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作者:George Catalin CRISTEA , Alexandru RADULESCU , Constantin GEORGESCU ...
来源:[J].INCAS BULLETIN, 2018, Vol.10 (4)NIAR
摘要:The rheology of vegetal oils, additivated or not and the factors that influence their viscosity have been studied by specialists, in order to introduce these oils as lubricants in green industries as agriculture, food processing, transportation and for complying with environmenta...
作者:Stefan HOTHAZIE , Camelia-Elena MUNTEANU , Alexandra-Raluca PETRE ...
来源:[J].INCAS BULLETIN, 2018, Vol.10 (4)NIAR
摘要:This paper presents an algorithm that calculates the nominal torque for friction grip joints, followed by its implementation in a Microsoft Excel worksheet that is automated by a macro written in Visual Basic. The algorithm outputs not only the optimum nominal torque (the value f...
作者:Laurentiu MORARU
来源:[J].INCAS BULLETIN, 2018, Vol.10 (4)NIAR
摘要:Squeeze film dampers (SFD) are perhaps the most efficient devices that, can be used nowadays to control the shafts in airworthy turbo-compressors. Various other devices can be successfully used in land-based rotating machinery; however, due to space and weight constraints they ca...
作者:Viorel ANGHEL
来源:[J].INCAS BULLETIN, 2018, Vol.10 (4)NIAR
摘要:This work deals with structural stability analysis of straight beams, having different boundary conditions. The particular case of the beam on elastic foundation is also analyzed. The method of analysis is an approximate integral one, using structural flexibility functions (...
作者:Horia DUMITRESCU , Vladimir CARDOS , Radu BOGATEANU
来源:[J].INCAS BULLETIN, 2018, Vol.10 (4)NIAR
摘要:The turbulence flows involve more or less the intermittent behavior of motions in two aspects. The first one is the so-called external intermittency associated with what is called partially turbulence flows, especially with the strongly irregular and convoluted structure (li...
作者:Corneliu BERBENTE , Sorin BERBENTE
来源:[J].INCAS BULLETIN, 2018, Vol.10 (4)NIAR
摘要:There are arguments proving that what we see now as “normal energy” (including the equivalent mass-energy) represents only 5% of the total energy of the Universe [1]. The rest is invisible meaning that no widely accepted experimental proof exits to put it in evidence. In add...
作者:Nicolae Alexandru STOICA , Alina-Maria PETRESCU , Andrei TUDOR
来源:[J].INCAS BULLETIN, 2018, Vol.10 (4)NIAR
摘要:The automotive disc braking system is based on the friction between a disc and two pads and this friction determines their wear. The theoretical study proposed in this paper aims to model this wear process. It is based on a simplified geometrical model (approximation of the curvi...
作者:Alexandru-Iulian ONEL , Tudorel-Petronel AFILIPOAE , Ana-Maria NECULAESCU ...
来源:[J].INCAS BULLETIN, 2018, Vol.10 (4)NIAR
摘要:The purpose of this paper is to present a fast mathematical model that can be used to quickly asses the drag coefficient for generic launcher configurations. The tool developed based on this mathematical model can be used separately or it can be integrated in a multidisciplinary ...
作者:G. PRASAD , P. MANIGANDAN
来源:[J].INCAS BULLETIN, 2018, Vol.10 (4)NIAR
摘要:This article describes the analytical estimation of time dilation along the elliptical orbit of a satellite due to effects of relativity where the functioning has been time-dependent. The satellites in circular orbit are calibrated as moving frame of reference at constant velocit...
作者:George SUCIU , Andrei Sorin NEAMTU , Jenica NEAMTU ...
来源:[J].INCAS BULLETIN, 2018, Vol.10 (4)NIAR
摘要:Leak monitoring is an essential operation that must be taken into consideration while making the design of a spatial vehicle. In order to make these vehicles function correctly in space and to avoid disasters, one needs to integrate multiple sensors to determine the exact concent...

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