Application of AutoBank in the Dike Reinforcement Calculation of Lower Qinhe River

2014 ◽  
Vol 638-640 ◽  
pp. 766-769
Author(s):  
Wen Juan Cui ◽  
Li Qin Li ◽  
Wei Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Control Measures ◽  
The Finite Element Method ◽  
Reinforcement Scheme ◽  
Important Method ◽  
Seepage Control ◽  
Before And After ◽  
Reinforcement Design ◽  
River Dike

Calculation of seepage stability is important method in selection and justification of reinforcing dike seepage control measures. In the reinforcement design of the Qinhe river dike downstream, the finite element method of AutoBank is used to calculate the seepage stability of the dike reinforced before and after, and an economic and reasonable reinforcement scheme is selected then.

The Effect of Curtain Boundary on the Dam Foundation Seepage Control

2014 ◽  
Vol 638-640 ◽  
pp. 755-758
Author(s):  
Shao Jun Huo ◽  
Fu Guo Tong ◽  
Gang Liu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Calculation ◽  
Numerical Analysis ◽  
Boundary Conditions ◽  
The Finite Element Method ◽  
Dam Foundation ◽  
Seepage Control ◽  
Main Work ◽  
Element Method

The dam foundation seepage control is usually a main work of dam design. This paper presented the effects of different concrete curtain boundary conditions on the dam foundation seepage control through numerical calculation with the finite element method. The results show that the depth of concrete curtain strongly depends on the permeability of dam foundation. The middle of curtain should be deeper than its sides if the permeability of central riverbed is higher. Therefore the design of curtain should be based on the numerical analysis of the dam foundation seepage with different curtain boundary conditions in order to make sure the safety and economy.

scholarly journals Case Study of Support Frame Optimization Using a Distant Load

2020 ◽  
Vol 12 (3) ◽  
pp. 974
Author(s):  
Paweł Lonkwic ◽  
Krzysztof Przystupa ◽  
Tomasz Krakowski ◽  
Hubert Ruta
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Structure Optimization ◽  
Strength Criterion ◽  
Frame Structure ◽  
The Finite Element Method ◽  
Optimization Analysis ◽  
Manufacturing Optimization ◽  
Before And After

This article presents the results of the structure optimization for the power unit carrying frame of a friction lift by means of numerical calculations using the finite element method (FEM). Optimization analysis covered the frame structure. The analysis was focused on strength optimization with the use of a remote load and on manufacturing optimization with attention paid to the operating times necessary to complete the production process of the carrying frame subassemblies. The Solidworks simulation program was used to optimize the frame in terms of the strength criterion. The program allowed both quantitative and qualitative assessments of the frame material effort before and after optimization.

Analysis the Cable Replacement Method of Tianjin Yonghe Bridge

2011 ◽  
Vol 71-78 ◽  
pp. 1383-1387 ◽  
Author(s):  
Wen Juan Yao ◽  
Wu Yang ◽  
Xiao Yu Liu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress State ◽  
Main Beam ◽  
The Finite Element Method ◽  
Replacement Method ◽  
Replacement Process ◽  
Before And After ◽  
Element Method

Taking Tianjin Yonghe bridge for example, the finite element method is adopted to simulate each stages of cable replacement process, the dates of tension, the alignment of main beam and the change of stress before and after cable replacement are compared and analysed, The measured value is greatly consistent with calculated value, Stress state of the bridge has been greatly improved, the weight of main beam bearing by the cable will be shared by a few closed cable after unloading, so the cables which are more serious corroded should be replaced.

scholarly journals The Influence of Wood Modification on Transfer Function of a Violin Bridge

2020 ◽  
Vol 71 (2) ◽  
pp. 163-169
Author(s):  
Miran Merhar ◽  
Miha Humar
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Transfer Function ◽  
Material Properties ◽  
Transfer Functions ◽  
Dynamic Properties ◽  
The Finite Element Method ◽  
Wood Modification ◽  
Before And After ◽  
Element Method

The violin bridge is an important component of a violin since it transmits the excitation forces from the string to the violin body. Depending on its structure, at a certain frequency spectrum, the bridge acts as a damper or amplifier of excitation forces, which depends on its transfer function. In the study, transfer functions in the range from 400 Hz to 7000 Hz in vertical directions of 3 bridges were measured. The bridges were made from maple wood and supplied by different manufacturers. The bridges were then thermally modified, and the transfer functions were measured again. To determine the influence of thermal modification on material properties, a sample of maple wood was also modified together with the bridges, and the modulus of elasticity and shear modulus before and after the modification were measured. Using Ansys software, a bridge was modelled by the finite element method, by which natural frequencies and transfer functions before and after the modification were calculated. It can be confirmed from the research that wood modification influences the bridge transfer function and that the finite element method can be used to determine the dynamic properties of the bridge by knowing the wood material properties and, therefore, to predetermine the transfer function of the violin bridge before its production.

