuda ◽  
Tomoki Masuda ◽  
Masao Toyoda
Keyword(s):  
Mechanical Properties ◽  
Analytical Study ◽  
Ground Deformation ◽  
Bending Moment ◽  
High Grade ◽  
Finite Element Analyses ◽  
Buried Pipeline ◽  
Line Pipe ◽  
Opening Mode

In this study, the deformability of induction bends made out of high-grade line pipe is analytically discussed. In order to clarify the significant parameters for the deformability, 30 cases of finite element analyses simulating the deformation behavior subjected to internal pressure and bending moment were carried out. The effects of the mechanical properties, the geometry of the “bend” part and the properties of the “transition” part on the deformability were investigated. Finally, the change in the integrity of the buried pipeline due to the quality of the induction bend was quantitatively examined. The results showed that the effects of the mechanical properties and geometry of the “bend” part on the deformability were small in the closing mode. On the other hand, the deformability was sensitive to such parameters in the opening mode. Especially, the properties of the “transition” part were significant. Consequently this study indicated that the mechanical properties, the dimensions and tolerance and the properties of the “transition” part should be appropriately designed in proportion to the amount of assumed ground deformation.

Adjust the Thermo-Mechanical Properties of Finite Element Models Welded Joints Based on Soft Computing Techniques

2017 ◽  
pp. 699-709
Author(s):  
Roberto Fernández Martinez ◽  
Rubén Lostado Lorza ◽  
Marina Corral Bobadilla ◽  
Rubén Escribano Garcia ◽  
Fátima Somovilla Gomez ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Soft Computing ◽  
Welded Joints ◽  
Finite Element Models ◽  
Soft Computing Techniques

Investigation of Pore Structures on Mechanical Properties of Porous Ti by 3D Finite Element Models

2013 ◽  
Vol 647 ◽  
pp. 683-687
Author(s):  
Mi Gong ◽  
Hong Chao Kou ◽  
Yu Song Yang ◽  
Guang Sheng Xu ◽  
Jin Shan Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Elastic Modulus ◽  
Yield Strength ◽  
Finite Element Models ◽  
3D Finite Element ◽  
Pore Model ◽  
Porous Ti ◽  
Pore Structures ◽  
Medium Porosity

The pore structures on mechanical properties of porous Ti were investigated by 3D finite element models. Calculated elastic modulus and yield strength suggested that square-pore models exhibit lower modulus and higher strength compared with another two kinds of shapes (circle and hexagonal). In addition, under the condition of medium porosity (58.96%), integrated property was found in square-pore model which elastic modulus was 26.97GPa, less than 1/3 of hexagonal-pore model; while the yield strength maintained 63.82MPa, doubled the figure of circle-pore model. Thus, models with square-pore structures show potential perspective as hard tissue replacements. Investigation on anisotropy of microstructure implies that the elastic modulus was affected more intensively than the yield strength.

The Influences of the Stem Structure and Elastic Modulus on Wheat lodging

2012 ◽  
Vol 524-527 ◽  
pp. 2330-2333 ◽  
Author(s):  
Zhi Hua Yuan ◽  
Xiu Li Zhang ◽  
Gui Zhuan Xu ◽  
Xiang Xiong Zhao
Keyword(s):  
Mechanical Properties ◽  
Finite Element Method ◽  
Finite Element ◽  
Elastic Modulus ◽  
Theoretical Model ◽  
Wall Thickness ◽  
Wheat Production ◽  
Experimental Improvement ◽  
Stem Structure

Wheat lodging results in great losses of wheat production about 10%~30% every year. It is very important to study the lodging and to find new way to improve the quality of wheat stalks and its anti-lodging characteristics. The study about the changing of wheat stem mechanical properties with the elastic modulus and stem structure is carried on the basement of theoretical model, experimental improvement, and finite element method. Results show that the stem is more difficult to lodge if the ratio is bigger, which can be calculated through elastic modulus multiplying wall thickness and divided by diameter.

