The Bearing Capacity of Excavated Pile under Load Test and Finite Element Analysis

2012 ◽  
Vol 256-259 ◽  
pp. 388-393
Author(s):  
Feng Shan Hao ◽  
Ying Guo ◽  
Yu Huang
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Surface Subsidence ◽  
Load Test ◽  
Constitutive Relationship ◽  
Element Analysis ◽  
Finite Element Software ◽  
Finite Theory ◽  
Coulomb Model ◽  
Method Construction

This paper is used to study on the analysis and prediction of surface subsidence caused by pipe roof reinforcement method construction. Take one of the Shenyang's sewage disposal projects to be investigated, it monitored on field surface subsidence in the construction of under drain. During the measurement and monitoring, except for conventional measurement of surface subsidence according to code and peripheral convergence and so on, in order to analysis changes of stress and strain of the pipe roof in the whole construction of under drain. It also respectively arranges JMZX-212 intelligent string type of strain gauge in both internal and external sides of vault and hence. It used the Element Birth/Death of finite element software basing on the field data, using elastic-plastic and nonlinear finite element method. Material constitutive relationship used moor-coulomb model, simulating the process of tunnel of excavation and support, researching and stimulating the surface subsidence. The surface settlement of value was calculated applying finite theory via the numerical simulation, it based on prototype of engineering, which was approximately in accord with the measured value in field. The correctness of soil constitutive model chosen and boundary conditions used is verified, meanwhile, the numerical simulation shows the validity of the method .the results provide reference to similar construction method in the future.

The Analysis of Surface Subsidence Caused by Pipe Roof Reinforcement Method Construction in Hunhe Underdrain

2012 ◽  
Vol 256-259 ◽  
pp. 535-542
Author(s):  
Xiang Dong Zhang ◽  
Qing Wen Li ◽  
Xue Bing Gu ◽  
Gui Xiu Li
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Surface Subsidence ◽  
Constitutive Relationship ◽  
Stress And Strain ◽  
Nonlinear Finite Element Method ◽  
Finite Element Software ◽  
Coulomb Model ◽  
Element Theory ◽  
Method Construction

This paper is used to study on analysis and prediction of surface subsidence caused by pipe roof reinforcement method construction. Take one of the Shenyang's sewage disposal projects to be investigated, it monitored on field surface subsidence in construction of underdrain. During the measurement and monitoring, except for conventional measurement of surface subsidence according to code and peripheral convergence and so on, in order to analysis changes of stress and strain of the pipe roof in whole construction of underdrain. it respectively arranges JMZX-212 intelligent string type of strain gauge in both internal and external sides of vault and hance. It used the Element Birth/Death of finite element software basing on field data, using elastic-plastic and nonlinear finite element method. Material constitutive relationship used mohr-coulomb model, simulating process of tunnel of excavation and support, researching and stimulating surface subsidence. Value of surface settlement was calculated via numerical simulation in applying finite element theory, it based on prototype of engineering, which was in accord with measurement value in field. The correctness of soil constitutive model chosen and boundary conditions used is verified, meanwhile, numerical simulation shows validity of method.

Finite Element Analysis of Double Curvature and Large-Area Workpiece in Hot Gas Bulge-Forming of Polycarbonate (PC) Sheet

2009 ◽  
Vol 16-19 ◽  
pp. 500-504
Author(s):  
Zhen Xiu Hou ◽  
Nan Zhang ◽  
En Ren Liu ◽  
Zhi Liu ◽  
An Feng ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Geometrical Shape ◽  
Longitudinal Stress ◽  
Large Area ◽  
Element Analysis ◽  
Blank Holder ◽  
Finite Element Software ◽  
Hot Gas ◽  
Double Curvature

To explore geometrical shape, stress distribution, strain distribution and wall thickness of product in the process of polycarbonate hot gas bulge forming, numerical simulation of 4mm PC double curvature and large-area workpiece with the chord 1050mm has been conducted by the finite element software DYNAFORM. The results indicate that the deformation of large-area workpiece starts from blank holder to sheet center, and the maximum latitudinal stress and longitudinal stress is located in the center of PC sheet. The maximum reducing rate is approximate to 6.4%. The experimental results fit well with the numerical simulation.

