scholarly journals Numerical investigation of dimple-texturing on the turning performance of hardened AISI H-13 steel

2022 ◽  
Vol 13 ◽  
pp. 10
Author(s):  
Ganesan Vignesh ◽  
Debabrata Barik ◽  
Samraj Aravind ◽  
Ponnusamy Ragupathi ◽  
Munusamy Arun
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Tungsten Carbide ◽  
Thrust Force ◽  
Dimple Size ◽  
Element Analysis ◽  
Cutting Insert ◽  
Cutting Inserts ◽  
Micro Dimples ◽  
Micro Dimple

Forming micro-dimples nearer to the cutting edge on the rack face of the tungsten carbide cutting inserts will positively influence the machinability. However, it is challenging to machine the perfect micro-dimple dimensions by utilizing the available machining techniques. Finite element analysis can be an efficient way to observe the influence of dimple-texture area density, micro-dimple size, and various micro-dimple shapes on cutting inserts' machinability. This paper numerically analyses the impact of micro-dimple-textured cutting inserts in dry machining of AISI H-13 steel using AdvantEdge (virtual machining and finite element analysis software). Micro-dimples are formed on the rack face of tungsten carbide cutting inserts to observe the effect of dimple-textured cutting inserts on machinability compared to non-textured cutting inserts in terms of micro-dimple shape, micro-dimple size, and micro-dimple area density ratio. Their outcomes are analysed in terms of chip-insert contact length, main cutting force, and thrust force. It is observed that micro-dimple textured cutting inserts exhibit minimal main cutting force and thrust force in line with increasing the cutting insert life span. The abrasive wear was reduced in dimple-textured cutting inserts due to minimal contact between the cutting insert and chip developed compared to non-textured cutting inserts.

OPTIMIZATION OF THE FORCE CHARACTERISTIC OF ROTARY MOTION TYPE OF ELECTROMAGNETIC ACTUATOR BASED ON FINITE ELEMENT ANALYSIS

2016 ◽  
Vol 78 (9) ◽  
Author(s):  
Izzati Yusri ◽  
Mariam Md Ghazaly ◽  
Esmail Ali Ali Alandoli ◽  
Mohd Fua'ad Rahmat ◽  
Zulkeflee Abdullah ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Permanent Magnet ◽  
Permanent Magnets ◽  
Thrust Force ◽  
Rotary Motion ◽  
Electromagnetic Actuator ◽  
Element Analysis ◽  
Electromagnetic Actuators ◽  
Motion Type

This paper addresses a rotary motion type of electromagnetic actuator that compares two types of electromagnetic actuators; i.e the Permanent Magnet Switching Flux (PMSF) and the Switching Reluctance (SR) actuator. The Permanent Magnet Switching Flux (PMSF) actuator is the combination of permanent magnets (PM) and the Switching Reluctance (SR) actuator. The force optimizations are accomplished by manipulating the actuator parameters; i.e. (i) the poles ratio of the stator and rotor; (ii) the actuator’s size; (iii) the number of winding turns; and (iv) the air gap thickness between the stator and rotor through Finite Element Analysis Method (FEM) using the ANSYS Maxwell 3D software. The materials implemented in the actuator’s parameters optimizations are readily available materials, especially in Malaysia. The excitation current used in FEM analysis for both actuators was between 0A and 2A with interval of 0.25A. Based on the FEM analyses, the best result was achieved by the Permanent Magnet Switching Flux (PMSF) actuator. The PMSF actuator produced the largest magnetostatic thrust force (4.36kN) once the size is scaled up to 100% with the input current, 2A respectively. The maximum thrust force generated by the Switching Reluctance (SR) actuator was 168.85μN, which is significantly lower in compared to the results of the PMSF actuator. 

scholarly journals Two-Phase Linear Hybrid Reluctance Actuator with Low Detent Force

Energies ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 5162
Author(s):  
Jordi Garcia-Amorós ◽  
Marc Marín-Genescà ◽  
Pere Andrada ◽  
Eusebi Martínez-Piera
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Permanent Magnets ◽  
Thrust Force ◽  
Experimental Tests ◽  
Force Density ◽  
Two Phase ◽  
Element Analysis ◽  
Switched Reluctance ◽  
Detent Force

In this paper, a novel two-phase linear hybrid reluctance actuator with the double-sided segmented stator, made of laminated U cores, and an interior mover with permanent magnets is proposed. The permanent magnets are disposed of in a way that increases the thrust force of a double-sided linear switched reluctance actuator of the same size. To achieve this objective, each phase of the actuator is powered by a single H-bridge inverter. To reduce the detent force, the upper and the lower stator were shifted. Finite element analysis was used to demonstrate that the proposed actuator has a high force density with low detent force. In addition, a comparative study between the proposed linear hybrid reluctance actuator, linear switched reluctance, and linear permanent magnet actuators of the same size was performed. Finally, experimental tests carried out in a prototype confirmed the goals of the proposed actuator.

