Numerical Simulation Analysis on the Temperature Field in Indirect Selective Laser Sintering of 316L

2013 ◽  
Vol 711 ◽  
pp. 209-213 ◽  
Author(s):  
Nai Fei Ren ◽  
Lei Jia ◽  
Dian Wang
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Temperature Field ◽  
Heat Source ◽  
Simulation Analysis ◽  
Selective Laser Sintering ◽  
Element Model ◽  
Cyclic Loads ◽  
Physical Experiments ◽  
Key Points

Using APDL programming language, an appropriate finite element model is created and the moving cyclic loads of Gauss heat source are realized. From the detailed qualitative analysis of the results, the variety laws of temperature field in indirect SLS are obtained. Plot results at different moments, temperature cyclic curves of key points and the curves of depth of fusion and width of fusion on the set paths, are of important guiding significance for subsequent physical experiments.

Numerical Simulation Analysis of the Groundwater’ Temperature Field in the Concentration Area of the Water Source Heat Pump Engineering

2012 ◽  
Vol 174-177 ◽  
pp. 3027-3030
Author(s):  
Wei Wei ◽  
Ming Zhong Wang ◽  
Jun Pan
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Temperature Field ◽  
Numerical Model ◽  
Heat Pump ◽  
Simulation Analysis ◽  
Water Source ◽  
Groundwater Temperature ◽  
Change Trend

In order to avoid the heat transfixion among users in the concentration area of the water source heat pump, a suitable layout of pumps for drawing and recharging wells is required. Finite element method is adopted to establish the numerical model of groundwater temperature to predict the change trend of water temperature. The results of the simulation indicate that the groundwater temperature change from 6.3 to 14.2 °C in winter, and from 11.5 to 21.2 °C in summer. These results meet the requirements of the drawing and recharging water in the water source heat pump engineering and are able to avoid the heat transfixion among users. The effect of drawing and recharging water in the water source heat pump engineering to the changes of the groundwater’s temperature field can be analyzed quantitatively through establishing the proper numerical simulation which provides a reference to scientifically design the layout of pumps for drawing and recharging water.

The Contact Simulation of CTP Imaging Drum and Plate on ANSYS

2012 ◽  
Vol 151 ◽  
pp. 484-489 ◽  
Author(s):  
Jie Fang Xing ◽  
Jie Zhang ◽  
Lu Jun He
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Finite Element Model ◽  
Optimization Design ◽  
Simulation Analysis ◽  
Element Model ◽  
Basic Knowledge ◽  
Dynamic Design ◽  
Design And Optimization ◽  
Finite Element Software

Introduce some basic knowledge, methods and theory of using the finite element software ANSYS to carry out contact analysis, and then establish the contact simulation analysis finite element model for CTP imaging drum and plate by using the software ANSYS. A numerical simulation analysis on the imaging drum and the plate indicates that the analysis results are consistent with the experimental results, so as to lay the foundation for the reliability and stability of dynamic design and optimization design of CTP imaging drum.

Temperature Field Numerical Simulation Analysis of 1000MW Ultra Supercritical Boiler’s Starting Water Separator

2012 ◽  
Vol 482-484 ◽  
pp. 651-654
Author(s):  
Na Li ◽  
Feng Ye
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Simulation Analysis ◽  
Element Model ◽  
Maximum Temperature ◽  
Safe Operation ◽  
Maximum Temperature Difference ◽  
Start Up ◽  
Water Separator ◽  
Distribution Laws

Aiming at the structural feature of starting water separator, a 3-D finite element model of temperature field is proposed. The starting water separator of a Ultra Supercritical Boiler(USB) has been numerically simulated by using of finite element soft ware Ansys. The boundary condition of the separator is determined. All of the working conditions are simulated. The results have the same distribution laws with the monitoring data of power plant. The maximum temperature difference between out wall and inner wall occurs in the temperature-rise period during the cold start-up, but the value between top wall and bottom wall is very lower. The simulation results can not only provide a basis for the thermal stress analysis and the life loss calculation but also provide rationalization proposal for the plant safe operation.

Finite Element Numerical Simulation Analysis on Deformation of Adjacent Building with Shallow Foundation due to Excavation

2013 ◽  
Vol 353-356 ◽  
pp. 403-406
Author(s):  
Yong Kang Yang ◽  
Xiao Yuan Li ◽  
Wu Yang ◽  
Chun Yan Feng
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Simulation Analysis ◽  
Horizontal Displacement ◽  
Element Model ◽  
Vertical Displacement ◽  
Shallow Foundation ◽  
Foundation Pit ◽  
Adjacent Building ◽  
Finite Element Numerical Simulation

Based on deformation of adjacent building with shallow foundation of foundation pit excavation, Midas GTS is adopted to establish the finite element model. Through the numerical simulation, the maximum horizontal and vertical displacement in different conditions, Influence of different SMW pile stiffness and influence of different anchor position are analyzed. The results show that (1) horizontal deformation of SMW pile is decreased at the anchor construction; (2) compared with maximum horizontal displacement of SMW pile with 25a25b28a, the maximum horizontal displacement of SMW pile with 28b is increased by 50.9, 43.3, 11.5% respectively; (3) compared with the second anchor at 1.5, 3.5m, the horizontal displacement of adjacent building is minimal by the second anchor at 2.5m.

