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

Pavlović, Ana; Fragassa, Cristiano; Ubertini, Francesco; Martini, Alberto

doi:10.5937/jsscm1602030p

Cited by 11 publications

(11 citation statements)

References 21 publications

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“…In practice, due to company production scheduling and resource issues, vibration issues are often detected at late steps of the design workflow, when the machine prototype is assembled and firstly tested. In such an instance, experimental measurements are generally performed in order to identify the critical parts of the machine and A Martini et al: Structural and Elastodynamic Analysis of Rotary Transfer Machines by FEM 2 properly modify their design (Schedlinski et al 2002, Liang et al 2013, Pavlovic et al 2016). This process eventually proves costly and time consuming.…”

Section: Introductionmentioning

confidence: 99%

Structural and Elastodynamic Analysis of Rotary Transfer Machines by Finite Element Model

Martini¹,

Troncossi²,

Vincenzi³

2017

JSSCM

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Vibration monitoring and control are central topics for machine tools, since high vibration levels reduce the quality of machined surfaces and shorten the tool life. In order to predict potential vibration issues since the early design stage, it is necessary to implement ad hoc numerical models for modal analysis. This requires significant efforts and possible conflicts with tight production scheduling of companies. This work focuses on a specific family of rotary transfer machines for the manufacturing of parts related to lock&keys industry. It investigates the possibility to achieve an acceptable estimation of the elastodynamic behavior of the machine tools through limited modifications of the Finite Element (FE) models used for structural analysis, which are generally available in the early phases of the design process. The structural FE model of a new machine tool is implemented and validated through experimental tests performed on a prototype. Then, the elastodynamic FE model is derived and simulated. The numerical results are consistent with the data provided by Experimental Modal Analysis (EMA). Hence, the proposed approach is confirmed viable and will be integrated in the company workflow of future machine designs.

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Section: Introductionmentioning

confidence: 99%

Structural and Elastodynamic Analysis of Rotary Transfer Machines by Finite Element Model

Martini¹,

Troncossi²,

Vincenzi³

2017

JSSCM

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show abstract

“…It is a fundamental step, generally used as starting point for other more detailed dynamic analyses (such as harmonic, dynamic and rigid body motion). It considers that every structure can be subjected to the influence of variable external forces, which in case of their variance in a resonance condition might entail significant wear and durability issues on its mechanical components [44].…”

Section: Fem Modal Analysismentioning

confidence: 99%

Analysis of the suspension design evolution in solar cars

De¹,

Fragassa²,

Pavlović³

et al. 2017

FME Transaction

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“…Martini and Troncossi [37] determined the upgrade of an automated line for plastic cap manufacture based on experimental vibration analysis. Pavlovic et al [38] investigated the modal analysis and stiffness optimization: the case of a tool machine for ceramic tile surface finishing using FEM.…”

Section: Introductionmentioning

confidence: 99%

Comparison for the Effect of Different Attachment of Point Masses on Vibroacoustic Behavior of Parabolic Tapered Annular Circular Plate

et al. 2019

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In this paper, a comparison for the effect of different arrangement of point masses on vibroacoustic behavior of parabolic tapered annular circular plate with different taper ratios are analyzed by keeping the total mass of the plate plus point masses constant. Three different arrangement of thickness variation are considered. The mathematical tool FEM using ANSYS is used to determine the vibration characteristic and both FEM and Rayleigh integral is used to determine the acoustic behavior of the plate. Further, Case II plate (parabolic decreasing increasing thickness variation) for all combination of point masses is found to have reduction in natural frequency parameter in comparison to other cases of parabolic tapered plate. In terms of acoustic behavior, sound power levels of different cases of plate with different point mass combination are observed. It is observed that the Case II plate with two point masses combination shows the highest sound power and the Case III plate for all cases of point mass combination is least prone to acoustic behavior. Furthermore, It is observed that at low forcing frequency average radiation efficiency of parabolic tapered plate for different arrangement of point masses is almost same, but at high forcing frequency average radiation increases for higher taper ratio. Finally, a brief discussion of peak sound power reduction and actuation for different arrangement of point masses with different taper ratios are provided.

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

Cited by 11 publications

References 21 publications

Structural and Elastodynamic Analysis of Rotary Transfer Machines by Finite Element Model

Structural and Elastodynamic Analysis of Rotary Transfer Machines by Finite Element Model

Analysis of the suspension design evolution in solar cars

Comparison for the Effect of Different Attachment of Point Masses on Vibroacoustic Behavior of Parabolic Tapered Annular Circular Plate

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