Study on Key Factors in Piston Transient Temperature Field

2013 ◽  
Vol 779-780 ◽  
pp. 958-964
Author(s):  
You Liu ◽  
Jing Jing Liu ◽  
Xiao Chen
Keyword(s):  
Temperature Field ◽  
Boundary Conditions ◽  
Theoretical Foundation ◽  
Element Model ◽  
Test Point ◽  
Transient Temperature ◽  
Feature Points ◽  
Key Factors ◽  
Transient Temperature Field ◽  
Transient Numerical Simulation

By means of ANSYS, piston finite element model is constructed to attain transient numerical simulation and explore the characteristics of surface temperature. On the basis of experimental design, the correlation is analyzed between major boundary conditions and temperature of feature points, thus revealing the corresponding correlation of quantity. Transient calculation method is proved to be scientific and paves way to defining boundary conditions. And furthermore there forms a theoretical foundation for positioning test point in piston temperature field.

Analysis on the Temperature Field of Gear Form Grinding

2014 ◽  
Vol 633-634 ◽  
pp. 809-812
Author(s):  
Xiao Zhong Ren ◽  
Hai Feng Hu
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Element Model ◽  
Source Model ◽  
Helical Gear ◽  
Transient Temperature ◽  
Form Grinding ◽  
Transient Temperature Field ◽  
Study Results ◽  
Nonlinear Relation

Aiming at the issue on grinding burn of tooth face, the temperature field formed in helical gear form grinding was analyzed. The finite element model of the single tooth of helical gear was firstly established. Considering the nonlinear relation of the physical properties of gear material to temperature, 3D finite element simulation of transient temperature field was performed by using the rectangular moving heat source model. Finally, the temperature field distribution on tooth face was achieved. The study results show that the temperature is relative low when grinding starts, then the temperature increases rapidly, and the temperature reaches the maximum value at the end of grinding; the increase of grinding depth can result in the rise of temperature when other parameters are the constants.

Transient Temperature Distribution and Thermo-Mechanical Coupling Response of Paper in the Fusing Process of Laser Printers

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Pingping Liu ◽  
Huijie Zhang ◽  
Guang Wen ◽  
Fangjun Zuo ◽  
Meiwei Jia
Keyword(s):  
Temperature Field ◽  
Temperature Distribution ◽  
Boundary Conditions ◽  
Field Analysis ◽  
Laser Printer ◽  
Transient Temperature ◽  
Design Work ◽  
Bending Deformation ◽  
Paper Model ◽  
Transient Temperature Field

Abstract The hot-press fusing process of a laser printer is one of the principal causes for paper folding and bending deformation. In order to predict and control the deformation of paper, first, the following analysis method is proposed for the transient temperature field analysis of the continuous moving paper: discretizing the thermal analysis process, replacing the moving paper model with the moving heat source, and simulating the movement speed of paper by setting the flow boundary conditions. Second, taking the steady-state thermal calculation results of the printer in the standby mode as initial conditions, the temperature distribution characteristics of paper during the movement are obtained with the paper model placed in a whole-machine environment to analyze the transient temperature field. Third, using the method of multi-field coupling, the transient temperature field results of paper are taken as the external load of its static analysis to analyze the deformation of paper during the fusing process; therefore, the quantitative deformation results and deformation characteristics of paper after fusing are obtained. According to the results, more precise boundary conditions can be achieved by calculating the temperature field of paper in a whole-machine environment. The method of transient temperature field analysis for continuous moving objects proposed in this study can effectively simulate the movement process of paper. The results reveal the mechanism of paper wrinkle and bending deformation in the fusing process, which can be used to predict the conveying performance of paper and guide the design work of the printer.

Thermal Analysis of FSAE Racing Brake Disc Based on Algor

2013 ◽  
Vol 416-417 ◽  
pp. 1856-1860
Author(s):  
Shan Hu Yu ◽  
Jie Li ◽  
Nan Feng Zhang ◽  
Ming Lei Jiang ◽  
Ze Peng Liu ◽  
...  
Keyword(s):  
Temperature Field ◽  
Element Model ◽  
Transient Temperature ◽  
Brake Disc ◽  
Final Size ◽  
Friction Heat ◽  
Field Plate ◽  
University Of Technology ◽  
Transient Temperature Field ◽  
Temperature Field Model

The design of racing brake disc is one of the keys of the car braking system. The initial design of brake disc is based on the overall parameters and design requirements of South China University of Technology FSAE racing car. According to the mechanism of friction heat and friction heat distribution, a simple finite element model of temperature field model, boundary conditions and, using Algor to do a simulation of transient temperature field plate, the front and rear brake discs to determine the final size is analyzed.

scholarly journals Simulating Convective-Radiative Heat Sinks Effect by means of FEA-based Gaussian Heat Sources and Its Approximate Analytical Solutions for Semi-Infinite Body

2021 ◽  
Author(s):  
Ninh The Nguyen ◽  
John H Chujutalli
Keyword(s):  
Temperature Field ◽  
Heat Source ◽  
Analytical Solutions ◽  
Radiative Heat ◽  
Source Model ◽  
Heat Sinks ◽  
Transient Temperature ◽  
Measured Temperature ◽  
Heat Source Model ◽  
Transient Temperature Field

Abstract FEA-based Gaussian density heat source models were developed to study the effect of convective and radiative heat sinks on the transient temperature field predicted by the available approximate analytical solution of the purely conduction-based Goldak’s heat source. A new complex 3D Gaussian heat source model, incorporating all three modes of heat transfer, i.e., conduction, convection and radiation, has been developed as an extension of the Goldak heat source. Its approximate transient analytical solutions for this 3-D moving heat source were derived and numerically benchmarked with the available measured temperature & weld pool geometry data by Matlab programming with ~5 to 6 times faster than FEA-based simulation. The new complex 3D Gaussian heat source model and its approximate solution could significantly reduce the computing time in generating the transient temperature field and become an efficient alternative to extensive FEA-based simulations of heating sequences, where virtual optimisation of a melting heat source (i.e. used in welding, heating, cutting or other advanced manufacturing processes) is desirable for characterisation of material behaviour in microstructure evolution, melted pool, microhardness, residual stress and distortions.

Sign in / Sign up

Export Citation Format

Share Document