Technological Process Optimization of Hot-Machining Numerical Simulation

2013 ◽  
Vol 364 ◽  
pp. 474-477
Author(s):  
Yin Ping Huang ◽  
Min Tua Ma ◽  
Fu Ping Ning ◽  
Rui Fen Chen
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Casting Process ◽  
Analysis Method ◽  
Element Analysis ◽  
Finite Element Software ◽  
Analysis Process ◽  
The Finite Element Analysis ◽  
Hot Machining ◽  
Analysis System

Applying the CAD/CAE method and the finite element analysis system, It was the research of the optimization technology about diesel body of the ship in the casting process in the paper. There are the functions of finite element software and application method in the paper, too. The analysis method can forecast the castings defects and advance the quality control. Applying the HyperMesh module of finite element software, we can cut the optimization period and realize the flow restructure analysis process to large-scaled complex castings.

Temperature Field Calculation of Mass Concrete Anchor

2012 ◽  
Vol 166-169 ◽  
pp. 1141-1144
Author(s):  
Hai Tao Wan ◽  
Li Min Zhao
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Temperature Field ◽  
Suspension Bridge ◽  
Field Calculation ◽  
Analysis Model ◽  
Element Analysis ◽  
Finite Element Analysis Model ◽  
Finite Element Software

Gravity anchor is one of essential forced components of steady suspension bridge. The paper takes the example of the finite element numerical simulation of steady suspension bridge gravity anchor, main contents include: First, performance parameters of concrete and hydration heat of cement is collected, the one-fourth block of anchor model is established by large-scale general finite element software ANSYS. The process of establishing finite element analysis model includes the input of the model parameters, the boundary conditions set of finite element model, and the mesh of finite element analysis model. Then, the numerical simulation computation to temperature field of gravity anchor is carried by finite element software ANSYS. Finally, from the temperature field distribution curves, studying the temperature distribution rule of concrete pouring and drawing some conclusions.

Design and Numerical Simulation on Concrete Two-Way Slab Strengthened with Partially Bonded Steel Plate

2014 ◽  
Vol 919-921 ◽  
pp. 64-67
Author(s):  
Ji Hong Hu ◽  
Xiu Cai Li
Keyword(s):  
Finite Element ◽  
Steel Plate ◽  
Design Method ◽  
Superposition Principle ◽  
Element Model ◽  
Load Test ◽  
Element Analysis ◽  
Finite Element Software ◽  
The Finite Element Analysis ◽  
Strength And Stiffness

Taking structure strengthen of a large hotel as the engineering background, based on superposition principle, put forward the design method of concrete two-way slab strengthened with partially bonded steel plate. According to the finite element analysis, the solid finite element model is established, and then the stress, strain and deflection of two-way slab strengthened with bonded steel plate is obtained, at the meantime compared with the load test datum in situ. The analysis results show that the finite element software is a reliable tool applied to analyze the design of two-way slab strengthened with bonded steel plate. When the increasing load is larger, partially bonding steel plate strengthening has more advantage and economize than bonding carbon fiber strengthening on two-way slab, meanwhile that slab strengthened with partially bonded steel plate has better mechanical properties, strength and stiffness.

Finite Element Analysis of the Effect of Blank Holder Force on Deep Drawing of Bottom of Vacuum Flask

2011 ◽  
Vol 335-336 ◽  
pp. 483-486
Author(s):  
Liu Ru Zhou ◽  
Xian Wen Hu
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Deep Drawing ◽  
Blank Holder Force ◽  
Element Analysis ◽  
Blank Holder ◽  
Finite Element Software

Numerical simulation of deep drawing of bottom of vacuum flask is made by means of finite element software ANSYS/LS-DYNA and the potential defect was analyzed. The influence of the blank holder force on deep drawing quality is discussed .The results show that the maximal value of stress and thickness appears in the round corners of die .The maximal increased thickness is sheet flange and the maximal thinning is the round corners of punch. The larger is the blank holder force, the less equal is the thickness and the poorer deep drawing quality.

