Fast Computation of Microscale Temperature Distribution in LSI Chips

2003 ◽  
Author(s):  
Shigeki Hirasawa ◽  
Satoru Isomura
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Temperature Distribution ◽  
Silicon On Insulator ◽  
Fast Computation ◽  
The Finite Element Method ◽  
Fast Calculation ◽  
Temperature Distributions ◽  
Network Method ◽  
Practical Tool

A network method for quickly calculating the temperature distributions in an LSI chip with silicon-on-insulator (SOI) transistors and multi-layered lines has been developed. Its calculation time is less than 1/1000 of that of the finite element method, and its error is within 15%. The developed fast calculation method can be used in the case of more than 300 heating devices and more than 1000 lines in an LSI chip. It is thus a practical tool for designing the optimum layout of devices to prevent local temperature increases in an LSI chip.

An Influence of Frictional Model on Temperature Distribution during a Friction Spot Stir Welding Process of Titanium Grade 2

2016 ◽  
Vol 687 ◽  
pp. 155-162
Author(s):  
Piotr Lacki ◽  
Zygmunt Kucharczyk ◽  
Tomasz Walasek
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Friction Stir Welding ◽  
Temperature Distribution ◽  
Welding Process ◽  
Relative Speed ◽  
The Finite Element Method ◽  
Friction Stir ◽  
Temperature Distributions ◽  
Titanium Grade

In the paper, the influence of friction on temperature distribution in the friction spot stir welding process of titanium grade 2 is analysed. It is assumed that the friction coefficient may be a function of temperature or the relative speed of the contact areas. The finite element method is used in the numerical calculations. Temperature distributions and temperature versus time for the analysed friction coefficients are presented. The results also show that applying a proper frictional model is very essential for the sake of heat generation during friction stir welding.

scholarly journals Assessing Structural Damage after a Severe Wildfire: A Case Study

Buildings ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 171
Author(s):  
Angeliki Papalou ◽  
Dimitrios K. Baros
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Temperature Distribution ◽  
Structural Damage ◽  
Extreme Heat ◽  
The Finite Element Method ◽  
Residential Areas ◽  
Severe Damage ◽  
Construction Type

Wildfires have always been a threat to forests and areas of high combustible vegetation. When they are not kept under control, they can spread to residential areas, creating severe damage and destruction. This paper examines the effects of the extreme heat conditions that developed during a wildfire on buildings as a function of their construction type. One of the deadliest wildfires in Greece (July 2018) is considered as a case study, and the damage that occurred to buildings during this event is presented. The temperature of the various structural subsystems in extreme heat conditions was estimated using the finite element method. Parameters that influenced the corresponding temperature distribution were identified. Simple guidelines are given to prevent or reduce damage in buildings exposed to wildfires.

scholarly journals 3D field analysis in 3-phase amorphous modular transformer under increased frequency operation

2015 ◽  
Vol 64 (1) ◽  
pp. 119-127 ◽  
Author(s):  
Bronisław Tomczuk ◽  
Dariusz Koteras
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Temperature Distribution ◽  
Power System ◽  
Infrared Camera ◽  
Field Analysis ◽  
The Finite Element Method ◽  
Core Surface ◽  
Calculated Temperature ◽  
The Core

Abstract The calculations results of the temperature distribution in a 3-phase transformer with modular amorphous core are presented. They were performed for two frequency values which were higher than the power system one. For the 3D field analyses the Finite Element Method (FEM) was used. The calculated temperature at the points of the core surface has been verified using an infrared camera.

Temperature Distribution and Thermal Stress Analysis of Ball-Tank Subjected to Solar Radiation

2005 ◽  
Vol 127 (2) ◽  
pp. 119-122 ◽  
Author(s):  
Vishnu Verma ◽  
A. K. Ghosh ◽  
H. S. Kushwaha
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Thermal Stress ◽  
Temperature Distribution ◽  
Solar Radiation ◽  
Ambient Temperature ◽  
Research Reactor ◽  
The Finite Element Method ◽  
Large Structure ◽  
Seasonal And Diurnal Variation

The ball tank of the research reactor CIRUS is exposed to solar radiation. The ambient temperature undergoes seasonal and diurnal variation. The resulting thermal stress could be significant for the large structure. The temperature distribution has been obtained by the finite element method. The paper presents temperature distribution and the resulting thermal stress.

Temperature Distributions and Thermal Distortions of Brake Drums

1977 ◽  
Vol 191 (1) ◽  
pp. 169-176 ◽  
Author(s):  
R. J. Ashworth ◽  
M. El-Sherbiny ◽  
T. P. Newcomb
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Transient Temperature ◽  
Thermal Distortion ◽  
The Finite Element Method ◽  
Convective Cooling ◽  
Temperature Distributions ◽  
Manufacturing Tolerances ◽  
Complete Contact ◽  
Element Method

This paper presents calculated results of transient temperature distributions and the resulting drum distortions when band contact occurs between the rubbing surfaces during operation of a brake. The finite element method is used to compute the thermal distortion in drums when incomplete contact arising from previous distortion, manufacturing tolerances or shoe misalignment occurs. The results are compared with those obtained when there is complete contact between lining and drum. Both single and repeated brake applications made at regular intervals with convective cooling are considered.

Numerical Analysis Method for Temperature Distribution in Cylindrical Steel during Quenching Process

2006 ◽  
Vol 118 ◽  
pp. 355-362
Author(s):  
Michiaki Fukuya ◽  
Toshio Terasaki ◽  
Kouki Hasegawa ◽  
Takanori Kitamura
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Temperature Distribution ◽  
Numerical Analysis ◽  
Thermal Cycle ◽  
Minimum Time ◽  
The Finite Element Method ◽  
Minimum Element ◽  
Time Increment ◽  
Quenching Process

The technics for predicting thermal cycle of a quenching by using the finite element method have been studied by comparing theoretical values with numerical analysis results. The basic equation of a minimum element length for cylinder thermal cycle was proposed, which was able to calculate from informations such as an initial temperature, a radius of cylinder, a heat transfer coefficient and the aimed temperature change at the cylinder surface. The minimum time increment for guaranteeing accuracy was given corresponding to the minimum element length. It was shown that the minimum element length for pipe thermal cycle was replaced by that of cylinder. Temperature distribution in cylinder during quenching process can be sufficiently predicted by the finite element method with the above, mentioned minimum element length and the minimum time increment.

Sign in / Sign up

Export Citation Format

Share Document