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.

Laser-Induced Thermal Damage to K9 Glass on Finite Element Method

2013 ◽  
Vol 444-445 ◽  
pp. 1422-1426
Author(s):  
Li Zi Chen ◽  
Chun Yuan Jing ◽  
Xiao Wei Guan
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Thermal Stress ◽  
Stress Field ◽  
Thermal Damage ◽  
Laser Damage Threshold ◽  
Element Analysis ◽  
Finite Element Software ◽  
Thermal Stress Field ◽  
K9 Glass

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.

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
Keyword(s):  
Finite Element ◽  
Thermal Stress ◽  
Stress Field ◽  
Finite Element Simulation ◽  
Quartz Glass ◽  
Borosilicate Glass ◽  
Thermal Component ◽  
Element Simulation ◽  
Thermal Stress Field ◽  
Inner Surface

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.

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
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