Construction Numerical Simulation of Cable-Supported Barrel Shell Structure Considering Construction Nonlinearity

2014 ◽  
Vol 548-549 ◽  
pp. 1748-1752
Author(s):  
Jia Li ◽  
Jing Hai Yu ◽  
Xiang Yu Yan ◽  
Hong Bo Liu
Keyword(s):  
Numerical Simulation ◽  
Shell Structure ◽  
Simulation Analysis ◽  
Mutual Influence ◽  
Reference Value ◽  
Construction Process ◽  
Analysis Method ◽  
Nonlinear Simulation ◽  
Similar Construction ◽  
Structure Layout

Based on an actual construction process, this paper put forward a nonlinear simulation analysis method, which can take the mutual influence between structural forming and the tensioning of the active-cables into account. The proposed method shows good performance in solving the problem of structure layout finding and the pre-stress calculation of pre-tensioning tendons by stages and in group. The method has clear mechanical conception and is of reference value for similar construction analysis.

Research on Monitoring Technology of Long-Span Prestressed Concrete Construction

2012 ◽  
Vol 170-173 ◽  
pp. 3145-3152
Author(s):  
Ji Liang Liu ◽  
Ming Jin Chu ◽  
Shu Dong Xu ◽  
Ying Ying Yin
Keyword(s):  
Finite Element ◽  
Prestressed Concrete ◽  
Concrete Beam ◽  
Simulation Analysis ◽  
Reference Value ◽  
Element Model ◽  
Construction Process ◽  
Finite Element Software ◽  
Prestressed Concrete Beam ◽  
Comprehensive Service

The author performs simulation analysis on construction process of roofing prestressed concrete beam of comprehensive service center in Beijing Institute of Civil Engineering and Architecture by finite element software Midas/Gen, so as to determine the monitoring programme according to the analysis results. The monitoring results indicate that the structure is safe; the theoretical value of simulation analysis is well matched with actual monitoring value, which means that the finite element model of construction process of roofing prestressed concrete beam is correct, the simulation method is feasible and the construction process is reasonable. It has important reference value for construction and monitoring of subsequent similar projects.

FLAC3D Numerical Simulation Study on Deformation of Subgrade Construction Process

2011 ◽  
Vol 90-93 ◽  
pp. 466-470
Author(s):  
Ya Ni Lu ◽  
Gai Wei Li
Keyword(s):  
Numerical Simulation ◽  
Elastic Modulus ◽  
Simulation Study ◽  
Simulation Analysis ◽  
Lateral Displacement ◽  
Unit Weight ◽  
Deformation Characteristics ◽  
Construction Process ◽  
Main Research ◽  
Road Slope

Numerical simulation analysis of the deformation characteristics in the construction process of subgrade are conducted. Based on the different filling unit weight and roadbed elastic modulus conditions, the main research is that vertical settlement of roadbed center and the horizontal lateral displacement of road slope toe change with the increase of the depth of filling. It is believed that the lightweight filling should be selected or the roadbed elastic modulus will be enhanced as much as possible under the condition that satisfies various standard, which can improve the settlement deformation of highway.

Study on Damage Identification of Simple Beam Bridge Based on the First-Order Curvature Mode Ratio

2014 ◽  
Vol 578-579 ◽  
pp. 1032-1036
Author(s):  
Yong Qin
Keyword(s):  
Numerical Simulation ◽  
Damage Identification ◽  
Simulation Analysis ◽  
Reference Value ◽  
Index Method ◽  
Structure Damage ◽  
First Order ◽  
Damage Degree ◽  
Practical Engineering ◽  
Beam Bridge

Starting with damage identification index method on the basis of the curvature mode, the first-order curvature mode ratio is proposed, and then it is made a numerical simulation analysis for a single span simple beam bridge with ANSYS. The identification of structure damage degree under the damage on the single position is studied. The fitted polynomial based on the derivation of the first-order curvature mode ratio can estimate the damage degree; it has a good reference value for the damage detection of structures in practical engineering.

Safety Analysis on the Variable Constraint Space Reticulated Shell Structures

2011 ◽  
Vol 368-373 ◽  
pp. 1613-1616
Author(s):  
Xiu Li Wang ◽  
En Ping Jin ◽  
Yan Peng Zhu
Keyword(s):  
Shell Structure ◽  
Reference Value ◽  
Shell Structures ◽  
Optimized Design ◽  
Quality And Safety ◽  
Analysis Method ◽  
Long Span ◽  
Temporary Support ◽  
Multiple Variable ◽  
Constraint Structure

During construction, the spatial shell structure is the variable constraint structure system. In order to guarantee the construction quality and safety, its addition or disassembly scheme of temporary support must be optimized design. Based on variable constraint structure analysis method, the paper simulated and analyzed possible multiple variable constraint scheme during the long-span space reticulated shell structural construction, and put forward the principle and method abide by addition and disassembly design of temporary support. For other variable constraint structures similar to the spatial shells, the principle and method proposed has a very great reference value.

