Parametric vibrations of mechanical system with several degrees of freedom under the action of electromagnetic force

... vibrations of a system with single degree of freedom To avoid repeti­ tion, we shall refer below to the paper [1], where the problem of construction of a solu­ tion of the system of equations of the ... in the system with distributed para­ meters the vibrations with ‘ the lowest frequency (i'jj) play the main role Some experiments were performed...

Ngày tải lên: 08/04/2015, 15:30

... the parametric oscillatiòn On the phenomenon o f parametric resonance o f a nonlinear vibrator 283 It is to be noted that the linear oscillation of the mass m in a similar electromechanical system ... electromechanical system, the scheme of which is represented in Fie The vibrator consists of a cantilever beam and a block of mass /?/, which is made...

Ngày tải lên: 08/04/2015, 15:30

... m a regio n w > to a region w < O n the c o n tra ry , if < 0, then the p o in t of in te rse ctio n ponding to a sta b le sta te of o s c illa tio n if M < and to an u n sta b le one if h is ... a n D a o In te c tio n of the elem ents c h a c te riz in g the q u a d tic o n lin e a r it y a n d forced e x c ita tio n w ith the o th er e x c ita tio n s J of M e c h a n...

Ngày tải lên: 08/04/2015, 15:28

... , where p is the mass per unit length of the beam material, E is Y oung’s m o d u lu s, and I is the m om ent of inertia of the cross section of the beam The other notations have the same m eanings ... to the equilibrium of the sy s te m under consideration is stable if MULTI-DYNAMIC ABSORBER E F F E C T R ecalling the form ula ( l ) for the “negative” fr...

Ngày tải lên: 08/04/2015, 15:29

... SC -CO2 treatment on the inactivation of coliform bacteria in untreated water is shown in Figure The coliform bacterial count in the untreated water decreased almost linearly with increasing CO2/ sample ... flow rate and exposure time in the SC -CO2 treatment on the inactivation of coliform and total bacteria in untreated water and to propose the SC -CO2...

Ngày tải lên: 05/09/2013, 09:38

... Relative supply rating 8.4 pu 10.4 pu Rating and loss considerations for large scale system The losses and ratings of a large scale electrical conversion system with MERS solution and with a 2-level ... followed by description of experiments on a 50 kW PM generator and theoretical large scale system loss and rating investigations Magnetic Energ...

Ngày tải lên: 15/10/2013, 16:11

... by m1, while mass m2 constitutes a sum of masses (LCE, conveying material and the active section of EVA) The mass m2 is a variable parameter within the system, because mass of the conveying material ... into two subsystems, shown in Fig IV MATHEMATICAL MODEL OF THE VCS Description of one type of two- mass electromagnetic vibratory conveyor is shown in Fig Flexi...

Ngày tải lên: 03/01/2014, 19:16

Ngày tải lên: 26/01/2014, 07:20

... Nonexistence of positive solutions of an integral system with weights Zhengce Zhang School of Mathematics and Statistics, Xi an Jiaotong University, Xi an, 710049, People’s Republic of China ... Liouville-type theorem for an integral system Comm Pure Appl Anal 5(4), 855–859 (2006) [13] Huang, XT, Li, DS, Wang, LH: Existence and symmetry of positive solutions...

Ngày tải lên: 20/06/2014, 21:20

... Nonexistence of positive solutions of an integral system with weights Zhengce Zhang School of Mathematics and Statistics, Xi an Jiaotong University, Xi an, 710049, People’s Republic of China ... Liouville-type theorem for an integral system Comm Pure Appl Anal 5(4), 855–859 (2006) [13] Huang, XT, Li, DS, Wang, LH: Existence and symmetry of positive solutions...

Ngày tải lên: 20/06/2014, 21:20

... for a predator-prey model with modified LeslieGower and Holling- type II schemes Appl Math Lett 2003, 16(7):1069-1075 Nindjina AF, Aziz-Alaoui MA, Cadivel M: Analysis of a predator-prey model with ... stability in a delayed predator-prey system with Michaelis-Menten type functional response Appl Math Comput 2002, 130(2-3):441-455 12 Xu R, Chaplain MAJ, Davidson...

Ngày tải lên: 21/06/2014, 03:20

... Lotka-Volterra competitive system with delays and feedback controls Recently, in Liao et al considered the following general nonautonomous discrete Lotka-Volterra competitive system with delays and feedback ... LotkaVolterra competitive system with delays and feedback controls,” Journal of Computational and Applied Mathematics, vol 211, no 1, pp...

Ngày tải lên: 21/06/2014, 11:20

... functional response,” Journal of Mathematical Analysis and Applications, vol 281, no 1, pp 395–401, 2003 T K Kar and U K Pahari, “Modelling and analysis of a prey-predator system with stage-structure ... response,” Journal of Mathematical Analysis and Applications, vol 317, no 2, pp 464–474, 2006 D T Dimitrov and H V Kojouharov, “Complete mathematical analysis of pred...

Ngày tải lên: 21/06/2014, 11:20

... delay dynamic equations of first order,” Advances in Difference Equations, vol 2008, Article ID 458687, 12 pages, 2008 10 H A Agwo, “On the oscillation of first order delay dynamic equations with ... difference equations with several delays,” Advances in Dynamical Systems and Applications, vol 1, no 1, pp 29–47, 2006 M Bohner and A Peterson, Dynamic Equations on Time Sc...

Ngày tải lên: 21/06/2014, 11:20

... time to maturity w is the natural death rate of the immature prey population d1 is the natural death rate of the mature prey population d2 is the natural death rate of the predator population The ... the death rate The population is birth pulse as intrinsic rate of natural increase and density dependence rate of predator population are denoted by a, b, respectively The pulse...

Ngày tải lên: 21/06/2014, 11:20