Three-dimensional transient temperature field of brake shoe during hoist’s emergency braking

2009 ◽  
Vol 29 (5-6) ◽  
pp. 932-937 ◽  
Author(s):  
Zhen-cai Zhu ◽  
Yu-xing Peng ◽  
Zhi-yuan Shi ◽  
Guo-an Chen
Keyword(s):  
Temperature Field ◽  
Three Dimensional ◽  
Transient Temperature ◽  
Brake Shoe ◽  
Emergency Braking ◽  
Transient Temperature Field

Numerical Simulation of Three-Dimensional Molten Pool Temperature Field and Flow Field for Laser Melt Injection Based on Fluent

2012 ◽  
Vol 538-541 ◽  
pp. 1837-1842 ◽  
Author(s):  
Long Zhi Zhao ◽  
Zi Wang ◽  
Xin Yan Jiang ◽  
Jian Zhang ◽  
Ming Juan Zhao
Keyword(s):  
Temperature Field ◽  
Liquid Metal ◽  
Molten Pool ◽  
Metal Flow ◽  
Three Dimensional ◽  
Transient Temperature ◽  
Transient Temperature Field ◽  
Liquid Metal Flow ◽  
Fluent Software ◽  
Thermo Physical Properties

According to the characteristics of laser melt injection, a numerical model for a simplified 3D transient temperature field in molten pool was established using FLUENT software in this paper. In the model, many factors were considered such as liquid metal turbulence, latent heat of phase transformation and material thermo physical properties depending on temperature. The results show that the model can be developed well by FLUENT software. And the results also show that the driving force of the liquid metal flow mechanism.

Three-dimensional transient temperature field model for laser annealing

2005 ◽  
Vol 97 (3) ◽  
pp. 033520 ◽  
Author(s):  
Jean-Yves Degorce ◽  
Jean-Numa Gillet ◽  
François Magny ◽  
Michel Meunier
Keyword(s):  
Temperature Field ◽  
Laser Annealing ◽  
Field Model ◽  
Three Dimensional ◽  
Transient Temperature ◽  
Transient Temperature Field ◽  
Temperature Field Model

scholarly journals Research on Model Slice and Forming Method of Thin-walled Parts

2021 ◽  
Vol 233 ◽  
pp. 04046
Author(s):  
Changhao Zhang ◽  
Hu Li ◽  
Jianyu Yang ◽  
Huawei Lu ◽  
Peng Su
Keyword(s):  
Numerical Simulation ◽  
Temperature Field ◽  
Structural Characteristics ◽  
Three Dimensional ◽  
Simulation Method ◽  
Processing Parameters ◽  
Transient Temperature ◽  
Transient Temperature Field ◽  
Thin Walled ◽  
Experimental Processing

According to the structural characteristics of thin-walled parts, a model slicing method is proposed, and its mathematical process is established. The three-dimensional transient temperature field in the process of synchronous powder feeding laser cladding is studied and verified by numerical simulation method, and the thin-walled parts formed by later experimental processing are processed by the results of numerical simulation. Using the simulation results of temperature field as the basis for optimizing the processing parameters, the forming path of thin-walled parts is programmed and optimized, and the experimental verification shows the reliability of this method.

The Influence of Thermophysical Properties on a Numerical Model of Solidification

2002 ◽  
Author(s):  
Josef Stetina ◽  
Frantisek Kavicka ◽  
Bohumil Sekanina ◽  
Jaromir Heger
Keyword(s):  
Temperature Field ◽  
Numerical Model ◽  
Thermophysical Properties ◽  
Three Dimensional ◽  
Casting Process ◽  
Transient Temperature ◽  
Treatment Processes ◽  
Transient Temperature Field ◽  
Simultaneous Heating ◽  
Liquid States

Solidification and cooling of a (con)casting, with the simultaneous heating of the mold, is a case of transient spatial heat and mass transfer. This paper introduces an original and universal numerical model of solidification, cooling and heating, of a one-to-three-dimensional stationary and transient temperature field in a system comprising the casting, the mold and its surroundings. This model simulates both traditional as well as non-traditional technologies of casting conducted in foundries, metallurgical plants, forging operations, heat-treatment processes, etc. The casting process is influenced not only by the thermophysical properties (i.e. heat conductivity, the specific heat capacity and density in the solid and liquid states) of the metallic and non-metallic materials, but also by the precision with which the numerical simulation is conducted. Determining these properties is often more demanding than the actual calculation of the temperature field of the solidifying object. Since the influence of individual properties should be neither under- nor over-estimated, it is necessary to investigate them via a parametric study. It is also necessary to determine the order of these properties in terms of their importance.

Research of the Transient Temperature Field and Friction Properties on Disc Brakes

2013 ◽  
Vol 756-759 ◽  
pp. 4331-4335 ◽  
Author(s):  
Jian Zhang ◽  
Chang Gao Xia
Keyword(s):  
Temperature Field ◽  
Friction Factor ◽  
Three Dimensional ◽  
Transient Temperature ◽  
Brake Disc ◽  
Cyclic Symmetry ◽  
Transient Temperature Field ◽  
Disc Brakes ◽  
Result Show ◽  
Braking Process

According to the real dimension of the braking disc, the finite element modeling for three-dimensional transient cyclic symmetry during the long downhill braking is established. The distribution of the transient temperature field of the brake disc during the braking are analyzed. The variation of the friction factor combined with the temperature characteristics of the friction factor during the braking are analyzed. The analysis result show: During the braking, the temperature of the brake rises increasingly and reaches the top temperature of 316.04°C at the end of braking process, the high temperature section concentrates in the far area of the friction surface; The changes of the friction factor is relatively stable during the long downhill braking. There is no obvious thermal recession. (Abstract)

Simulated three-dimensional transient temperature field during aircraft braking for C/SiC composite brake disc

2011 ◽  
Vol 32 (5) ◽  
pp. 2590-2595 ◽  
Author(s):  
Chaoqun Zhang ◽  
Litong Zhang ◽  
Qingfeng Zeng ◽  
Shangwu Fan ◽  
Laifei Cheng
Keyword(s):  
Temperature Field ◽  
Three Dimensional ◽  
Transient Temperature ◽  
Brake Disc ◽  
Transient Temperature Field

Research on Transient Temperature of Concrete Surrounding Spiral Case and Temperature Effect on Gaps in a Hydropower Station

2010 ◽  
Vol 163-167 ◽  
pp. 1724-1727
Author(s):  
Xin Yong Xu ◽  
Zhen Yue Ma ◽  
Hong Zhan Zhang
Keyword(s):  
Temperature Field ◽  
Temperature Effect ◽  
Three Dimensional ◽  
Effect Of Temperature ◽  
Hydropower Station ◽  
Transient Temperature ◽  
Transient Temperature Field ◽  
Spiral Case ◽  
Steel Liner ◽  
Cooling Pipes

The transient temperature field and creep of concrete surrounding a spiral case are analyzed with a three-dimensional method, based on ABAQUS. The mechanism of hydration heat and cooling pipes on temperature is studied. The distribution of temperature with construction is given. The effect of temperature on gap between steel liner and concrete is researched. It is concluded that the influence of the measure parameters and temperature is indispensable.

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