Nonlinear Dynamic Force Balance Mass-Spring-Damper Model of Laser Droplet Generation from a Metal Wire

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JEROMEN, Andrej ;GOVEKAR, Edvard .
Nonlinear Dynamic Force Balance Mass-Spring-Damper Model of Laser Droplet Generation from a Metal Wire. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 65, n.4, p. 201-211, may 2019. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/article/nonlinear-dynamic-force-balance-mass-spring-damper-model-of-droplet-generation-from-a-metal-wire/>. Date accessed: 12 aug. 2022. 
doi:http://dx.doi.org/10.5545/sv-jme.2019.6062.
Jeromen, A., & Govekar, E.
(2019).
Nonlinear Dynamic Force Balance Mass-Spring-Damper Model of Laser Droplet Generation from a Metal Wire.
Strojniški vestnik - Journal of Mechanical Engineering, 65(4), 201-211.
doi:http://dx.doi.org/10.5545/sv-jme.2019.6062
@article{sv-jmesv-jme.2019.6062,
	author = {Andrej  Jeromen and Edvard  Govekar},
	title = {Nonlinear Dynamic Force Balance Mass-Spring-Damper Model of Laser Droplet Generation from a Metal Wire},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {65},
	number = {4},
	year = {2019},
	keywords = {laser droplet generation; mass-spring-damper system; nonlinear model; time series; time-frequency analysis},
	abstract = {In laser droplet generation process a metal wire is continuously fed into the focus of a pulsed annular laser beam which melts the wire-end and forms a growing pendant droplet that is then detached from the wire. The process is highly complex due to its non-stationarity, non-linearity, and interplay of numerous physical phenomena. With the aim to describe the process, a low-dimensional non-linear dynamic force balance mass-spring-damper model of the pendant droplet with time-dependent coefficients was formulated based on experimental observations of the process. The comparison between the modelled and experimental droplet centroid vertical position time series and their time-frequency maps showed that the model captures the essential pendant droplet dynamics in the selected laser pulse frequency range between 60 Hz and 190 Hz. It was also found that the modeled time of detachment and the detached droplet diameter were in good agreement with the experimental results including the bifurcation at the laser pulse frequency of 120 Hz and coexistence of two detached droplet diameter values below that frequency. In addition, pendent droplet lateral oscillation and Rayleigh-Plateau instability were identified to have significant influence on the process outcome in certain laser pulse frequency ranges.},
	issn = {0039-2480},	pages = {201-211},	doi = {10.5545/sv-jme.2019.6062},
	url = {https://www.sv-jme.eu/article/nonlinear-dynamic-force-balance-mass-spring-damper-model-of-droplet-generation-from-a-metal-wire/}
}
Jeromen, A.,Govekar, E.
2019 May 65. Nonlinear Dynamic Force Balance Mass-Spring-Damper Model of Laser Droplet Generation from a Metal Wire. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 65:4
%A Jeromen, Andrej 
%A Govekar, Edvard 
%D 2019
%T Nonlinear Dynamic Force Balance Mass-Spring-Damper Model of Laser Droplet Generation from a Metal Wire
%B 2019
%9 laser droplet generation; mass-spring-damper system; nonlinear model; time series; time-frequency analysis
%! Nonlinear Dynamic Force Balance Mass-Spring-Damper Model of Laser Droplet Generation from a Metal Wire
%K laser droplet generation; mass-spring-damper system; nonlinear model; time series; time-frequency analysis
%X In laser droplet generation process a metal wire is continuously fed into the focus of a pulsed annular laser beam which melts the wire-end and forms a growing pendant droplet that is then detached from the wire. The process is highly complex due to its non-stationarity, non-linearity, and interplay of numerous physical phenomena. With the aim to describe the process, a low-dimensional non-linear dynamic force balance mass-spring-damper model of the pendant droplet with time-dependent coefficients was formulated based on experimental observations of the process. The comparison between the modelled and experimental droplet centroid vertical position time series and their time-frequency maps showed that the model captures the essential pendant droplet dynamics in the selected laser pulse frequency range between 60 Hz and 190 Hz. It was also found that the modeled time of detachment and the detached droplet diameter were in good agreement with the experimental results including the bifurcation at the laser pulse frequency of 120 Hz and coexistence of two detached droplet diameter values below that frequency. In addition, pendent droplet lateral oscillation and Rayleigh-Plateau instability were identified to have significant influence on the process outcome in certain laser pulse frequency ranges.
%U https://www.sv-jme.eu/article/nonlinear-dynamic-force-balance-mass-spring-damper-model-of-droplet-generation-from-a-metal-wire/
%0 Journal Article
%R 10.5545/sv-jme.2019.6062
%& 201
%P 11
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 65
%N 4
%@ 0039-2480
%8 2019-05-06
%7 2019-05-06
Jeromen, Andrej, & Edvard  Govekar.
"Nonlinear Dynamic Force Balance Mass-Spring-Damper Model of Laser Droplet Generation from a Metal Wire." Strojniški vestnik - Journal of Mechanical Engineering [Online], 65.4 (2019): 201-211. Web.  12 Aug. 2022
TY  - JOUR
AU  - Jeromen, Andrej 
AU  - Govekar, Edvard 
PY  - 2019
TI  - Nonlinear Dynamic Force Balance Mass-Spring-Damper Model of Laser Droplet Generation from a Metal Wire
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2019.6062
KW  - laser droplet generation; mass-spring-damper system; nonlinear model; time series; time-frequency analysis
N2  - In laser droplet generation process a metal wire is continuously fed into the focus of a pulsed annular laser beam which melts the wire-end and forms a growing pendant droplet that is then detached from the wire. The process is highly complex due to its non-stationarity, non-linearity, and interplay of numerous physical phenomena. With the aim to describe the process, a low-dimensional non-linear dynamic force balance mass-spring-damper model of the pendant droplet with time-dependent coefficients was formulated based on experimental observations of the process. The comparison between the modelled and experimental droplet centroid vertical position time series and their time-frequency maps showed that the model captures the essential pendant droplet dynamics in the selected laser pulse frequency range between 60 Hz and 190 Hz. It was also found that the modeled time of detachment and the detached droplet diameter were in good agreement with the experimental results including the bifurcation at the laser pulse frequency of 120 Hz and coexistence of two detached droplet diameter values below that frequency. In addition, pendent droplet lateral oscillation and Rayleigh-Plateau instability were identified to have significant influence on the process outcome in certain laser pulse frequency ranges.
UR  - https://www.sv-jme.eu/article/nonlinear-dynamic-force-balance-mass-spring-damper-model-of-droplet-generation-from-a-metal-wire/
@article{{sv-jme}{sv-jme.2019.6062},
	author = {Jeromen, A., Govekar, E.},
	title = {Nonlinear Dynamic Force Balance Mass-Spring-Damper Model of Laser Droplet Generation from a Metal Wire},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {65},
	number = {4},
	year = {2019},
	doi = {10.5545/sv-jme.2019.6062},
	url = {https://www.sv-jme.eu/article/nonlinear-dynamic-force-balance-mass-spring-damper-model-of-droplet-generation-from-a-metal-wire/}
}
TY  - JOUR
AU  - Jeromen, Andrej 
AU  - Govekar, Edvard 
PY  - 2019/05/06
TI  - Nonlinear Dynamic Force Balance Mass-Spring-Damper Model of Laser Droplet Generation from a Metal Wire
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 65, No 4 (2019): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2019.6062
KW  - laser droplet generation, mass-spring-damper system, nonlinear model, time series, time-frequency analysis
N2  - In laser droplet generation process a metal wire is continuously fed into the focus of a pulsed annular laser beam which melts the wire-end and forms a growing pendant droplet that is then detached from the wire. The process is highly complex due to its non-stationarity, non-linearity, and interplay of numerous physical phenomena. With the aim to describe the process, a low-dimensional non-linear dynamic force balance mass-spring-damper model of the pendant droplet with time-dependent coefficients was formulated based on experimental observations of the process. The comparison between the modelled and experimental droplet centroid vertical position time series and their time-frequency maps showed that the model captures the essential pendant droplet dynamics in the selected laser pulse frequency range between 60 Hz and 190 Hz. It was also found that the modeled time of detachment and the detached droplet diameter were in good agreement with the experimental results including the bifurcation at the laser pulse frequency of 120 Hz and coexistence of two detached droplet diameter values below that frequency. In addition, pendent droplet lateral oscillation and Rayleigh-Plateau instability were identified to have significant influence on the process outcome in certain laser pulse frequency ranges.
UR  - https://www.sv-jme.eu/article/nonlinear-dynamic-force-balance-mass-spring-damper-model-of-droplet-generation-from-a-metal-wire/
Jeromen, Andrej, AND Govekar, Edvard.
"Nonlinear Dynamic Force Balance Mass-Spring-Damper Model of Laser Droplet Generation from a Metal Wire" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 65 Number 4 (06 May 2019)

