A thermal-stress field calculation method based on the equivalent heat source for the dielectric fitting under discharging

2018 ◽  
Vol 138 ◽  
pp. 183-196 ◽  
Author(s):  
Fan Yang ◽  
Kai Liu ◽  
Shaohua Wang ◽  
Bing Gao ◽  
Shaogui Ai ◽  
...  
Keyword(s):  
Thermal Stress ◽  
Stress Field ◽  
Heat Source ◽  
Calculation Method ◽  
Field Calculation ◽  
Thermal Stress Field

Numerical Simulation of Thermal Stress Field of Arc-Shaped Thermal-Protection Component

2007 ◽  
Vol 353-358 ◽  
pp. 1110-1113
Author(s):  
De Sheng Lu ◽  
Yu Zhou ◽  
Bei Wang ◽  
Yu Jin Wang ◽  
Jia Hu Ouyang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Thermal Stress ◽  
Stress Field ◽  
Thermal Protection ◽  
Shape Design ◽  
Field Calculation ◽  
Thermal Stress Field ◽  
Finite Element Numerical Simulation ◽  
Initial Heating ◽  
Cluster Design

For the purpose of studying material cluster design and shape design of a certain arc-shaped thermal-protection component rationally, the ablation behavior and thermal stress distribution are studied by using the method of finite element numerical simulation. The study includes ablation tests, numerical simulation of temperature field, calculation of ablation thickness and numerical simulation of unsteady thermal stress field of the component. The simulation results are consistent with the results of ablation tests, which shows that the shape design of the arc-shaped thermal-protection component is rational and the dangerous periods of the component ablation are the time of initial heating and initial ablation boundary retreat.

Quasi-static thermal stresses due to a concentrated moving heat source in a thin plate

2016 ◽  
Vol 22 (2) ◽  
pp. 243-256
Author(s):  
Amir Reza Shahani ◽  
Samad Kalani
Keyword(s):  
Thermal Stress ◽  
Stress Field ◽  
Heat Source ◽  
Thin Plate ◽  
Thermal Stresses ◽  
Static Solution ◽  
Stress Distributions ◽  
Moving Heat Source ◽  
Displacement Potential ◽  
Thermal Stress Field

Temperature and thermal stress distributions in a two-dimensional infinite thin plate subjected to a moving heat source with variable power and velocity are obtained by solving quasi-static thermoelasticity equations analytically with the aid of a thermoelastic displacement potential. The results show good agreement with experimental data for a stationary source with constant power and with a steady-state analytical solution in the open literature. It is shown that the quasi-static solution can predict changes of the thermal stress field during the movement of the heat source, and can give the effect of changes of power and velocity of the heat source on the thermal stress field during its movement.

Thermal Stress Distribution Simulation Analysis for Disc Brake of Heavy Vehicles

2014 ◽  
Vol 941-944 ◽  
pp. 2495-2499
Author(s):  
Su Fang Ze
Keyword(s):  
Thermal Stress ◽  
Stress Field ◽  
Simulation Analysis ◽  
Three Dimensional ◽  
Calculation Model ◽  
Field Calculation ◽  
Transient Thermal Stress ◽  
Thermal Stress Field ◽  
Braking Process ◽  
Transient Thermal

Aiming at the phenomenon that a large amount of friction heat produced during braking process has important influence on the contact surface of heavy vehicle, according to the actual size of the friction plate and the static slice, a three-dimensional transient thermal stress field calculation model has established, using multi-physics coupled method of ANSYS in Workbench, after the numerical simulation of disk brake, the transient thermal stress field distribution has revealed in the process of braking friction piece, the results showed that the stress field and temperature field has a significant influence on each other, indicated that between them there is a clear relationship between the couple.

