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Приказ резултата 31-40 од 373
Modeling, simulation, and control of an electromechanical aerofin control system with a PWM-controlled DC motor
(Automatic Control and Computer Sciences, 2008)
A nonlinear model of an electromechanical actuator (EMA) system for aerofin control is presented. The EMA is realized with a permanent magnet brush DC motor controlled by a constant current driver. In this paper we introduced ...
Predictions of heat transfer from a flat plate to impinging jet by numerical simulations
(Silesian University of Technology, 2008)
A numerical investigation is carried out to predict heat transfer and turbulent fluid flow in an axisymmetric turbulent impinging jet. Four common near-wall two-equation-and three Reynolds stress models were considered in ...
Development and application of crack parameters
(Springer, Dordrecht, 2009)
The development, definition and implementation of crack parameters (stress intensity factor, crack tip open displacement, J integral, filial stretch zone) are presented. They are now used for structural integrity and ...
Delamination detection in woven composite laminates with embedded optical fibers
(Wiley-VCH Verlag, 2001)
Screen printed barium titanate thick films prepared from mechanically activated powders
(Trans Tech Publications Ltd, 2002)
Barium titanate thick films were prepared from mechanically activated powders based on BaCO3 and TiO2. The thick films were screen-printed on alumina substrates electroded with Ag/Pd. The BT films were sintered at 850°C ...
Prediction of ductile fracture initiation using micromechanical analysis
(Pergamon-Elsevier Science Ltd, Oxford, 2004)
In the paper ductile fracture initiation analysis of low-alloyed ferritic steel has been made by application of two micromechanical models: the Rice-Tracey void growth model and the Gurson-Tvergaard-Needleman (GTN) model. ...
Model of influencing factors for hydrogen damages of boiler evaporator tubes
(11th International Conference on Fracture 2005, ICF11, 2005)
Hydrogen-induced fractures of metallic components of thermal fossil fuel power plants (TPP) presents very serious exploitation problem and often exert considerable influence on the loss of power plant availability. Hydrogen ...
Refrigerant distribution in the inlet header of plate evaporators
(SAE International, 2002)
This paper presents experimental results concerning the distribution of the refrigerant R134a in the inlet header of plate evaporators in automotive air-conditioning systems, as a function of operating conditions. Typical ...
Numerical simulation of impact effects during helmet - Hard obstacle collision
(40th AIAA Aerospace Sciences Meeting and Exhibit, 2002)
This paper presents a simulation model of absorption effects during helmet collision with a hard obstacle.lt is based on a necessity to predict undesired consequences that may occur in case of helemet colision and impact ...
Group theoretical formulation of quadrilateral and hexahedral isoparametric finite elements
(Pergamon-Elsevier Science Ltd, Oxford, 2004)
The group supermatrix procedure, developed by Zlokovic, is applied for derivation of stiffness matrices of quadrilateral and hexahedral isoparametric finite elements using the symmetry groups C-2v and D-2h respectively. ...