Authors

Affiliations

  • University of Ljubljana, Faculty of Mechanical Engineering, Slovenia 1

Paper's information

Strojniški vestnik - Journal of Mechanical Engineering 65(2019)4, 201-211
© The Authors, CC-BY 4.0 Int. Change in copyright policy from 2022, Jan 1st.

https://doi.org/10.5545/sv-jme.2019.6062

In laser droplet generation process a metal wire is continuously fed into the focus of a pulsed annular laser beam which melts the wire-end and forms a growing pendant droplet that is then detached from the wire. The process is highly complex due to its non-stationarity, non-linearity, and interplay of numerous physical phenomena. With the aim to describe the process, a low-dimensional non-linear dynamic force balance mass-spring-damper model of the pendant droplet with time-dependent coefficients was formulated based on experimental observations of the process. The comparison between the modelled and experimental droplet centroid vertical position time series and their time-frequency maps showed that the model captures the essential pendant droplet dynamics in the selected laser pulse frequency range between 60 Hz and 190 Hz. It was also found that the modeled time of detachment and the detached droplet diameter were in good agreement with the experimental results including the bifurcation at the laser pulse frequency of 120 Hz and coexistence of two detached droplet diameter values below that frequency. In addition, pendent droplet lateral oscillation and Rayleigh-Plateau instability were identified to have significant influence on the process outcome in certain laser pulse frequency ranges.

laser droplet generation; mass-spring-damper system; nonlinear model; time series; time-frequency analysis