scholarly journals Numerical Simulation for the Honeycomb Core Sandwich Panels in Bending by Homogenization Method

2021 ◽  
Vol 15 ◽  
pp. 88-94
Author(s):  
Luong Viet Dung ◽  
Dao Lien Tien ◽  
Duong Pham Tuong Minh
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Sandwich Plate ◽  
Model Building ◽  
Computation Time ◽  
Cad Model ◽  
Honeycomb Core ◽  
Element Analysis ◽  
Finite Element Software ◽  
3D Solid

Nowadays, with the continuous development of science and technology, computer software has been widely applied and is increasingly popular in many fields such as the automobile, aviation, space, and shipbuilding industries. Numerical simulation is an important step in finite element analysis and product design optimization. However, it is facing challenges of reducing CAD model building time and reducing computation time. In this study, we have developed a homogenization model for the honeycomb core sandwich plate to reduce the preparation of the CAD model as well as the computational times. The homogenization consists of representing an equivalent homogenized 3D-solid obtained from the analysis calculation in-plane properties of honeycomb 3D-shell core sandwich plate. This model was implemented in the finite element software Abaqus. The simulations of tensile, in-plane shear, pure bending, and flexion tests for the case of the 3D-shell and 3D-solid models of the honeycomb core sandwich will be studied in this paper. Comparing the results obtained from the two models shows that the 3D-solid model has close results as the 3D-shell model, but the computation time is much faster. Thereby the proposed model is validated.

Analysis of Pipe-Soil Interaction for a Miniature Pipejacking

2006 ◽  
Vol 22 (3) ◽  
pp. 213-220 ◽  
Author(s):  
K. J. Shou ◽  
F. W. Chang
Keyword(s):  
Finite Element ◽  
Failure Mechanism ◽  
Physical Modeling ◽  
Driving Force ◽  
Numerical Models ◽  
Surface Subsidence ◽  
Finite Element Software

AbstractIn this study, physical and numerical models were used to analyze pipe-soil interaction during pipejacking work. After calibrating with the physical modeling results, the finite element software ABAQUS [1] was used to study the pipejacking related behavior, such as surface subsidence, failure mechanism, pipe-soil interaction, etc. The results show that the driving force in the tunnelling face is very important and critical for pipejacking. Surface subsidence is mainly due to the lack of driving force, however, excessive driving force could cause the unfavorable surface heaving problem. It also suggests that the depth of the pipe is critical to determine a proper driving force to stabilize the tunnelling face.

Multi-Step Forward Finite Element Method for the Numerical Simulation of Sheet Metal Forming

2011 ◽  
Vol 474-476 ◽  
pp. 251-254
Author(s):  
Jian Jun Wu ◽  
Wei Liu ◽  
Yu Jing Zhao
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Deep Drawing ◽  
Metal Forming ◽  
Mapping Method ◽  
Constitutive Relationship ◽  
Element Method

The multi-step forward finite element method is presented for the numerical simulation of multi-step sheet metal forming. The traditional constitutive relationship is modified according to the multi-step forming processes, and double spreading plane based mapping method is used to obtain the initial solutions of the intermediate configurations. To verify the multi-step forward FEM, the two-step simulation of a stepped box deep-drawing part is carried out as it is in the experiment. The comparison with the results of the incremental FEM and test shows that the multi-step forward FEM is efficient for the numerical simulation of multi-step sheet metal forming processes.

Finite Element Analysis of Main Stand of Ф140 Pipe Rolling Mill and Split Casting

2013 ◽  
Vol 690-693 ◽  
pp. 2327-2330
Author(s):  
Ming Bo Han ◽  
Li Fei Sun
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Rolling Mill ◽  
Analysis Model ◽  
Element Analysis ◽  
Pipe Rolling ◽  
Full Load ◽  
Finite Element Software ◽  
Theoretical Position ◽  
Technical Requirements

By using finite element software, the paper establishes the main stand analysis model of the Ф140 pipe rolling mill and provides the model analysis of main stand in cases of full load. Verify the design of main stand fully comply with the technical requirements .In this paper, it provides the theoretical position of split casting and welding method using electric slag welding.

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