A simulation analysis model for continuous surface miner and trucks operations using SLAM II

2020 ◽  
pp. 189-199
Author(s):  
W.H. Griffin
Keyword(s):  
Simulation Analysis ◽  
Analysis Model ◽  
Surface Miner ◽  
Continuous Surface

Construction Monitoring on Steel Truss Bridge’s Maintenance and Reinforcement

2018 ◽  
Vol 878 ◽  
pp. 89-94 ◽  
Author(s):  
Er Lei Wang
Keyword(s):  
Simulation Analysis ◽  
Analysis Model ◽  
Element Analysis ◽  
Construction Monitoring ◽  
Finite Element Analysis Model ◽  
Bridge Steel ◽  
Steel Truss ◽  
Stress And Deformation ◽  
Site Test

Implementing monitoring over construction process of old bridge’s reinforcement serves as an important measure to ensure construction quality and safety and realize the goal of reinforcement. This paper, with a case study of the maintenance and reinforcement project of Zhicheng Yangtze River Bridge (steel truss highway-railway combined bridge), adopted MIDAS to establish finite element analysis model, and with stress and deformation as monitoring parameters, completed the construction monitoring work, numerical simulation analysis and site test for the reinforcement project.

Dynamic Simulation Analysis of the Crane Hoisting Process Based on Adams

2014 ◽  
Vol 940 ◽  
pp. 132-135 ◽  
Author(s):  
Yi Fan Zhao ◽  
Ling Sha ◽  
Yi Zhu
Keyword(s):  
Dynamic Simulation ◽  
Simulation Analysis ◽  
Three Dimensional ◽  
Wire Rope ◽  
Dynamics Simulation ◽  
Dimensional Model ◽  
Analysis Model ◽  
Three Dimensional Model ◽  
Adams Software ◽  
Simulation Results

Established the dynamics simulation analysis model of crane hoisting mechanism based on the theory of dynamics in Adams software, and then through the three dimensional model of lifting mechanism dynamics entities, the constraints, load, drive can be added, the motion law can be defined to simulation analysis the change of the force of wire rope, the change of displacement, velocity and acceleration of lifting weight in the lifting process. On the basis of the simulation results, it can make a great improvement for the structure of crane and provide a meaningful theoretical reference for the hoisting machinery innovation design.

DEM Analysis of Lateral Ballast Resistance of Sleeper during Dynamic Stability Process under Different Vibration Frequency

2014 ◽  
Vol 988 ◽  
pp. 315-318
Author(s):  
Bo Yan ◽  
Bin Hu ◽  
Ya Yu Huang ◽  
Tao Yong Zhou
Keyword(s):  
Dynamic Stability ◽  
Vibration Frequency ◽  
Simulation Analysis ◽  
Dynamic Parameter ◽  
Discrete Element ◽  
Field Trials ◽  
Analysis Model ◽  
Railway Ballast ◽  
Element Analysis ◽  
Ballast Resistance

Railway ballast dynamic stability operations is an important work in the line maintenance and repair operations, the selection of dynamic parameter is usually dependent on field trials and practical experience, for lack of theoretical basis. This paper creates discrete element analysis model of railway ballast using the discrete element method, the numerical simulations are carried out to study the lateral ballast resistance during dynamic stability process. We focus on the influence of vibration frequency during dynamic stability process; an optimal vibration frequency of the simulation analysis is obtained and compared with the recommended vibration frequency of a product of a China Railway Large Maintenance Machinery Company, it is found that the two vibration frequencies are basically consistent. This result verifies the correct validity of the discrete element analysis model of railway ballast during dynamic stability process.

Numerical Simulation of Galloping for Iced Quad-Bundled Conductor

2014 ◽  
Vol 1025-1026 ◽  
pp. 955-958 ◽  
Author(s):  
Jun Jie Shi ◽  
Ya Nan Li ◽  
Li Qin
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Simulation Analysis ◽  
Time Integration ◽  
Vertical Vibration ◽  
Analysis Model ◽  
Element Analysis ◽  
Beam Elements ◽  
Time Integration Method ◽  
Wake Interference

The theoretical study of galloping can effectively promote anti-galloping techniques. Cable element is utilized to imitate the bundled conductor, and beam elements are used to simulated the spacers, established galloping finite element analysis model which can consider sub-conductors wake interference. The finite element equation was solved by time integration method and the calculation program was compiled by MATLAB. Through numerical simulation analysis, compared the dancing in the case of considering the effect of the sub-conductor wake and ignoring the effect of the sub-conductor wake. The results showed that considering the effect of the wake on aerodynamic loads has a greater vertical vibration amplitude. This method can provide reference for the study of prevention technology on dancing.

Numerical Simulation Analysis in Cooling Temperature Field and Bending Deformation after Rolling of 100-Meter Rail

2011 ◽  
Vol 121-126 ◽  
pp. 4523-4527
Author(s):  
Yu Yan Liu ◽  
Yan Wang ◽  
Lin Chen ◽  
Ge Li ◽  
Jian Guo Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Large Scale ◽  
Simulation Analysis ◽  
Analysis Model ◽  
Cooling Process ◽  
Element Analysis ◽  
Stress Variation ◽  
Finite Element Analysis Model ◽  
Bending Deformation

The paper established U75V 100-meter rail 3-D transient non-liner finite element analysis model about U75V 100-meter rail by using the large-scale non-liner finite element analysis software ABAQUS. By analyzing the different positions in the section of the temperature variation, the changes of bending degree and the residual stress variation after the bending deformation have changed. Based on the 100-meter straight rail in natural cooling under the cooling process, simulation results showed that in the cooling process, deflection change with time mainly divided into four stages; In consideration of the friction effect, the flat rail cold curve for its deformation among roughly flat, the curve about either ends, the scope for bending is 18 meters, the maximal displacement is 1.88 meters while the flat rail occured end colding.

