Analysis of thermal temperature fields and thermal stress under steady temperature field of diesel engine piston

2017 ◽  
Vol 113 ◽  
pp. 796-812 ◽  
Author(s):  
Yaohui Lu ◽  
Xing Zhang ◽  
Penglin Xiang ◽  
Dawei Dong
Keyword(s):  
Temperature Field ◽  
Thermal Stress ◽  
Diesel Engine ◽  
Temperature Fields ◽  
Steady Temperature ◽  
Engine Piston ◽  
Steady Temperature Field

Method of Lines to Solve 2-D Steady Temperature Field of FGM

2007 ◽  
Vol 353-358 ◽  
pp. 2003-2006 ◽  
Author(s):  
Wei Tan ◽  
Chang Qing Sun ◽  
Chun Fang Xue ◽  
Yao Dai
Keyword(s):  
Thermal Conductivity ◽  
Temperature Field ◽  
Transfer Problem ◽  
Method Of Lines ◽  
Main Idea ◽  
Functionally Graded ◽  
Temperature Fields ◽  
Steady Temperature ◽  
Thermal Transfer ◽  
Steady Temperature Field

Method of Lines (MOLs) is introduced to solve 2-Dimension steady temperature field of functionally graded materials (FGMs). The main idea of the method is to semi–discretized the governing equation of thermal transfer problem into a system of ordinary differential equations (ODEs) defined on discrete lines by means of the finite difference method. The temperature field of FGM can be obtained by solving the ODEs with functions of thermal properties. As numerical examples, six kinds of material thermal conductivity functions, i.e. three kinds of polynomial functions, an exponent function, a logarithmic function, and a sine function are selected to simulate spatial thermal conductivity profile in FGMs respectively. The steady-state temperature fields of 2-D thermal transfer problem are analyzed by the MOLs. Numerical results show that different material thermal conductivity function has obvious different effect on the temperature field.

Study on the Simulation of Temperature Field of Diesel Engine

2014 ◽  
Vol 971-973 ◽  
pp. 752-754
Author(s):  
Ya Nan Wang
Keyword(s):  
Heat Transfer ◽  
Temperature Field ◽  
Steady State ◽  
Diesel Engine ◽  
Simulation Method ◽  
Engine Piston ◽  
Calculation Process

In the case of each parameter Pistons have been basically provided ,to simulate the temperature field of Diesel Engine Piston, detailing the analysis of diesel engine piston transient heat steady state and heat transfer transient of the calculation process, providing a general simulation method of temperature field in general diesel engine piston.

Three-Dimensional Finite Element Coupled Analysis of a Diesel Engine Piston

2014 ◽  
Vol 684 ◽  
pp. 347-353
Author(s):  
Qi Liu ◽  
Guang Yao Ouyang ◽  
Ping Zhang
Keyword(s):  
Finite Element ◽  
Thermal Stress ◽  
Diesel Engine ◽  
Stress Field ◽  
Cylinder Liner ◽  
Coupled Analysis ◽  
Stress Effect ◽  
Element Analysis ◽  
Engine Piston ◽  
Thermal Mechanism

The paper analyzed the temperature field and the thermal stress field of a diesel engine piston with finite element analysis software ANASYS, then used the thermal mechanism indirect coupled method, researched the coupled stress field of piston. The result indicated that the point of the highest temperature located on the middle of firebox which under the dangerous temperature of the material; under thermal stress effect, the max displacement of the piston did not exceed the clearance between piston and cylinder liner, but the non-roundness at the third ring reached 0.08mm, which had some influence on the pressurize and lubricate of piston; under thermal mechanism coupled effect, the point of max stress located on the interface of the seat of the pin and the pin hole, so as the top on the pin hole and inner on the seat of pin, so it was recommended to set rib between cervix and the seat of pin of piston to enhance the practical carrying capacity of the seat of the pin.

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