Improving FEM-based solid mechanics simulations for ultrashort pulse laser ablation by integrating an equation of state and material separation

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dc.contributor.authorRedka, David
dc.contributor.authorVollmann, Julian
dc.contributor.authorWinter, Jan
dc.contributor.authorSchmidt, Michael
dc.contributor.authorMinár, Jan
dc.contributor.authorHuber, Heinz Paul
dc.contributor.authorSchmid, Philipp
dc.date.accessioned2025-05-19T19:30:52Z
dc.date.available2025-05-19T19:30:52Z
dc.date.issued2025
dc.description.abstract-translatedAccurate simulations are paramount for deepening our understanding of ultrashort pulse laser ablation, a complex process involving non-equilibrium thermal and material transport on time-scales spanning several orders of magnitude. In response to this need, we propose a novel approach that enhances the use of a readily available finite element method tool for multiphysics simulations by incorporating an equation of state (EOS). This new model, termed the two-temperature solid mechanics model including EOS (SM-EOS), has been meticulously tested against isostatic changes and compared with an experimentally validated two-temperature hydrodynamic simulation (HD). Further comparison was made with classical TTM solid mechanics (SM-ISO) simulations using constant or isobaric material parameters. A mechanism for describing material separation due to spallation is also incorporated in the model. Bulk aluminum serves as prototype within this investigation. Our results show that SM-EOS aligns closely with HD, significantly outperforming the classical SM-ISO simulations. Given its robust performance and ease of implementation, our SM-EOS model is expected to serve as a valuable tool for both research groups and industrial applications, thereby facilitating further investigations into ultrashort pulse laser ablation phenomena. Furthermore, it is expected that our approach could influence other fields in simulating phase transitions and extreme states of matter utilizing solid mechanics calculations.en
dc.description.sponsorshipEH22_008/0004634 Strojní inženýrství biologických a bioinspirovaných systémůcs
dc.format11 s.cs
dc.identifier.doihttps://doi.org/10.1016/j.ijheatmasstransfer.2025.126714
dc.identifier.urihttp://hdl.handle.net/11025/59180
dc.language.isoenen
dc.publisherElsevieren
dc.rights© CC BY 4.0en
dc.rights.accessopenAccessen
dc.subjectlaserové mikroobráběnícs
dc.subjectzávislost na teplotě a hustotěcs
dc.subjectCOMSOL multiphysicscs
dc.subjectdvouteplotní modelcs
dc.subjectfotomechanická ablacecs
dc.subject.translatedlaser micro machiningen
dc.subject.translatedtemperature and density dependencyen
dc.subject.translatedCOMSOL multiphysicsen
dc.subject.translatedtwo-temperature modelen
dc.subject.translatedphoto-mechanical ablationen
dc.titleImproving FEM-based solid mechanics simulations for ultrashort pulse laser ablation by integrating an equation of state and material separationen
dc.typearticleen
dc.typečlánekcs
dc.type.statusPeer revieweden
dc.type.versionpublishedVersionen
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local.files.size3115569*
local.has.filesyes*

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