Modelling of Bodies Contact
Result description
Dissertation thesis, deals with a modelling of three member mechanical systems during ideal and operating state. The work is oriented to the analytical description of elastostatic normal contact in the manner of the Hertz theory. The main purpose of thiswork is to bring a view on the contact properties of a screw compressor in an operating state in comparison with contact properties in the ideal state. The comparison is made in position in which the maximal contact force occurs. This force between screw rotors is caused actually by a compressed medium while one rotor is axially free and the second screw rotor is held by an engine. The next contribution is a numerical simulation of a contact point motion during revolution per one tooth with consideration of the rotors perfect geometry. The theoretical contribution is made by approximation at arbitrary point by a power series up to the n-th order which is very useful for analytical description of point contact.
Keywords
analytical solutionbinomialcontact mechanicscontact pressurecurvaturecycloiddifferential calculuseigen valueseigen vectorselliptical integralFEMgeometryHertzindicatrixnumerical simulationpower seriesscrew compressorsplinestresssurfacetensorthree member mechanismvisualizationweak form
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Modelling of Bodies Contact
Original language description
Dissertation thesis, deals with a modelling of three member mechanical systems during ideal and operating state. The work is oriented to the analytical description of elastostatic normal contact in the manner of the Hertz theory. The main purpose of thiswork is to bring a view on the contact properties of a screw compressor in an operating state in comparison with contact properties in the ideal state. The comparison is made in position in which the maximal contact force occurs. This force between screw rotors is caused actually by a compressed medium while one rotor is axially free and the second screw rotor is held by an engine. The next contribution is a numerical simulation of a contact point motion during revolution per one tooth with consideration of the rotors perfect geometry. The theoretical contribution is made by approximation at arbitrary point by a power series up to the n-th order which is very useful for analytical description of point contact.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
JR - Other machinery industry
OECD FORD branch
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Result continuities
Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Basic information
Result type
O - Miscellaneous
CEP
JR - Other machinery industry
Year of implementation
2010