Temperature Distribution Simulation, Prediction and Sensitivity Analysis of Orthogonal Cutting of Cortical Bone

2021 ◽  
pp. 095441192110498
Author(s):  
Quanwei Wang ◽  
Heqiang Tian ◽  
Xiaoqing Dang ◽  
Jingbo Pan ◽  
Yu Gao ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Cortical Bone ◽  
Orthogonal Cutting ◽  
Cutting Temperature ◽  
Cutting Parameters ◽  
Maximum Temperature ◽  
Model Parameters ◽  
Feed Speed ◽  
Milling Temperature ◽  
Cutting Model

Bone cutting plays an important role in spine surgical operations. The power devices with high speed employing in bone cutting usually leads to high cutting temperature of the bone tissue. This high temperature control is important in improving cutting surface quality and optimizing the cutting parameters. In this paper, the bone-cutting model was appropriately simplified for finite element (FE) based modeling of 2D orthogonal cutting to discuss the change law of cutting temperature of cortical bones for cervical vertebra, and to study the orthogonal cutting mechanism of the anisotropic cortical bone, a 3D FE simulation model had been also established in which longitudinal, vertical, and transversal cutting types were accomplished to investigate the effect of osteons orientation. Secondly, this response surface method was used to regress the simulation results, and establishes the prediction model of maximum temperature on cutting depth, cutting speed, and feed speed. Then, the Sobol method was used to analyze the sensitivity of the milling temperature prediction mathematical model parameters, in order to clarify and quantitatively analyze the influence of input milling parameters on the output milling temperature. Finally, the cutting temperatures obtained with the simulations were compared with the corresponding experimental results obtained from the bone milling tests. This study verifies the influence of key variables and the cutting parameters on thermo mechanical behavior of the bone cutting. The obtained cutting temperature distribution for the bone surfaces could be employed to establish a theoretical foundation for research on thermal damage control of bone tissues.

Effect of Minimum Quantity Lubrication to Prediction of Cutting Temperature Distribution in Turning Material AISI-1045

2020 ◽  
Vol 902 ◽  
pp. 97-102
Author(s):  
Tran Trong Quyet ◽  
Pham Tuan Nghia ◽  
Nguyen Thanh Toan ◽  
Tran Duc Trong ◽  
Luong Hong Sam ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Shear Zone ◽  
Orthogonal Cutting ◽  
Cutting Temperature ◽  
Chip Thickness ◽  
Minimum Quantity Lubrication ◽  
Minimum Quantity ◽  
The Difference ◽  
Secondary Shear Zone ◽  
Cutting Model

This paper presents a prediction of cutting temperature in turning process, using a continuous cutting model of Johnson-Cook (J-C). An method to predict the temperature distribution in orthogonal cutting is based on the constituent model of various material and the mechanics of their cutting process. In this method, the average temperature at the primary shear zone (PSZ) and the secondary shear zone (SSZ) were determined for various materials, based on a constitutive model and a chip-formation model using measurements of cutting force and chip thicknes. The J-C model constants were taken from Hopkinson pressure bar tests. Cutting conditions, cutting forces and chip thickness were used to predict shear stress. Experimental cutting heat results with the same cutting parameters using the minimum lubrication method (MQL) were recorded through the Testo-871 thermal camera. The thermal distribution results between the two methods has a difference in value, as well as distribution. From the difference, we have analyzed some of the causes, finding the effect of the minimum quantity lubrication parameters on the difference.

High-Speed Cutting Machining Simulation of Aero Engine Casing Hole

2014 ◽  
Vol 915-916 ◽  
pp. 1014-1017 ◽  
Author(s):  
Ting Jian Dong ◽  
Jin Chen ◽  
Hua Peng Ding
Keyword(s):  
High Speed ◽  
Metal Cutting ◽  
Orthogonal Cutting ◽  
Cutting Temperature ◽  
Cutting Parameters ◽  
Contact Friction ◽  
Physical Factors ◽  
High Speed Cutting ◽  
Aero Engine ◽  
Cutting Model

For the high-speed machining aero engine casing hole, according to the principle of metal forming and the characteristic of metal cutting plane strain, with selecting some key physical factors of the cutter - chip contact friction and abrasion model, the Cartesian orthogonal cutting model of aero engine casing hole was established by using the Deform, a sort of finite element analysis software. With taking cutting temperature for preferred aim of the cutting parameters, select the appropriate cutting parameters, the aim of aero-engine casing high-speed (cutting speed up to 700m/min) cutting has been achieved by simulation, and the feasibility of the cutting process was researched and confirmed in theoretically by analyzing the cutting force, cutting temperature and tool wear condition.