Numerical Simulation Analysis on Repairing Hole of UAV Wing

2013 ◽  
Vol 690-693 ◽  
pp. 2891-2895
Author(s):  
Guo Dong Jin ◽  
Li Bin Lu ◽  
Liang Xian Gu ◽  
Juan Liang
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Service Life ◽  
Simulation Analysis ◽  
High Stress ◽  
Reference Value ◽  
Safety Standards ◽  
Aerial Vehicle ◽  
Element Method

Parachute recovery of UAV is often caused of holes and other injuries on wings, that are required repair and maintenance. The surface of the patch will form the high stress area, that affects UAV using life and safety .But repair method is good or bad directly affects size of the high stress area. Based on finite element method, the broken hole repairing method was formulated and validated by ANSYS. The method could minimize the high stress area as far as possible, and economically repair broken hole of wing in certain precision and safety standards condition. It has a certain reference value for UAV repair and management, and has reference significance for extending the service life of the UAV. Key words: Finite element method; Unmanned Aerial Vehicle (UAV); Simulation; Hole of wings

Design of Virtual Prototype for Cold Roll Forming Machine of Side Panel of Engineering Vehicles and Numerical Simulation of the Forming Process

2013 ◽  
Vol 753-755 ◽  
pp. 159-162
Author(s):  
Qiu Bo Huang ◽  
Jun Rui Song ◽  
Qing Bo Yang
Keyword(s):  
Numerical Simulation ◽  
Simulation Analysis ◽  
Reference Value ◽  
Roll Forming ◽  
Cold Roll Forming ◽  
Forming Process ◽  
Side Plate ◽  
Pass System ◽  
Cold Roll ◽  
Solid Works

In this paper, based on the engineering vehicle’s side plate cold roll forming machine developed by a company, we use 3D solid modeling software Solid Works to complete the establishment of a 3D model. On the basis of explicit dynamics elastoplastic finite element method basic theory, we make numerical simulation analysis of the metal plate’s forming process by using ANSYS/LS-DYNA module. According to the simulation results, we make repeated adjustment and optimization on its pass system and parameters. Through the numerical simulation of the forming process, we conclude the stress-strain distribution of the sheet metal. For similar products, the result has a certain reference value to the research of cold roll forming process and the design of cold roll forming equipments.

The Study on the Basic Theory of Gold Seamless Pipe Welding Numerical Simulation

2013 ◽  
Vol 456 ◽  
pp. 467-470 ◽  
Author(s):  
Wen Chao Qin ◽  
Jian Ru Qi ◽  
Li Xin Wang ◽  
Wei Hong Ye
Keyword(s):  
Numerical Simulation ◽  
Theoretical Basis ◽  
Simulation Analysis ◽  
Three Dimensional ◽  
Field Analysis ◽  
Analysis Method ◽  
Seamless Pipe ◽  
Pipe Welding ◽  
Reasonable Choice ◽  
Gold Industry

Based on the theory of FEM, we have established a viable three-dimensional dynamic simulation of welding field analysis method, heat distribution with a double ellipse as a welding heat source, to establish a reasonable boundary conditions, which is a reasonable choice of welding numerical simulation provides a theoretical basis, laying the groundwork for welding numerical simulation analysis of the gold industry.

Finite Element Analysis on the Directly Buried Heating Bent Pipeline with Many Break Angles

2013 ◽  
Vol 842 ◽  
pp. 415-419
Author(s):  
Bao Xian Qian ◽  
Fei Wang ◽  
Guo Wei Wang
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Simulation Analysis ◽  
Design Method ◽  
Engineering Practice ◽  
Analysis Method ◽  
Element Analysis ◽  
Current Design ◽  
Practical Engineering

In order to get the optimal design scheme of a directly buried heating bent pipeline with many fold angles in a certain practical engineering, this paper simulated the pipeline by the ANSYS finite element analysis software.Through applying different boundary conditions to the model, the stress was analyzed, the destroy forms of the pipeline and the positions of stress danger points were determined,and the fatigue life was checked according to BS EN. Compared with the current design method,adopting numerical simulation analysis method has greatly reduced the number of the usage of compensators and fixed piers, broke through the restrictions for larger fold angle in the standard,and at the same time, it has reduced the construction difficulties and the engineering investment,improved the reliability of the network,this paper has guiding significance to the engineering practice.

scholarly journals Influence of the Curvature of the Multipoint Die for Flexible Multipoint Stretch Bending on the Quality of Aluminum Profile

2020 ◽  
Vol 2020 ◽  
pp. 1-9 ◽  
Author(s):  
Yi Li ◽  
Rui Li ◽  
Ce Liang ◽  
Jicai Liang ◽  
Fei Teng
Keyword(s):  
Numerical Simulation ◽  
Rational Design ◽  
Simulation Analysis ◽  
Great Influence ◽  
Reference Value ◽  
Geometrical Parameters ◽  
Shape Error ◽  
Stress Strain ◽  
Shape Accuracy ◽  
Stretch Bending

The finite element numerical simulation method was used to study the stretch-bending process of asymmetric L-section aluminum alloy profiles. The geometrical parameters of the multipoint dies (MPDs) are studied to influence the shape accuracy and springback of the L-section profile after bending. The results show that the profile curvature of the MPD after the profile is bent has a great influence on the stress-strain distribution, springback value, and shape accuracy. In order to obtain uniform stress-strain of the profile and reduce the springback and shape error, the MPD is optimized by numerical simulation analysis, which has a certain reference value of providing a theoretical basis for the rational design of the flexible stretch-bending.

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