Comparison of Linear Switched Flux Permanent Magnet Machines

2013 ◽  
Vol 416-417 ◽  
pp. 121-126
Author(s):  
Y.J. Zhou ◽  
Z.Q. Zhu ◽  
Robert Nilssen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Permanent Magnet ◽  
Thrust Force ◽  
Permanent Magnet Machines ◽  
Two Dimensional ◽  
Element Analysis

This paper proposes a linear sandwiched switched flux permanent magnet (LSSFPM) machine and two double-sided linear switched flux permanent magnet (LSFPM) machines havingtoroidal windings. Bothmachines are optimized and then compared with the conventional 6-slot/5-pole LSFPM machine. It is found that the proposed machines exhibithigher magnet usage efficiencies than the conventional LSFPM machine, and the double-sided machines show shorter end-windings, which are benefited from toroidal windings. The performance, including back-EMF, cogging force and average thrust force, are analyzedby two-dimensional (2-D) finite element analysis (FEA).

Contact Mechanism of Tribological Coatings With Columnar Microstructure

2008 ◽  
Author(s):  
Young Sup Kang ◽  
Ryan D. Evans ◽  
Gary L. Doll
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Tungsten Carbide ◽  
Columnar Microstructure ◽  
Element Analysis ◽  
Contact Conditions ◽  
Fea Model ◽  
Tribological Coatings ◽  
Contact Mechanism

Tribological coatings for mechanical components such as bearings and gears can experience failure occurring at the surface for highly localized contact conditions. In the present study, a finite element analysis (FEA) model was developed to study the stress distribution and deformation of tungsten carbide reinforced amorphous hydrocarbon coatings with and without columnar microstructures under nanoindentation. Results show that the microstructure of these tribological coatings significantly influences the stress distribution and deformation under heavily loaded conditions.

scholarly journals Finite element analysis of the high-pressure tungsten carbide radius-anvil

2012 ◽  
Vol 61 (4) ◽  
pp. 040702
Author(s):  
Yu Ge ◽  
Han Qi-Gang ◽  
Li Ming-Zhe ◽  
Jia Xiao-Peng ◽  
Ma Hong-An ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
High Pressure ◽  
Tungsten Carbide ◽  
Element Analysis

scholarly journals 3D finite element analysis of Al7075-T6 drilling with coated solid tooling

2020 ◽  
Vol 318 ◽  
pp. 01038
Author(s):  
Anastasios Tzotzis ◽  
Angelos Markopoulos ◽  
Nikolaos Karkalos ◽  
Panagiotis Kyratsis
Keyword(s):  
Experimental Data ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Thrust Force ◽  
Numerical Data ◽  
Chip Morphology ◽  
Cutting Conditions ◽  
Element Analysis ◽  
3D Finite Element ◽  
3D Fea

Due to the fact that simulation of drilling was added in commercial finite element analysis (FEA) software only recently, 3D finite element modelling is an invaluable asset during related researches. The present study employs 3D FEA to model the drilling process of Al7075-T6 alloy with solid carbide tooling, investigates important phenomena that occur during drilling and finally compares the simulated results with experimental data. A number of simulations were performed with DEFORM3D™ software at different cutting conditions; cutting speed of 50m/min, 100m/min, 150m/min and feed of 0.15mm/rev, 0.20mm/rev, 0.25mm/rev. The proposed model takes into consideration certain aspects like damage initiation and evolution of the material, contact interface between the drill bit and the workpiece and standard boundary conditions. Eventually, the acquired numerical data for thrust force were compared to the experimental results for the same cutting conditions and parameters. To obtain the experimental data, a series of nine drilling tests were performed. Upon validation of the numerical data, the temperature distribution on the tool tip – workpiece interface, as well as the chip morphology (shape and curling radius) were determined. Results showed a good agreement between the numerical and the experimental data. Specifically, thrust force and chip morphology exhibited an agreement of about 95% and 90% respectively, which confirms the potential of 3D FEA implementation on machining investigations.

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