Study on the Influence of Anisotropy on Cutting Performance of Aviation Aluminium Alloy 7050-T7451

2020 ◽  
Vol 990 ◽  
pp. 29-35
Author(s):  
Hui Wang ◽  
Ying Meng ◽  
Duo Duo Li ◽  
Xiu Li Fu ◽  
Qi Hang Shi
Keyword(s):  
Aluminium Alloy ◽  
Orthogonal Cutting ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Cutting Performance ◽  
Rolled Sheet ◽  
Feed Speed ◽  
Aluminium Alloy 7050 ◽  
Degree Of Anisotropy ◽  
Forming Angle

Based on the hypocycloid theory, a highspeed orthogonal cutting simulation model was established. The cutting parameters (cutting speed, feed rate) and plane forming angle of the workpiece of aeronautical aluminium alloy 7050-T7451 pre-stretched rolled sheet were simulated and validated. The mapping relationship between cutting parameters, anisotropy and cutting performance was analyzed. The results show that the degree of anisotropy and the difficulty of material cutting are proportional to the forming angle, and the anisotropy decreases with the increase of cutting speed and the decrease of feed speed. Finally, the optimal cutting process range of aluminum alloy 7050-T7451 was obtained, which provides data support for highspeed cutting of anisotropic materials.

Temperature Field Numerical Analysis of Machining Process Based on the Finite Element Analysis

2014 ◽  
Vol 621 ◽  
pp. 611-616 ◽  
Author(s):  
Yan Juan Hu ◽  
Yao Wang ◽  
Zhan Li Wang
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Metal Cutting ◽  
Orthogonal Cutting ◽  
Cutting Temperature ◽  
Cutting Parameters ◽  
Element Model ◽  
Machining Process ◽  
Element Analysis ◽  
Mechanical Coupling

In order to study the temperature field distribution in the process of machining, the finite element theory was used to establish the orthogonal cutting finite element model, and the key technologies were discussed simultaneously. By using ABAQUS software for cutting AISI1045 steel temperature field of numerical simulation, the conclusion about changing rule of cutting temperature field can be gotten. The results show that this method can efficiently simulate the distribution of temperature field of the workpiece, cutter and scraps, which is effected by thermo-mechanical coupling in metal work process. It provides the theory evidence for the intensive study of metal-cutting principle, optimizing cutting parameters and improving processing technic and so on.

Analysis on the Temperature Rise Produced by Plastic Deformation Heat for Nanoscale Orthogonal Cutting of Copper Workpiece

2012 ◽  
Author(s):  
Zone-Ching Lin ◽  
Ying-Chih Hsu ◽  
Liang-Kuang Chen
Keyword(s):  
Plastic Deformation ◽  
Temperature Distribution ◽  
Temperature Rise ◽  
Calculation Method ◽  
Orthogonal Cutting ◽  
Equivalent Stress ◽  
Equivalent Strain ◽  
Perfect Crystal ◽  
Molecular Statics ◽  
Cutting Model

The quasi-steady molecular statics nanoscale orthogonal cutting model developed by this paper not only can calculate cutting force, equivalent stress and equivalent strain, but also can calculate the temperature rise of the cut perfect crystal copper workpiece. This paper considers that during nanoscale orthogonal cutting, the temperature rise of the cut perfect crystal copper workpiece is produced by plastic deformation heat only. The calculation method of equivalent stress and equivalent strain uses three-dimensional quasi-steady molecular statics nanocutting model to calculate and simulate the phenomenon. The model for plastic deformation heat developed by this paper can be used to calculate the equivalent stress and equivalent strain of the cut copper workpiece. Furthermore, the calculation method of temperature rise of the cut workpiece produced by plastic deformation heat is developed. Afterwards the analysis of temperature distribution is also conducted. And the obtained temperature distribution of the cut copper workpiece computed by this paper is qualitatively compared with the temperature distribution obtained by molecular dynamics method in the reference.

Experimental Tool Temperature Distributions in Oblique and Orthogonal Cutting Using Chip Breaker Geometry Inserts

2005 ◽  
Vol 128 (2) ◽  
pp. 606-610 ◽  
Author(s):  
Rachid M’Saoubi ◽  
Hariharan Chandrasekaran
Keyword(s):  
Removal Rate ◽  
Orthogonal Cutting ◽  
Cutting Speed ◽  
Local Maximum ◽  
Cutting Parameters ◽  
Maximum Temperature ◽  
Tool Temperature ◽  
Chip Breaker ◽  
Suitable Combination ◽  
Lower Tool

Cutting tool temperature distribution was mapped using the infrared-charge-coupled device technique during machining of carbon steel SS2511 (∼AISI 3115) and stainless steel AISI 316L under oblique cutting conditions with chip breaker geometry inserts. Results indicated that the temperature on the rake surface was not uniform. Local maximum temperature points are present on the tool face at different locations, i.e., land, groove, backwall, and at the end of tool chip contact. Further investigation of the effect of cutting parameters on the tool temperature indicated that a suitable combination of cutting speed and feed resulted in a lower tool temperature for conditions of comparable material removal rate.

