scholarly journals DRUG BIT CUTTING TRACE IMAGE COLOURS AND CUTTING FORCE FLUCTUATION RELATION

2016 ◽  
Vol 4 (4) ◽  
pp. 297-297
Author(s):  
Mehmet Kemal GÖKAY ◽  
Arif Emre DURSUN
Keyword(s):  
Cutting Force ◽  
Force Fluctuation ◽  
Fluctuation Relation ◽  
Cutting Force Fluctuation

Numerical Simulation of Cutting Force and Temperature Field in High Speed Machining of Titanium Alloys

2010 ◽  
Vol 37-38 ◽  
pp. 731-734 ◽  
Author(s):  
Cong Ming Yan ◽  
You Xi Lin
Keyword(s):  
Finite Element ◽  
Cutting Force ◽  
Chip Formation ◽  
High Speed ◽  
Metal Cutting ◽  
Rake Angle ◽  
Maximum Temperature ◽  
High Speed Machining ◽  
Force Fluctuation ◽  
Cutting Force Fluctuation

Improvements in manufacturing technologies require better modeling and simulation of metal cutting processes. A fully thermal-mechanical coupled finite element analysis (FEA) was applied to model and simulate the high speed machining of TiAl6V4. The development of serrated chip formation during high speed machining was simulated. The effects of rake angle on chip morphology, cutting force and the evolution of the maximum temperature at the tool rake were analyzed with the finite element model. The simulation results show that the segmented chip formation results in cutting force fluctuation. Although the segmentation frequency of the chip increases with the increase of the rake angle, the degree of segmentation becomes weaker and the cutting force fluctuation amplitude decreases. The predicted temperature distribution during the cutting process is consistent with the experimental results given in a literature.

Germanium Crystal Anisotropy Affecting to Cutting Force in SPDT

2014 ◽  
Vol 887-888 ◽  
pp. 1232-1235
Author(s):  
Xiao Guang Xia ◽  
Yu Zhang ◽  
Qi Ming Xie
Keyword(s):  
Cutting Force ◽  
Crystallographic Orientation ◽  
Anisotropic Material ◽  
Crystal Plane ◽  
Germanium Crystal ◽  
Crystal Anisotropy ◽  
Force Fluctuation ◽  
Cutting Direction ◽  
Cutting Force Fluctuation ◽  
Material Cutting

Germanium is an anisotropic material. Cutting force varies with the change of crystallographic orientation and crystal plane in the process of turning. According to the effect of germanium crystal anisotropy in cutting force, fluctuation of theoretically calculated cutting force changing with crystallographic orientation and crystal plane and best cutting direction are presented.

Tool-path planning with constraint of cutting force fluctuation for curved surface machining

2018 ◽  
Vol 51 ◽  
pp. 614-624 ◽  
Author(s):  
Jian-wei Ma ◽  
De-ning Song ◽  
Zhen-yuan Jia ◽  
Guo-qing Hu ◽  
Wei-wei Su ◽  
...  
Keyword(s):  
Path Planning ◽  
Cutting Force ◽  
Tool Path ◽  
Curved Surface ◽  
Tool Path Planning ◽  
Surface Machining ◽  
Force Fluctuation ◽  
Cutting Force Fluctuation

scholarly journals Discrete Element Simulation of Conical Pick’s Coal Cutting Process under Different Cutting Parameters

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Jinxia Liu ◽  
Chao Ma ◽  
Qingliang Zeng ◽  
Kuidong Gao
Keyword(s):  
Angular Velocity ◽  
Cutting Force ◽  
Cutting Parameters ◽  
Discrete Element ◽  
Cutting Process ◽  
Conical Pick ◽  
Force Fluctuation ◽  
Installation Angle ◽  
Coal Cutting ◽  
Coal Particles

To explore how the cutting parameters affect the conical pick’s cutting force in coal cutting process, some simulation tests were carried with EDEM based on analysis of coal cutting process of conical pick and micro mechanical characteristic of coal particles. In this paper, traction speed, drum angular velocity, and installation angle of conical pick were considered as the main coal cutting parameters. The discrete element simulations were conducted under 7 sets of various cutting parameters, which were determined in the range of empirical parameters. From the results of the simulation tests, it can be concluded that the fragmentation of coal particles appears in a compacted, squeezed, and crumbling state in coal cutting process; the traction speed has the greatest impact on the conical pick’s cutting force and cutting force fluctuation and the influence of drum angular velocity and installation angle reduce in turn; the force and force fluctuation tend to decrease and obviously increase, respectively, with the increase of drum angular velocity and traction speed; and they will reach the minimum when the pick’s installation angle is 45° under certain traction speed and drum angular velocity.

Force–Fluctuation Relation of a Single DNA Molecule

2012 ◽  
Vol 45 (6) ◽  
pp. 2857-2862 ◽  
Author(s):  
Takeshi Baba ◽  
Takahiro Sakaue ◽  
Yoshihiro Murayama
Keyword(s):  
Dna Molecule ◽  
Force Fluctuation ◽  
Fluctuation Relation ◽  
Single Dna Molecule
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