scholarly journals Study on slope reinforcement effect based on FEM vegetation

2020 ◽  
Vol 198 ◽  
pp. 02028
Author(s):  
Chang-yi Yu ◽  
Ming-yue Lu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Analysis Tool ◽  
The Finite Element Method ◽  
Reinforcement Effect ◽  
Environment Friendly ◽  
Reinforcement Scheme ◽  
Slope Reinforcement ◽  
Simulation Results ◽  
Element Method

With the increasing requirements of environmental protection, the slope reinforcement method is becoming environment-friendly. In recent years, more and more attention has been paid to the study of slope reinforcement by vegetation, and the mechanism of vegetation reinforcement has been initially established, but it is not common to study vegetation reinforcement by numerical reappearance. On the basis of reviewing the mechanism of slope reinforcement by vegetation, this paper studies the vegetation reinforcement scheme of a slope by finite element method. The results show that the finite element method can be used for vegetation reinforcement simulation, and the simulation results are combined with reality. The method in this paper provides a reference for the analysis of similar problems, and also provides a reliable analysis tool for the analysis of slope reinforced by vegetation.

Analysis of the Ship Loader's Vibration Mode in the Roll-On Process and the Reinforcement Scheme

2013 ◽  
Vol 721 ◽  
pp. 536-540
Author(s):  
Wen Biao Zhang ◽  
Shu Min Wan ◽  
Bin Lin ◽  
Meng Lai Zhu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Vibration Frequency ◽  
Vibration Mode ◽  
Parametric Modeling ◽  
The Finite Element Method ◽  
Reinforcement Scheme ◽  
Vibration Performance ◽  
Element Method

The roll-on process of the ship loader is studied with the finite element method in this paper. The principle and the scheme of the parametric modeling for the ship loader have been discussed. The vibration frequency and the vibration mode of the ship loader in the roll-on process have been researched, and the weaknesses in the structure of the ship loader have been founded. Based on the above discussion, the reinforcement scheme of the ship loader has been put forward, and the vibration mode and frequency of the strengthened ship loader in the roll-on process have been analyzed. With the comparison of the original one, the anti-vibration performance of the strengthened ship loader has been improved, the reinforcement scheme has been proved to be a worthy one in the roll-on process.

Research on the Rigidity of Continuous Beam with Equal Span under the Temperature Load

2011 ◽  
Vol 255-260 ◽  
pp. 846-850
Author(s):  
Yong Shen Zhang ◽  
Yan Ying Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Concrete Structure ◽  
Bending Moment ◽  
Continuous Beam ◽  
The Finite Element Method ◽  
Construction Engineering ◽  
Axial Tension ◽  
Temperature Load ◽  
Before And After

Cracks appeared in concrete structure is always concerned in construction engineering. As the cracks appear, the rigidity of structure will descend. So only the combination of slip theory and the non-slip theory could reflect the development of cracks in the course of analysis of cracks development. For axial tension and bending components, stiffness changes before and after cracking. The continuous beam with equal span is analyzed under the temperature load by the finite element method. As the cracks with different space appear, there is an abrupt bending moment with every crack. Different crack spacing, crack steep drop differently. So the wider the crack’s space is, the higher the abrupt bending moment is.

Effect of Orientation and Pre-Tension on Stresses Distribution on V-Die Bending Processes by Finite Element Method

2020 ◽  
Vol 38 (5A) ◽  
pp. 636-648
Author(s):  
Adil S. Jabber ◽  
Aseel H. Abed ◽  
Anwar H. Zabon
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Rolling Direction ◽  
The Finite Element Method ◽  
Regular Distribution ◽  
Significant Difference ◽  
Before And After ◽  
Alternative Approaches ◽  
Distribution Of Stresses ◽  
Element Method

Simulation of metal forming processes using the Finite Element Method (FEM) is a well-established procedure, being nowadays possible to develop alternative approaches, such as inverse methodologies, in solving complex problems. This study investigated the effect of orientation and pre-tension on stresses distribution numerically by software ANSYS 19 using the finite element method. The pre-tension is 55% from total strained in each rolling direction. The results show that the orientation has a significant effect on stresses distribution and stress value before and after pre-tension 55%. Although there is a regular distribution of stresses in three direction, but there is significant difference in the values of stresses in each of (0, 45, 90) degrees. The highest value of the stress is in the 0̊ to rolling direction, while the least value of the stress recorded in 45̊ to rolling direction. The pre-tension has a greater impact on stresses distribution and stress value. Although, there is a regular distribution of stresses in blank before and after pre-tension, but there is significant difference in the values. Where in 0 degree on rolling direction the stresses increased by 31.7% from their values before pre-tension, while in 45 degrees on rolling direction the stresses increased by 35.6% and in 90 degrees on rolling direction the stresses increased by 23.6% from their values before pre-tension.

Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20868-20875 ◽  
Author(s):  
Junxiong Guo ◽  
Yu Liu ◽  
Yuan Lin ◽  
Yu Tian ◽  
Jinxing Zhang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interfacial Effect ◽  
Infrared Photodetector ◽  
The Finite Element Method ◽  
Ferroelectric Domains ◽  
Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

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