The Finite Element Simulation and Analysis of Thermal Stress Field of In-Service Tubular Electro-Thermal Component

2010 ◽  
Vol 171-172 ◽  
pp. 354-357
Author(s):  
Xiu Mei Zhang ◽  
Rui Ying Zhang ◽  
Quan Li

The tubular electro-thermal component will produce thermal stress when water in the tube is heated by electricity, which is one of important factors to cause the fracture. In this paper, the finite element simulation and theoretical analyzing methods are used to analyze the thermal stress field of the electro-thermal component tube with different substrates, i.e., quartz glass and borosilicate glass. The result shows that under the same condition, the highest temperature of electro-thermal component using borosilicate glass substrate is higher than that using quartz substrate. When in service, the inner surface of electro-thermal component endures tensile stress and the outer surface endures compressive stress. The inner surface produces greater thermal stress and therefore fracture is more likely to emerge on the inner surface. Therefore, in order to prevent forming of the fracture and reduce the thermal stress, compared with borosilicate glass, priority should be given to quartz glass as the material for manufacturing electro-thermal component.

2013 ◽  
Vol 469 ◽  
pp. 209-212
Author(s):  
Xin Guo ◽  
Hong Wei Ji ◽  
Hai You Zheng

Molded pulp pallet is a kind of new green material pallet which has a broad development prospects. In this paper, ABAQUS software was applied to simulate the situation that molded pulp pallet dropped from different heights in different ways. Stress field and displacement field of the pallet are obtained. Cushioning property and deformation of the molded pulp pallet were analyzed. The work of this paper could give a significant guide to design the molded pulp pallet.


2011 ◽  
Vol 117-119 ◽  
pp. 97-100
Author(s):  
Jun Ci Cao ◽  
Rong Chao Qian ◽  
Wei Li Li

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.


2013 ◽  
Vol 544 ◽  
pp. 339-342 ◽  
Author(s):  
Wei Hong Li ◽  
Cong Li ◽  
Yan Qiu

This article through to hollow photovoltaic glass service in the process of temperature test, by using the finite element simulation of the temperature change caused by the thermal stress, using the finite element simulation of the temperature change caused by the thermal stress. According to the heat conduction equation and boundary condition, derivation hollow photovoltaic through the finite element software to hollow photovoltaic glass plate thermal stress for numerical simulation and research. Adopted in structural analysis directly define temperature load method analysis force hollow photovoltaic glass thermal stress. Use the finite element software to hollow photovoltaic glass plate thermal stress for numerical simulation and research. For the known temperature field distribution situation, adopted in structural analysis directly define temperature load method analysis force hollow photovoltaic glass thermal stress. Through the finite element software ANSYS to calculate different unit was carried out and the numerical simulation, the results show that the analytical solution and the numerical solution has good goodness of fit. The proposed calculation formula for engineering design has the certain reference value.


2013 ◽  
Vol 444-445 ◽  
pp. 1422-1426
Author(s):  
Li Zi Chen ◽  
Chun Yuan Jing ◽  
Xiao Wei Guan

Based on the theory of the thermal conduction and the thermal elastic equations, does some researches in view of the thermal Damage of K9 glass by finite element analysis. The distribution of temperature field and thermal stress field of the ideal K9 glass which irradiated by 100W pulsed-Nd: YAG laser are simulated with finite element software. The result shows that the temperature of the surface of glass doesnt reach the melting and the thermal stress of it doesnt get to the requirement for fracture strength. Then, the model of K9 glass containing inclusions has be built. The simulation result indicates that inclusions may affect the distribution of temperature field and thermal stress field of the K9 glass, which makes the injected laser beams energy centralize on a small area around the inclusions owing to the existence of the strong absorbing, thus leading to K9 glass laser damage threshold reduction and easier to thermal damage.


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