Numerical Simulation on Stress Field in Inside-Beam Laser Cladding

2014 ◽  
Vol 887-888 ◽  
pp. 1309-1312
Author(s):  
Ming Di Wang ◽  
Xiao Ling Hang ◽  
Kai Bo Guo ◽  
Shi Hong Shi ◽  
Lin Ning Sun
Keyword(s):  
Temperature Field ◽  
Thermal Stress ◽  
Stress Field ◽  
Heat Source ◽  
High Energy ◽  
Field Change ◽  
Change Over Time ◽  
Thermal Stress Field ◽  
Advanced Analysis ◽  
Over Time

In the process of deposition, the moving high energy heat source effect on the metal entity, and form the molten pool and the temperature field of directional conduction. Powder is accumulated in the substrate point by point, molten powder instantly solidify into a solid which is combined with substrate (or sediment) to reach metallurgical combination, from the perspective of the thermodynamic, the temperature field produced by coupling ring of heat source is regarded as a moving load to the base plate and the sedimentary section, and transient thermal stress field is generated, the load and boundary conditions (temperature field) of thermal stress field change over time, at the same time, the solution domain of thermal stress field change over time as a result. Therefore, through the life and death unit technology (ANSYS finite element analysis software of advanced analysis techniques) combined with the circulation order, the simulation of point to add deposition process is realized.

Effects of Scanning Patterns on the Thermal/Stress Field during Laser Solid Forming T-Shape Chord of Ti-6Al-4V Alloy

2014 ◽  
Vol 41 (7) ◽  
pp. 0703003
Author(s):  
姜亚琼 Jiang Yaqiong ◽  
林鑫 Lin Xin ◽  
马良 Ma Liang ◽  
谭华 Tan Hua ◽  
杨海欧 Yang Haiou ◽  
...  
Keyword(s):  
Thermal Stress ◽  
Stress Field ◽  
Laser Solid Forming ◽  
Thermal Stress Field

Calculation and Analysis of 2-D Thermal Stress Field in Induction Motor with Compound Cage Rotor under Different Load

2011 ◽  
Vol 117-119 ◽  
pp. 97-100
Author(s):  
Jun Ci Cao ◽  
Rong Chao Qian ◽  
Wei Li Li
Keyword(s):  
Finite Element ◽  
Thermal Stress ◽  
Stress Field ◽  
Induction Motor ◽  
Reference Value ◽  
Single Site ◽  
Compound Material ◽  
Thermal Stress Field ◽  
New Type ◽  
Cage Rotor

3kW two poles induction motor with compound cage rotor is illustrated in this paper, and 2-D thermal stress field of induction motor rotor is calculated and analyzed by finite element. Contrasting with common induction motor, induction motor with compound cage rotor has specific rotor shot shape and the bar is comprised of the upper compound material and the lower cast aluminium, which cause distribution of thermal stress is special. The motor with the rotor shot of compound material laid at single site is chosen to analyzing. The maximum thermal stress in the bar is calculated at different load, and the distribution of thermal stress in the bar is analyzed at rate load. The law of distribution of thermal stress in the bar has same reference value for designing new type of induction motor.

Investigation on Temperature Field and Thermal Stress of Dish Solar Concentrator’s Focal Region

2011 ◽  
Vol 148-149 ◽  
pp. 20-23
Author(s):  
Xing Zhi Wang ◽  
Yong Shuai ◽  
Fu Qiang Wang ◽  
Chun Liang Yu
Keyword(s):  
Temperature Field ◽  
Thermal Stress ◽  
Stress Field ◽  
Infrared Camera ◽  
Radiant Heat ◽  
Focal Region ◽  
Solar Concentrator ◽  
Flux Function ◽  
Thermal Stress Field ◽  
Good Accordance

Depending on the solar radiant flux and velocity measured in Harbin, with finite element method, use a modified radiant heat flux function to calculate the temperature field of a plate on the focal region of a dish solar concentrator. Compared the result with picture taken by infrared camera, there is a good accordance between them. The temperature field is used as the loading parameters to calculate the thickness’s impact on the thermal stress field in the plate. When the value of the thickness increases, the maximum values of the stress increase, but the overall stress field tend to decrease.

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