A Study of Explicit Numerical Simulations in Orthogonal Metal Cutting

Kaselouris, Evaggelos; Papadoulis, T.; Variantza, Elenh; Baroutsos, Andreas; Dimitriou, Vanda

doi:10.4028/www.scientific.net/ssp.261.339

Cited by 14 publications

(16 citation statements)

References 16 publications

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“…Rotary multi-cutter device manufactured by Wu et al was used to cut stainless steel wire ropes (2015). There are also many straight cutting tools (Kaselouris et al, 2017), and their shapes of these tools are different, such as polyhedron (Menezes et al, 2014), spherical (Maas et al, 2017), cylindrical (Lu et al, 2017). In addition, unused materials are stripped differently, for example, brushes are used to peel cassava tubers by Barati et al (2019), peeling rollers are used on citrus (Pan et al, 2015), and the principle of friction is also used in a kolanut peeling device (Kareem et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Retraction: Cutter design and multi-objective optimization of machine for cable peeling

Shi¹,

Zhu

Zhao³

et al. 2020

JAMDSM

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Cutter design and multi-objective optimization of machine for cable peeling is proposed to use mechanical peeling instead of manual peeling in this paper. First, the design of the machine for cable peeling includes executive mechanism, driving part for cable, driving part for executive mechanism, and peeling mechanism. Then, the cutting experiment platform is set up to verify the actual effect of cutting, and different cutting depths, cutting speeds and fixing cables methods are discussed by the cutting experiment platform. A numerical simulation method is proposed, and different cutting methods, cutting depths and cutting speeds for cutting different materials are discussed by simulation method. The results show that simultaneous cutting is better than sequential cutting. The results show a good agreement between the results obtained from the finite element modelling and experimental investigations. A theoretical reference is provided for subsequent structural improvement. Finally, multi-objective optimization of machine for cable peeling is realized. The aim of the optimization was improving the dimensional accuracy after cutting and reducing the deformation of the cut surface. Cutter thickness, cutter angle, and cutter material are used as optimization variables, and the final optimal solution is obtained. The cutter is manufactured according to the final optimal solution, experiment of cutting is performed, and good agreements were achieved between optimal solution and experiments. Comparing the final results with the initial results shows a significant improvement.

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Section: Introductionmentioning

confidence: 99%

Retraction: Cutter design and multi-objective optimization of machine for cable peeling

Shi¹,

Zhu

Zhao³

et al. 2020

JAMDSM

View full text Add to dashboard Cite

show abstract

“…A pseudo-3D [38] FE model is developed due to the need of saving computational time and focusing to the depth of the film-substrate. A hexahedral, 3D-solid eight-node element is adopted to carry out the transient analysis.…”

Section: Modeling and Simulationmentioning

confidence: 99%

Pump-probe reflectivity studies of ultrashort laser-induced acousto-mechanical strains in ZnO films

Kosma,

Kaleris,

Kaselouris

et al. 2023

Appl. Phys. A

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In the current work we report on the generation of acoustic strains in thin ZnO layers using optoacoustic transduction of ultrashort laser pulses into acoustic waves on an Au thin film transducer. After absorption of energy by the electron system of the metal, energy conversion, thermal expansion and mechanical deformation takes place. The generation and propagation of the induced acoustic strains are monitored in time via a degenerate pump-probe transient reflectivity optical setup at 800 nm, as opposed to most commonly used schemes that employ different wavelengths for the pump and probe beams, mostly in the vicinity of ZnO maximum absorption. The experimental results include energy relaxation times and phonon scattering frequencies and are supported by a thermal vibro-acoustic finite element model. The model is based on the combination of a revised two-temperature approach and elasticity theory, and considers anisotropic properties for the ZnO film and the computation of the elastic wave velocity for the first time. The outcomes are discussed in the context of electron–phonon coupling factors and other material properties. A good agreement between the experimental findings and the results from the numerical simulations has been established, regarding outcomes like the mean velocity of the strain waves, establishing a novel characterization method applicable to a variety of materials and structures.

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“…"Experimental investigation is time consuming and highly costly. Therefore, the use of prediction models and numerical methods [5] has gained popularity. Among this pool of prediction models is the Response Surface Methodology.…”

Section: Introductionmentioning

confidence: 99%

Statistical evaluation of PMMA surface roughness

Hweju

Kopi

Abou-El-Hossein

2022

J. Phys.: Conf. Ser.

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There is increased enthusiasm in polymer materials and yet limited research on single point diamond turning of Polymethyl methacrylate (PMMA) used to produce contact lenses. This study is a presentation of a statistical-based PMMA surface roughness prediction and parameter significance. The data utilized is obtained during dry single point diamond turning of PMMA. The experiment has been designed with the Central Composite Design (CCD) method and the Response Surface Methodology (RSM) has been used for surface roughness prediction and evaluation of cutting parameter importance. The surface roughness data used for regression model generation has been acquired manually using a profilometer. The resultant surface roughness (Ra) dataset has been split into training and testing datasets. The accuracy of the model has been determined based on the Mean Absolute Percentage Error (MAPE). Results have indicated that the generated regression model can predict surface roughness with 75.12 % accuracy. Furthermore, the order of parameter importance in decreasing order is as follows: feed rate, cutting speed, and depth of cut. The paired t-test results indicate that the difference between the averages of measured surface roughness and predicted surface roughness is not big enough to be statistically significant. Hence, the technique can be reliably utilized in predicting surface roughness during single point diamond turning of PMMA.

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A Study of Explicit Numerical Simulations in Orthogonal Metal Cutting

Cited by 14 publications

References 16 publications

Retraction: Cutter design and multi-objective optimization of machine for cable peeling

Retraction: Cutter design and multi-objective optimization of machine for cable peeling

Pump-probe reflectivity studies of ultrashort laser-induced acousto-mechanical strains in ZnO films

Statistical evaluation of PMMA surface roughness

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