Temperature Field Simulation of Pure Al Solidified by PTC Method and PTC Medium

2011 ◽  
Vol 80-81 ◽  
pp. 168-172
Author(s):  
Lian Yong Zhang ◽  
Zhuang Ma ◽  
Fang Hong Sun ◽  
Yan Hua Jiang
Keyword(s):  
Phase Transition ◽  
Temperature Field ◽  
Latent Heat ◽  
Ansys Software ◽  
Pouring Temperature ◽  
Casting Technology ◽  
Cooling Medium ◽  
Field Simulation

Phase transition cooling (PTC), using the absorbed latent heat during the melting of phase transition cooling medium to cool and solidify alloys in the process of casting, is a new casting technology. Specimens of pure Al were prepared by this method in the paper. The temperature field of the casting was simulated with Ansys software. Parameters which affect the process of solidification were simulated too. The results showed that the pouring temperature of melt and the amount of phase transition medium have great effect on the process of solidification.

Research of Temperature Field Simulation on Electrode Wire Wear for WEDM

2011 ◽  
Vol 199-200 ◽  
pp. 1827-1831 ◽  
Author(s):  
Chao Jiang Li ◽  
Ji Cheng Bai ◽  
Yong Feng Guo ◽  
Ze Sheng Lu ◽  
Wei Ma
Keyword(s):  
Temperature Field ◽  
Electrical Discharge Machining ◽  
Work Piece ◽  
Machining Accuracy ◽  
Ansys Software ◽  
Field Simulation ◽  
Electrode Wire ◽  
Simulation Results ◽  
Simulation Parameters ◽  
Wire Wear

The wire electrical discharge machining (WEDM) technology is widely used in the field of mold industry, aerospace, automobile and so on. However, in the discharge machining, the electrode wire wear will affect the machining accuracy and machining efficiency. There are many factors that affect the electrode wire wear, and cutting many work-piece and precise surveying are needed in the wear experiment, so the whole experiment is complex. This article analyzed the wear mechanism and found the main reason of affect the electrode wire wear by using the ANSYS software to do the temperature field simulation. The simulation parameters and simulation results were verified through experiments. The experiment showed that appropriate ratio of peak current and pulse width and the slow current rise slope can reduce the electrode wire wear significantly.

Sunlight-Activated Phase Change Materials for Controlled Heat Storage and Triggered Release

2021 ◽  
Author(s):  
Yuran Shi ◽  
Mihael Gerkman ◽  
Qianfeng Qiu ◽  
Shuren Zhang ◽  
Grace G. D. Han
Keyword(s):  
Phase Transition ◽  
Solar Radiation ◽  
Phase Change ◽  
Latent Heat ◽  
Photon Energy ◽  
Organic Phase ◽  
Phase Change Materials ◽  
Heat Storage ◽  
Triggered Release

We report the design of photo-responsive organic phase change materials that can absorb filtered solar radiation to store both latent heat and photon energy via simultaneous phase transition and photo-isomerization....

scholarly journals Study on the Temperature Field of Casting Process in ANSYS

2011 ◽  
Vol 2-3 ◽  
pp. 856-860
Author(s):  
Chang Li ◽  
Guang Bing Zhao ◽  
Shu Yu Zhang ◽  
Xing Han
Keyword(s):  
Temperature Field ◽  
Casting Process ◽  
Interface Temperature ◽  
Field Change ◽  
Ansys Software ◽  
Heat Process ◽  
Manufacture Process ◽  
Composite Interface ◽  
Non Linear ◽  
Changing Process

Cast molding is the main manufacture process in foundry, because the most disfigurements occurs in this step, while the foundry itself is a complex non-linear instantaneous transferring heat process, in which it should take the absorbing and releasing potential heat into account. In this paper, it simulates the temperature field changing process of the cast solidification in ANSYS software, gets the temperature field change rule for a typical cast, and analyzed the effect of different foundry technics parameters on composite interface temperature, which will provide numerical bases for optimizing foundry technics parameters in future.

Investigation of the Constitutive Modle of Saturated Frozen Soil Based on Damage

2013 ◽  
Vol 353-356 ◽  
pp. 221-224
Author(s):  
Shuang Zhang ◽  
Chun An Tang ◽  
Lei Li ◽  
Shuai Li
Keyword(s):  
Phase Transition ◽  
Temperature Field ◽  
Stress Field ◽  
Constitutive Model ◽  
Internal Structure ◽  
Damage Mechanics ◽  
Frozen Soil ◽  
Unfrozen Water ◽  
Freezing And Thawing ◽  
Water Field

Saturated frozen soil is composed of soil, unfrozen water and ice, whose subgrade deformation is due to the weakened of internal structure which coursed by damage of the materials in the process of the cycle of freezing and thawing. Considing of the heterogeneity of saturated frozen soil and the phase transition between water and ice, and using of the damage mechanics theory, thermodynamics theory, filtration mechanics theory, a constitutive model of saturated frozen soil is setted up, which is of the coupfing problem of temperature field, water field and stress field. The rationality and validity of the model is verified by the experiment. It is also provided a new method for the study of frozen soil.

scholarly journals Determination of latent heat at the finite temperature phase transition of SU(3) gauge theory

2017 ◽  
Author(s):  
Shinji Ejiri ◽  
Ryo Iwami ◽  
Mizuki Shirogane ◽  
Naoki Wakabayashi ◽  
Kazuyuki Kanaya ◽  
...  
Keyword(s):  
Phase Transition ◽  
Gauge Theory ◽  
Latent Heat ◽  
Finite Temperature ◽  
Temperature Phase ◽  
Temperature Phase Transition

Temperature Field Simulation of Anode Erosion in Electric Discharge Machining

2010 ◽  
Vol 455 ◽  
pp. 345-349
Author(s):  
B.C. Xie ◽  
Zhen Long Wang ◽  
Yu Kui Wang ◽  
Jing Zhi Cui
Keyword(s):  
Temperature Field ◽  
Electric Discharge ◽  
Material Removal ◽  
Machining Process ◽  
Model Parameters ◽  
Temperature Dependent ◽  
Electric Discharge Machining ◽  
Field Simulation ◽  
Simulation And Experiment ◽  
Anode Erosion

In this paper, a thermo-physical model of the electric discharge machining process using finite element method is presented. In this model, parameters such as convection, the latent heat and the thermal properties based on temperature dependent etc. are studied to predict the temperature distribution in the workpiece. The temperature field simulation and experiment were carried out by adopting parameters through optimum pulse curve, and amending the effects of recast layer, the simulation results amended shows a better agreement with experimental results, indicating a theoretical foundation for mechanism of material removal in EDM machining.

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