scholarly journals Grinding temperature field prediction by meshless finite block method with double infinite element

2019 ◽  
Vol 153-154 ◽  
pp. 131-142 ◽  
Author(s):  
Zixuan Wang ◽  
Tianbiao Yu ◽  
Xuezhi Wang ◽  
Tianqi Zhang ◽  
Ji Zhao ◽  
...  
Keyword(s):  
Temperature Field ◽  
Grinding Temperature ◽  
Block Method ◽  
Infinite Element ◽  
Grinding Temperature Field ◽  
Temperature Field Prediction

Finite Element Analysis of Grinding Temperature Field for NMQL in Nickel-Base Alloy Grinding

2020 ◽  
pp. 102-131
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
High Efficiency ◽  
Base Alloy ◽  
Grinding Temperature ◽  
Element Analysis ◽  
Element Simulation ◽  
Step Algorithm ◽  
Nickel Base ◽  
Grinding Temperature Field

Temperature is not only an important parameter in machining, but also an important basis for process optimization. Accurate prediction and reasonable analysis of grinding temperature is of great and far-reaching significance to the development and promotion of nanofluid micro-lubrication. In this chapter, the mathematical model of finite element simulation of temperature field of high efficiency deep grinding under four kinds of cooling lubrication conditions is established, and the three boundary conditions and the constraints of simulation model are established, and the mesh division and time step algorithm are determined respectively. Using ABAQUS simulation platform and theoretical model to simulate grinding temperature field, the distribution characteristics of grinding temperature field under different working conditions are analyzed from different directions, different grinding depths, and different workpiece materials.

A Study on the Grinding Temperature Field for Titanium Alloy

2007 ◽  
Vol 339 ◽  
pp. 45-49
Author(s):  
W. Li ◽  
Tong Xing ◽  
Bao Xiang Qiu ◽  
Gang Xiang Hu ◽  
Yang Fu Jin
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Heat Source ◽  
Simulation Software ◽  
Transient Temperature ◽  
Fe Model ◽  
Grinding Temperature ◽  
Wet Grinding ◽  
Dry Grinding ◽  
Grinding Temperature Field

A reasonable finite element (FE) model of grinding temperature field has been developed on the basis of analysis of the transient temperature field， and three kinds of boundary conditions are loaded on the element of a moving heat source. The study, which is based on the finite element principle, has been carried out using the numerical simulation software ANSYS. Many results have been obtained including three dimensional temperature distribution map. The simulated results under different conditions show good agreement with the experimental results. With the comparison of the dry-grinding and wet-grinding, the result shows that the wet-grinding temperature with a proper grinding fluid is rather lower than the dry-grinding temperature. Finally, the variable coefficient of convective heat transfer and the different form heat source have been discussed in detail.

Exploration on Grinding Temperature Field Based on Water Vapor Cooling

2013 ◽  
Vol 820 ◽  
pp. 170-174
Author(s):  
Li Gang Zhao ◽  
Qing Ming Ding ◽  
Jia Long Ren
Keyword(s):  
Temperature Field ◽  
Water Vapor ◽  
Experimental Studies ◽  
Test Methods ◽  
Grinding Temperature ◽  
Machined Surface ◽  
Ansys Simulation ◽  
Dry Grinding ◽  
Grinding Temperature Field ◽  
Zone Temperature

To explore the influence of the water vapor cooling conditions on grinding temperature field of titanium alloy TC4 material, ANSYS simulation and test methods are adopted in this paper. Simulation and experimental studies show that: water vapor as coolant can reduce the surface temperature of the workpiece quickly by changing the wheel speed, workpiece speed and cutting depth; Water vapor cooling can control the grinding zone temperature below 400 °C on certain conditions, and compared with dry grinding it can reduce more than 50%; The grinding zone temperature can significantly be reduced by optimizing the grinding process parameters and improving the quality of the machined surface.

A Statistical Model of Equivalent Grinding Heat Source Based on Random Distributed Grains

2018 ◽  
Vol 140 (5) ◽  
Author(s):  
Zhenguo Nie ◽  
Gang Wang ◽  
Dehao Liu ◽  
Yiming (Kevin) Rong
Keyword(s):  
Temperature Field ◽  
Heat Source ◽  
Statistical Model ◽  
Fem Simulation ◽  
Source Model ◽  
Accurate Information ◽  
Grinding Temperature ◽  
Time Space ◽  
Creep Feed ◽  
Grinding Temperature Field

Accurate information about the evolution of the temperature field is a theoretical prerequisite for investigating grinding burn and optimizing the process parameters of grinding process. This paper proposed a new statistical model of equivalent grinding heat source with consideration of the random distribution of grains. Based on the definition of the Riemann integral, the summation limit of the discrete point heat sources was transformed into the integral of a continuous function. A finite element method (FEM) simulation was conducted to predict the grinding temperature field with the embedded net heat flux equation. The grinding temperature was measured with a specially designed in situ infrared system and was formulated by time–space processing. The reliability and correctness of the statistical heat source model were validated by both experimental temperature–time curves and the maximum grinding temperature, with a relative error of less than 20%. Finally, through the FEM-based inversed calculation, an empirical equation was proposed to describe the heat transfer coefficient (HTC) changes in the grinding contact zone for both conventional grinding and creep feed grinding.

Temperature Field and Thermal Residual Stress of Grinding GH4169 with Conventional Aluminum Oxide Wheel

2013 ◽  
Vol 589-590 ◽  
pp. 238-244
Author(s):  
Tao Wang ◽  
Guo Ding Chen
Keyword(s):  
Finite Element Method ◽  
Residual Stress ◽  
Finite Element ◽  
Temperature Field ◽  
Aluminum Oxide ◽  
Thermal Residual Stress ◽  
Grinding Temperature ◽  
Grinding Parameters ◽  
Grinding Temperature Field ◽  
Element Method

The constitutive relationship of GH4169 superalloy was investigated. The grinding thermal load acting on GH4169 workpiece in grinding process with conventional aluminum oxide wheel was determined by using the method combining finite element method (FEM) with experiment. The grinding temperature field and grinding thermal residual stress generated in GH4169 were calculated via finite element method (FEM). Finally, the relation between grinding parameters and grinding temperature field and that between grinding parameters and thermal residual stress were discussed.

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