scholarly journals Design of a Fabric Winding Up Unit

2020 ◽  
Vol 13 (1) ◽  
pp. 126-132
Author(s):  
László Márton ◽  
Ferenc Szigeti ◽  
Gergely Dezső
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Production Capacity ◽  
Automated Systems ◽  
Air Spring ◽  
Element Analysis ◽  
Structural Solutions

AbstractFor air-spring production the fabric winding is what prepares the semi-finished materials. The rubber body, that we called the membrane is made from using several layers of fabric and rubber. Building together these layers defines the mechanical properties. During the winding up, we prepare the cut rubber or fabric layers in rolls. Quality of rolling and the performance to make the semi-finished material, depend on the machine which is used for the winding. To satisfy the higher production capacity it was necessary to create a modern construction using automated systems. To assure the ergonomic expectations was a main viewpoint too. My thesis main goal is to explain, in detail, my design and to prove the device structural solutions using finite element analysis.

scholarly journals Experimental Test of Circular Hollow Sections Solid Flanged Splice

2020 ◽  
Vol 8 (6) ◽  
pp. 3847-3851
Keyword(s):  
Finite Element ◽  
Bending Moment ◽  
Finite Element Models ◽  
Moment Capacity ◽  
Flexural Members ◽  
End Plate ◽  
Modes Of Failure ◽  
Aesthetic Appearance ◽  
Bolt Failure ◽  
Ultimate Moment

The use of circular hollow sections (CHS) have increased due to its aesthetic appearance and good mechanical properties. This research investigates the behavior of the bolted CHS splices with circular end plates under pure bending moment that allows the use of CHS as long flexural members. Three connections are tested and the corresponding finite element models are constructed. The finite element models are verified with the experimental results and showed acceptable agreement in terms of both ultimate moment capacity and load-displacement curves. Three modes of failure are observed where the first is pure bolt failure, the second is pure end plate yielding while the third is a combination of the two modes where end plate plastifies accompanied by bolt failure. Stiffness is also observed and is found to be greatly affected by the thickness of the end plate

Effect of Material Stress-Strain Behavior and Pipe Geometry on the Deformability of High-Grade Pipelines

2004 ◽  
Vol 126 (1) ◽  
pp. 113-119 ◽  
Author(s):  
Hiroshi Yatabe ◽  
Naoki Fukuda ◽  
Tomoki Masuda ◽  
Masao Toyoda
Keyword(s):  
Finite Element ◽  
High Grade ◽  
Finite Element Analyses ◽  
Analysis Method ◽  
Element Analysis ◽  
Line Pipe ◽  
Strain Behavior ◽  
Parametric Studies ◽  
Pipe Geometry ◽  
Strain Hardening Behavior

In this study, the deformability of high-grade pipelines subjected to an axial compressive deformation was experimentally and analytically discussed. Six cases of axial compression experiments with high-grade line pipe were carried out. The pipe specimens had various material properties and wall thickness. Finite-element analyses were also carried out and verified the reliability. Then, a finite-element analysis method for evaluating the deformability of the line pipe was established. By using this method, parametric studies were carried out. The effects of the strain-hardening behavior and pipe geometry on the deformability of the high-grade pipelines were examined.

Simulation and Analysis on Dynamic Response Characteristics of Six-High Rolling Mill Based on FEM

2012 ◽  
Vol 572 ◽  
pp. 154-159
Author(s):  
Kai Fu Mi ◽  
Jie Zhang ◽  
Hong Bo Li ◽  
Sheng Hui Jia ◽  
Yu Gang Chu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Working Conditions ◽  
Rolling Mill ◽  
Finite Element Method Simulation ◽  
Finite Element Models ◽  
Response Characteristics ◽  
Dynamic Response Characteristics ◽  
Set Up

The vibration influence on the quality of strip for 2180mm six-high cold tandem rolling mill is discussed. The abnormal frequency of mill is analysis by spot examination. The methods of numerical computation and finite element method simulation by the ANSYS are adopted to set up dynamic model of six-high mill. At the same time, the natural frequency of mill and the response to mill at different excitation is calculated. Comparing the analysis results with the data from the experiment, the finite element models presented in the thesis were proved to be an efficient and valid way to simulate actual working conditions.

Sign in / Sign up

Export Citation Format

Share Document