Numerical Simulation Analysis of Temperature Field on Tympanites Roadbed

2013 ◽  
Vol 838-841 ◽  
pp. 1291-1294
Author(s):  
Jian Yi Yuan ◽  
Chun Feng Wang ◽  
Jian Hua Cheng ◽  
Ding Bang Zhang ◽  
Zhen Hua Wu
Keyword(s):  
Numerical Simulation ◽  
Temperature Field ◽  
Physical Model ◽  
Simulation Analysis ◽  
Frozen Soil ◽  
Permafrost Region ◽  
Key Points ◽  
Calculating Model

The physical model and calculating model of temperature field are founded according to the founded controlling equation. By simulating the changing progress of climate features, the temperature field of roadbed in permafrost region in different season was obtained. And some results are got by analyzing the diversity of temperature of key points. The last, the technology assumption of effectively controlling tympanites which combines replacing part frozen soil and resisting highway tympanites structure is brought up.

Numerical Simulation Analysis of H-Beam Steel Controlled Cooling

2013 ◽  
Vol 395-396 ◽  
pp. 1184-1189 ◽  
Author(s):  
Xiao Guang Yu ◽  
Xu Hao ◽  
Rui Miao
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Strain Field ◽  
Simulation Analysis ◽  
Element Model ◽  
Controlled Cooling ◽  
Stress Strain ◽  
Element Analysis ◽  
Beam Cooling ◽  
H Beam

The finite element analysis software soft ANSYS is used for researching H-beam hot rolling finite element model, temperature field and stress strain field. Then find the changes law in different water cooling conditions of the temperature field temperature distribution and the stress strain field. Find the heat coefficient of H-beam by using the optimization analysis to reduce the differences of the temperature and the stress strain value, and also reduce the deformation in H-beam cooling process. The controlled cooling parameters of H-beam under optimal conditions are determined by the simulation experiment and comparative analysis. While exploring the changes of H-beam microstructure, stress and hardness can provide the reference for the making and designing of reasonable controlled cooling technology.

The Numerical Simulation of Reinforced Particle Stress Concentration in Al-Si Alloy Rolling

2015 ◽  
Vol 719-720 ◽  
pp. 55-58
Author(s):  
Yan Ling Zhao ◽  
Xue Song Yang ◽  
Zi Yan Yun ◽  
Hong Bo Wang ◽  
Guan Hong Xu
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Temperature Field ◽  
Stress Concentration ◽  
Hot Rolling ◽  
Element Model ◽  
Simulation Method ◽  
Tensile Tests ◽  
Temperature Filed ◽  
Edge Cracks

Aiming at the problem that temperature filed changes can lead to edge cracks emerge to Al-Si alloy 4004 in the process of hot rolling, in this paper, finite element model of temperature field variations in the process of rolling have been established by the method of finite element numerical simulation. The relationship between temperature field variations and edge crack defects has been analyzed. The results show that temperature field of rolled piece is gradient variations, low in the center and high in the edge, metal accumulation in the edge, leading to stress concentration and forming cracks source, resulting in edge cracks arising in edge of roller piece. Finally, the reliability and accuracy of the numerical simulation method have been verified by hot-rolled tests and tensile tests. All the studies provide ideas for theoretical analysis of temperature variation during hot rolling and have important significance on improve the quality of products.

Numerical Simulation of SAW Heat Source in the External Longitudinal Magnetic Field in 16Mn Steel

2013 ◽  
Vol 762 ◽  
pp. 584-589 ◽  
Author(s):  
Yun Long Chang ◽  
Lin Lu ◽  
Xiao Long Liu ◽  
Bo Young Lee
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Finite Element ◽  
Heat Source ◽  
Longitudinal Magnetic Field ◽  
Assembly Language ◽  
Low Frequency ◽  
Element Model ◽  
Element Analysis ◽  
Weld Bead Formation

The finite element analysis on temperature field and stress field during submerged-arc welding (SAW) was carried out by means of assembly language of FORTRAN on the base of ABAQUS. A finite element model was established to study the effects on weld bead formation by using longitudinal magnetic field of low-frequency and different process parameters loaded with moving heat source. A practical SAW experiment was conducted to verify the results of the numerical simulation. It was shown that a molten pool with a wider weld face and a lower penetration could be obtained by the control of longitudinal magnetic field of low-frequency. In addition, the fusion line after this treatment was smoother than with conventional SAW. The results of practical SAW experiment were consistent with those of the numerical simulation. It was confirmed that the longitudinal magnetic field of low-frequency could contribute in diminishing the dilution rate and improving the performance of surfacing layers.

Analysis of Temperature Field of Nuclear Canned Pump and Thermal Deformation Calculation of the Shielded Can

2012 ◽  
Vol 588-589 ◽  
pp. 1862-1865
Author(s):  
Yue Jun An ◽  
Chun Ye Guo ◽  
Guo Ming Liu ◽  
Li Ping Xue
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Temperature Distribution ◽  
Heat Source ◽  
Theoretical Basis ◽  
Thermal Deformation ◽  
Field Data ◽  
Axial Direction ◽  
Element Model ◽  
Canned Motor

In order to find out the reason for deformation,cracking and leakage of the shielded can of nuclear canned motor and put forward the solution,a finite element model of 2-pole and 8kW canned motor in temperature field was created. Assigned materials and boundary conditions to each component and calculated the temperature distribution of the canned motor by equivalent heat source load method and display the distribution visibly.By combining with the temperature field data,obtained the temperature characteristics of the shielded can and calculated the thermal deformation based on the maximum temperature.The result of analysis show that the temperatures of each component are different,shielded can’s temperature rise is not uniformly distributed along the circumferential direction and the degree of thermal deformation along axial direction is larger than that along radial direction.The conclusion of this paper is conducive to understand the temperature distribution in canned motor and characteristics of thermal deformation in shielded can clearly,and provides an important theoretical basis for the development of new shielded can structure.

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