Simulation of leakage flow through dynamic sealing gaps in hydraulic percussion units using a co-simulation approach

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Fältnamn	Indikatorer	Metadata
000		04569naa a2200385 4500
001		oai:DiVA.org:liu-176028
003		SwePub
008		210601s2021 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1760282 URI
024	7	a https://doi.org/10.1016/j.simpat.2021.1023512 DOI
040		a (SwePub)liu
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Andersson, Håkanu Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten,Epiroc, Tools & Attachments Division, Dragonvägen 2, Kalmar, 391 27, Sweden4 aut0 (Swepub:liu)hakan18
245	1 0	a Simulation of leakage flow through dynamic sealing gaps in hydraulic percussion units using a co-simulation approach
264	1	b Elsevier B.V.c 2021
338		a electronic2 rdacarrier
520		a In this study, a previously developed co-simulation method has been expanded to also simulate the dynamic behaviour of sealing gap regions in hydraulic percussion units. This approach is based on a 1D system model representing the fluid components and a 3D finite element model representing the structural parts of a hydraulic hammer. The sealing gap is a fundamental feature of a percussion unit, where the reciprocating motion of the piston is generated by the valve mechanism of the sealing gap. When the gap is closed it will prevent fluid flow between regions of different pressure levels. However, a small leakage flow through the gap will always occur which size depends on the clearance and the position of the piston. The method proposed here will take the structural motion and deformation into consideration when calculating the leakage flow. The deformed state of the structure is approximated by a cylindrical surface, in a least square manner, and communicated through the co-simulation interface to the fluid simulation module, and then used when calculating the leakage flow. This method aims at a more accurate simulation of the leakage flow that will not only yield a more realistic description of the mechanism on the local level, but also a more accurate estimation of global parameters such as overall performance and efficiency. The results indicate that the simulated leakage flow will decrease when dynamic gaps are used in comparison to static gaps, which is a consequence of the deformed structure that will generate smaller clearances. The leakage flow for the dynamic gaps will even be lower than for the static perfectly concentric case, mainly due to the reduction of clearances. The results also indicate that the dynamic eccentricity does not have a major influence on the leakage flow. The outcome from this study highlights the potentials of the described co-simulation approach for analysing the dynamics of the sealing gaps in a hydraulic percussion unit (i.e. gap heights, eccentricity ratios, etc.) including the evaluation of leakage flows and its impact on the overall performance. © 2021
650	7	a TEKNIK OCH TEKNOLOGIERx Maskinteknikx Energiteknik0 (SwePub)203042 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Mechanical Engineeringx Energy Engineering0 (SwePub)203042 hsv//eng
653		a Co-simulation; FEM; Fluid power machinery; Fluid–structure coupling; Sealing gap; System simulation
700	1	a Holmberg, Joakimu Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten4 aut0 (Swepub:liu)joaho56
700	1	a Simonsson, Kjellu Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten4 aut0 (Swepub:liu)kjesi56
700	1	a Hilding, D.u Dynamore Nordic AB, Brigadgatan 5, Linköping, 587 58, Sweden4 aut
700	1	a Schill, M.u Dynamore Nordic AB, Brigadgatan 5, Linköping, 587 58, Sweden4 aut
700	1	a Borrvall, T.u Dynamore Nordic AB, Brigadgatan 5, Linköping, 587 58, Sweden4 aut
700	1	a Sigfridsson, E.u Epiroc, Tools & Attachments Division, Dragonvägen 2, Kalmar, 391 27, Sweden4 aut
700	1	a Leidermark, Danielu Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten4 aut0 (Swepub:liu)danle89
710	2	a Linköpings universitetb Mekanik och hållfasthetslära4 org
773	0	t Simulation (San Diego, Calif.)d : Elsevier B.V.g 111q 111x 1569-190Xx 1878-1462
856	4	u https://liu.diva-portal.org/smash/get/diva2:1559197/FULLTEXT01.pdfx primaryx Raw objecty fulltext:postprint
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-176028
856	4 8	u https://doi.org/10.1016/j.simpat.2021.102351

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Av författaren/redakt...: Andersson, Håkan; Holmberg, Joakim; Simonsson, Kjell; Hilding, D.; Schill, M.; Borrvall, T.; visa fler...; Sigfridsson, E.; Leidermark, Dani ...; visa färre...

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