Corn-Seed Modeling and Simulation Analysis Based on Shape Features

2014 ◽  
Vol 602-605 ◽  
pp. 779-782 ◽  
Author(s):  
Hui Yan ◽  
Duo Long
Keyword(s):  
Modeling And Simulation ◽  
Simulation Analysis ◽  
Modeling Method ◽  
Combination Method ◽  
Shape Features ◽  
Analysis Model ◽  
Corn Seed ◽  
Simulation Results ◽  
Analysis Models

Based on the shape features of corn seed, this paper proposes the modeling method of manual combination of eight spheres, which constructs the analysis models for corn seed Ji Feng 218 and Chang Dan 228 with the purpose of better simulation of corn seeds. Furthermore, another analysis model for Chang Dan 228 is also built with reference to the four-sphere combination method. The comparison between the simulation results from these two models demonstrates the feasibility and superiority of the model of combination of eight spheres.

Study on the Meshing Feature and Contact Strength of WN Gear Driving in Load Bearing

2012 ◽  
Vol 229-231 ◽  
pp. 406-409
Author(s):  
Cheng Chao Li ◽  
Dian Hua Chen ◽  
Yu Guang Li ◽  
Xiao Kai Mu
Keyword(s):  
Simulation Analysis ◽  
Three Dimensional ◽  
Helix Angle ◽  
Contact Strength ◽  
Analysis Model ◽  
Element Analysis ◽  
Gear Drive ◽  
Gear Contact ◽  
Dynamic Meshing ◽  
Center Distance

According to characteristics of WN gear multi-point meshing and double-arc tooth contact, the finite element analysis model of the WN gear drive is established by Pro/E and ANSYS modeling techniques. The contact way and meshing feature of the WN gear under the different conditions and parameters are studied by three-dimensional dynamic meshing simulation analysis of gear drive. The analysis model of contact strength at loading driving is established by three dimensional geometric contact characteristics and elastic deform theory. Impact of helix angle and center distance error in the calculation of WN gear contact strength on maximum contact stress is analyzed. The results show that increase of the helix angle and a slight decrease of the center distance can improve the contact strength.

Discrete Element Method Analysis of Mechanical Properties of Railway Ballast during Tamping Process under Different Amplitude

2012 ◽  
Vol 233 ◽  
pp. 224-227 ◽  
Author(s):  
Tao Yong Zhou ◽  
Bin Hu ◽  
Xue Jun Wang ◽  
Bo Yan
Keyword(s):  
Mechanical Properties ◽  
Discrete Element Method ◽  
Simulation Analysis ◽  
Discrete Element ◽  
Practical Experience ◽  
Field Trials ◽  
Analysis Model ◽  
Railway Ballast ◽  
Element Analysis ◽  
Element Method

Railway ballast tamping operations is an important work in the line maintenance and repair operations, the selection of tamping parameter is usually dependent on field trials and practical experience, for the mechanical properties of railway ballast is difficult to measure and describe. This paper creates discrete element analysis model of railway ballast using the discrete element method, the numerical simulations are carried out to study the mechanical properties of railway ballast during tamping process. We focus on the influence of amplitude during tamping process; an optimal amplitude of the simulation analysis is obtained and compared with the recommended amplitude of Plasser & Theurer Company, it is found that the two amplitudes accord. This result verifies the correct validity of the discrete element analysis model of railway ballast during tamping process.

Car Seat Backrest Static Strength Experiment and Simulation

2009 ◽  
Vol 16-19 ◽  
pp. 178-182 ◽  
Author(s):  
Zhi Wei Xu ◽  
Zhong Qi Sheng ◽  
Hong Hong Zhang ◽  
Yong Xian Liu
Keyword(s):  
Finite Element ◽  
Simulation Analysis ◽  
Model Simulation ◽  
Static Strength ◽  
Analysis Model ◽  
Element Analysis ◽  
Shell Elements ◽  
Car Seat ◽  
Model And Simulation ◽  
The Cost

According to the characteristics of car seat structure and the distribution of car seat load, the finite element static strength model of the car seat is constructed in this paper. The model contains shell elements and beam elements. Some seat structure elements such as welding connection, screw connection, pin connection are simplified in the model. Simulation analysis of the static characteristics of car seat backrest frame model is carried out. At the same time, the experimental research on the static strength characteristics of the back seat is made by the measurements of non-electric physical quantities. By comparing and analyzing the results of experiment and computer simulation of seat static strength, the practicability and credibility of the seat static finite element analysis model and simplified model constructed in this paper are verified. It also proves that the simulation of various connecting forms of the seat structure is effective and is a reliable method in the structural design of the car seat. The model and simulation of the car seat can reduce the cost and shorten the design period.

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