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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Provozní parametry a charakteristiky aktuátorů s dilatačním prvkem
 Doležel, Ivo ; Karban, P. ; Ulrych, B. ; Barglik, J. ; Pantelyat, M. ; Matyukhin, Y. ; Gontarowskiy, P.
In specific applications one needs actuators characterized by very high forces at small shifts. As actuators of classical constructions mostly cannot satisfy these requirements, the authors designed another arrangement with an inductively heated dilatation element. But huge mechanical strains and stresses of thermoelastic origin acting in its structural parts could lead to its damage or destruction. The paper deals with mathematical modeling of the device that is solved numerically in the combined formulation (while the electromagnetic field is solved independently, the thermal and thermoelastic effects are solved in the hard-coupled formulation). The algorithm is illustrated on a typical example whose results are discussed.
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Numerical Analysis of Induction Heating-Based Assembly and Disassembly of Shrink Fits
 Shulzhenko, M. ; Gontarowskiy, P. ; Matyukhin, Y. ; Pantelyat, M. ; Doležel, Ivo ; Ulrych, B.
The paper deals with mathematical modelling of assembly and disassembly of structural parts that are coupled with interference fit by means of induction heating. The process is formulated as a quasi-coupled electromagnetic-thermoelastic problem in 2D arrangement.Its solution is based on time stepping with built-in internal iterative processes for improvement of accuracy of parameters of linearised equations describing all three involved fields that are in each time step solved by the finite element techniques.
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