Effect of High-Temperature Alloy Cutting Speed on Tool Wear

2014 ◽  
Vol 800-801 ◽  
pp. 124-128
Author(s):  
Yu Wang ◽  
Yi Wen Wang ◽  
Zhong Yang Zhao ◽  
Ye Cai
Keyword(s):  
High Temperature ◽  
Tool Wear ◽  
Three Dimensional ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
High Temperature Alloy ◽  
Software Applications ◽  
3D Software ◽  
Cutting Model

High-temperature alloy is an important material in making critical aerospace engine parts, it is also used in weapons industry, energy, chemical, power, etc. In this article, DEFORM-3D software applications to establish a three-dimensional cutting model of high-temperature alloy GH4169. Combined with cutting experiment analysis the characteristics of the tool wear and cutting temperature by change cutting speeds, and optimized cutting parameters combined with experimental on tool wear.

The Simulation Analysis of Friction Effect on Cutting Process

2011 ◽  
Vol 314-316 ◽  
pp. 1065-1068
Author(s):  
Shu Jun Li ◽  
Xiao Hang Wan ◽  
Zhao Wei Dong ◽  
Yuan Yuan
Keyword(s):  
Friction Coefficient ◽  
Coulomb Friction ◽  
Simulation Analysis ◽  
Orthogonal Cutting ◽  
Cutting Temperature ◽  
Fem Analysis ◽  
Cutting Process ◽  
Machined Surface ◽  
System Description ◽  
Cutting Model

Adopted the Lagrange quality point coordinate system description method used the FEM analysis software, the reasonable two-dimension heat-mechanic coupling orthogonal cutting model is established in this paper, which uses the ameliorated Coulomb friction theory to simulate the friction status between the chips and tools. This paper simulates the cutting process with different friction coefficient. It can draw conclusions that the cutting forces and the residual stresses of machined surface are increasing with the raising of touching length of rake face and chip, the raising of cutting temperature. The friction coefficient has the important effect on the machining quality.

Finite Element Simulation of Orthogonal Cutting of Nodular Cast Iron

2008 ◽  
Vol 392-394 ◽  
pp. 929-934
Author(s):  
Sheng Wen Zhang ◽  
Chan Yuan Gong ◽  
Xi Feng Fang ◽  
C.S. Zhu ◽  
W. Jia
Keyword(s):  
Cast Iron ◽  
Orthogonal Cutting ◽  
Cutting Temperature ◽  
Chip Morphology ◽  
Nodular Cast Iron ◽  
Cutting Parameters ◽  
Simulation Software ◽  
Cast Irons ◽  
Deform 2D ◽  
Optimization Of Cutting Parameters

Some key techniques such as material constitutive model, friction characteristics at tool-chip interface were discussed. And the constitutive equation for nodular cast iron 500-7 was established. Then the simulation software DEFORM-2D was used to simulate the orthogonal cutting process. Finally, the influences of cutting parameters and tool geometries on cutting forces, cutting temperature and chip morphology were analyzed. This study provides some academic support to the optimization of cutting parameters for nodular cast irons.

Experimental Research on Orthogonal Cutting and Oblique Cutting of Hardened Steel GCr15

2008 ◽  
Vol 375-376 ◽  
pp. 192-196 ◽  
Author(s):  
Yu Wang ◽  
Peng Wang ◽  
Hong Min Pen ◽  
Yu Fu Li ◽  
Xian Li Liu
Keyword(s):  
Inclination Angle ◽  
Cutting Forces ◽  
Orthogonal Cutting ◽  
Three Dimensional ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Shear Zones ◽  
Feed Speed ◽  
Oblique Cutting ◽  
Strain And Strain Rate

Experiment of hard cutting GCr15 with PCBN cutting tools, the influence of tool’s inclination angle and cutting parameters (cutting speed and feed speed) on cutting forces and cutting temperature are studied. A three-dimensional finite elements model using the commercial software Deform 3D 5.03 is developed. The friction between the tool and the chip is assumed to follow a modified Coulomb friction law and the adaptive remeshing technique is using for the formation of chip. The workpiece material property is a function of temperature, strain, and strain rate in the primary and secondary shear zones. Finite element method is used to simulate three-dimensional precision cutting, including orthogonal cutting and oblique cutting. The cutting forces and back forces are slightly changed by tool’s inclination angle. However, in high cutting speed, the cutting force decrease as the tool’s inclination angle increase, while the cutting temperature increase as the tool’s inclination angle increase. The simulation results are compared with experimentally measured data and found to be in good agreement to some extent.

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