Limit Operation Regimes of Actuators Working on the Principle of Thermoelasticity

Doležel, Ivo; Karban, Pavel; Ulrych, B.; Pantelyat, Michael G.; Matyukhin, Yuriy; Gontarowskiy, Pavlo; Шульженко, Н. Г.

doi:10.1109/tmag.2007.916226

Cited by 12 publications

(7 citation statements)

References 5 publications

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“…The principle of a common uncontrolled thermoelastic actuator was described in detail in [1] and [2]. Time variable magnetic field generated by a coil carrying field current ext I induces in a metal dilatation element eddy currents of density eddy J that produce corresponding Joule losses J p .…”

Section: Formulation Of the Technical Problemmentioning

confidence: 99%

“…If element 2 is in rest, so is the plunger 3. • The clutch 1 S is on, 2 S is off: the plunger 3 is in the stable position even when the element 2 dilatates or shifts back in the process of cooling. …”

Section: Formulation Of the Technical Problemmentioning

confidence: 99%

“…These disadvantages may largely be suppressed by a device using for realization of extremely small shifts the phenomenon of the thermal dilatation. Such a device works on the principle of common uncontrolled thermoelastic actuators (see [1], [2]). This device is, moreover, supplemented with some auxiliary parts (friction clutch, miniature electromagnetic actuator and some others) allowing its accurate control.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Combined actuator for accurate setting of position based on thermoelasticity produced by induction heating

Doležel

Kronerova

Ulrych

et al. 2009

2009 International Conference on Electrical Machines and Systems

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Section: Formulation Of the Technical Problemmentioning

confidence: 99%

Section: Formulation Of the Technical Problemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Combined actuator for accurate setting of position based on thermoelasticity produced by induction heating

Doležel

Kronerova

Ulrych

et al. 2009

2009 International Conference on Electrical Machines and Systems

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“…The authors can mention (Dolezel et al, 2007(Dolezel et al, , 2008Shulzhenko et al, 2004), where they solve particular tasks in the domain, but in somewhat simplified formulation (weakly or quasi-coupled), (Biro et al, 1992;Iatcheva and Stancheva, 2002;Kim et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of electrical engineering devices

Pantelyat

Шульженко

Matyukhin

et al. 2011

COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

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Purpose -The paper seeks to present a methodology of computer simulation of coupled magneto-thermo-mechanical processes in various electrical engineering devices. The methodology allows determining their parameters, characteristics and behaviour in various operation regimes. Design/methodology/approach -The mathematical model consisting of three equations describing magnetic field, temperature field and field of mechanical strains and stresses (or thermoelastic displacements) is solved numerically, partially in the hard-coupled formulation. Findings -The methodology seems to be sufficiently robust, reliable and applicable to a wide spectrum of devices. Research limitations/implications -At this stage of research, the hard-coupled formulation of thermo-mechanical (or thermoelastic) problems is still possible only in 2D. Practical implications -The methodology can successfully be used for design of numerous machines, apparatus and devices from the area of low-frequency electrical engineering ranging from small actuators to large synchronous generators. Originality/value -Complete numerical analysis of coupled magneto-thermo-mechanical phenomena in electrical devices.

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“…In many cases, multiphysics analysis of such devices must also include the influence of thin insulation layers and contact thermal resistances for obtaining more realistic results. Thin layers occur, for example, in the form of various bandages [1], contact resistances (of thermal origin) play a significant role in different shrink fits [2] and devices for a number of industrial purposes [3].…”

mentioning

confidence: 99%

Finite Element Technique for Solution of Thermo-Contact Problems and Its Application in Numerical Analysis of Devices Working With Induction Heating

Pantelyat¹,

Doležel²

2016

Elektroteh. elektromeh.

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Purpose. To develop an effective approach for the numerical solution of transient thermo-contact problems and present a typical example of its utilization regarding devices working on the principle of thermoelasticity produced by induction heating and specific technological processes intended for assembly and disassembly of systems containing shrink fits. Methodology. A finite element technique for solution of 2D multiphysics (electromagnetic, thermal and structural) problems is developed, taking into account temperature dependences of material properties and continuous variations of the contact surfaces. Modeling of the contact interaction between two parts is based on the concept of a special contact finite element having no thickness. The functional for the temperature problem is supplemented with components corresponding to the thermal conductivity of this contact layer. The heat generated due to mutual sliding of both parts can also be taken into account, but the heat capacity (specific heat) of the contact layer is neglected. Using a special 1D 4-node finite elements a system of equations for the description of the thermo-contact problem is obtained. Originality. Relatively simple analytical formulae for calculation of the contact thermal resistances occurring in specific parts of electrical machines are known. The paper offers an alternative approach for the numerical solution of transient thermo-contact problems based on the concept of a special 1D contact finite element having no thickness. Results. The presented technique is applied for the computer simulation of assembly and disassembly of a shrink fit using induction heating. Conclusions regarding the choice of technological modes are made. Comparative computations for drills made from hard alloy and alloyed tool steel are carried out. References 8, figures 6. Key words: induction heating, thermoelasticity, multiphysics problems, numerical analysis, finite element method.Описана методика решения методом конечных элементов мультифизических (электромагнитных, тепловых и меха-нических) задач с учетом зависимостей свойств материалов от температуры и изменения контактных поверхно-стей. Предложенный подход использован для численного анализа устройств, функционирующих на базе явления тер-моупругости в процессе индукционного нагрева и оригинальных технологических процессов, предназначенных для сборки и разборки конструкций с напряженными посадками. Применение разработанной методики проиллюстриро-вано на конкретном примере. Приведен анализ полученных результатов. Библ. 8, рис. 6. Ключевые слова: индукционный нагрев, термоупругость, мультифизические задачи, численный анализ, метод конеч-ных элементов.

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Limit Operation Regimes of Actuators Working on the Principle of Thermoelasticity

Cited by 12 publications

References 5 publications

Combined actuator for accurate setting of position based on thermoelasticity produced by induction heating

Combined actuator for accurate setting of position based on thermoelasticity produced by induction heating

Numerical simulation of electrical engineering devices

Finite Element Technique for Solution of Thermo-Contact Problems and Its Application in Numerical Analysis of Devices Working With Induction Heating

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