Prediction of machining chatter based on FEM simulation of chip formation under dynamic conditions

Mahnama, Maryam; Movahhedy, Mohammad R.

doi:10.1016/j.ijmachtools.2010.03.009

Cited by 42 publications

(15 citation statements)

References 27 publications

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“…For instance, in Mahdavinejad (2005) the workpiece instability in metal tuning was investigated; in Mahnama et al (2010 and) the effect of chip formation was taken into account inside the simulation models. Furthermore, FEs can also be utilized for the optimization of production plants, as in Myers et al (2003) where the structural dynamics of a whole vertical milling machine was improved, or some specific parts as in Assefa (2013) and Okubo and Yoshida (1982), where a modal analysis was focused on the machine tool column.…”

Section: Introductionmentioning

confidence: 99%

Harmonic Analysis and Dynamical Response Optimization in Ceramic Tile Finishing

Pavlović¹,

Minak²,

Lucisano³

et al. 2017

JSSCM

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This paper investigates the dynamic response of a large production machine used for surface finishing of oversized ceramic tiles through tool machining. In particular, the study aims at improving this phase of the industrial process, as well as the overall quality of the final products. As the finite element method has become an essential solution technique in many areas of engineering related to dynamic processes, the FEM is utilized in the optimization of machine basement for ceramic tile finishing. Two different basements of cutting machine have been considered as alternative design solutions. The responses in frequency and phase have been observed and compared. Stresses and strains have been also considered for comparison. This numerical computation permitted to select a convenient design option for the basement.

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Section: Introductionmentioning

confidence: 99%

Harmonic Analysis and Dynamical Response Optimization in Ceramic Tile Finishing

Pavlović¹,

Minak²,

Lucisano³

et al. 2017

JSSCM

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show abstract

“…Although the significant power offered by simulation codes considering that the vibration modes quickly increase in complexity together with the geometrical complexity, in the case of continuous systems it is a common practice to limit the modal investigation to a little number of significant frequencies, as mentioned in Mahnama (2010 and2012), Nance (2002), Negahban (2014) and Mourtzia (2014).…”

Section: Introductionmentioning

confidence: 99%

Modal analysis and stiffness optimization: The case of ceramic tile finishing

Pavlović¹,

Fragassa²,

Ubertini³

et al. 2016

J Serb Soc Comp Mech

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Considering the customers' demand for high quality products, surface finishing represents an extremely delicate phase in the production of ceramic tiles. In these terms, stiffer machinery can be considered a practical response to the need of accurate manufacturing processes. This research is focused on investigating and improving the (elasto)dynamic behaviour of a large machine tool, used for polishing and lapping ceramic tiles. A modal analysis was realized comparing natural frequencies in respect to different design solutions. The stiffness optimization was obtained by changing the structural design.

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“…Taking this approach, Buchkremer [5] found that the stress state at the location of chip breakage mainly develops during the chip bending phase and that 3D geometric features of a chip, such as the helical radius and helical pitch, affect the triaxiality distribution. Mahnama [6] presented a novel approach based on the J-C constitutive model of AISI 1045 (170 HB) for the prediction of chatter vibration and analyzed the process of chip formation with chatter vibration. Taking this approach, Mahnama [6] found that the stability decreases with an increase in width of the cut, and that, during the process of chatter vibration, the shear plane angle decreases when a thicker chip section converts to a thinner chip section.…”

Section: Introductionmentioning

confidence: 99%