dynamic stability and nonlinear parametric vibrations of rectangular plates

... the stability and toxicity of PANs, and further investigated the sustained release behavior in vivo of drug loading in PANs PA was firstly synthesized and characterized by FT-IR and 1H NMR, and ... integration value of acetyl protons at 1.8–2.2 ppm and B is that of OH protons and H-1 to H-6 protons of pullulan moiety observed at more than 3.5 ppm Preparation and characterization of PANs and PA/EPI ... G2F-20, Eindhoven, Holland) The stability of PANs in water In order to study the stability of PANs, the above dispersions were stored for months at 4°C Macroscopic characteristics of NPs dispersions...

Ngày tải lên: 23/04/2013, 21:38

... both in shape and in dimension to the fibrils of hTTR and sbTTR formed by heating The thick and straight morphology of heat-induced fibrils of hTTR, sbTTR and ecTRP is similar to that of amyloid fibrils ... E Lundberg et al Stability and fibril formation of TTR and TRP Fig DSC profiles of hTTR, sbTTR, and ecTRP The melting temperatures (Tm) were 97.8 °C for hTTR, 93.0 °C for sbTTR, and 66.7 °C for ... Tm of the protein These fibrils are amyloidogenic, as determined from their Stability and fibril formation of TTR and TRP tinctorial properties in the ThT-binding and CR-binding assays hTTR and...

Ngày tải lên: 16/03/2014, 01:20

... digestion of D122Y and G130V or I154F and W155R Impact of different clinical mutations on frataxin stability and iron binding To compare the effect of the mutations on the folding thermodynamics of ... rest of the molecule, in agreement with the larger rmsd of the solution bundle in these regions [14] Residues in the loop between strands b4 and b5 (Thr149, Asn151 and Lys152), and at the end of ... which bears direct relevance for our understanding of FRDA, we performed a comparative study of the protein dynamics of frataxin variants carrying mutations of clinical interest We focused on how...

Ngày tải lên: 30/03/2014, 04:20

... Neerven, and F Ră biger, Tauberian theorems and stability of solutions of the a Cauchy problem,” Transactions of the American Mathematical Society, vol 350, no 5, pp 2087–2103, 1998 K.-J Engel and ... , it is easy to see that the strong stability and asymptotic almost periodicity of 1.1 follows from the strong stability and asymptotic almost periodicity of S t , respectively Moreover, from ... is analytic on C and λq λ , λ2 q λ are bounded on C , where H λ , λ − α − iη q λ : 2.29 for each iη ∈ iE iE is the set of half-line spectrum of H λ and α > 0, iii for each x ∈ X and iη ∈ iE, the...

Ngày tải lên: 21/06/2014, 05:20

... junction of the of the 5'- and 3' is shown at ThePP7 bottom, and the sequences2PP7itduplication ends of The sequence at the junction of the 2PP7 duplication is shown at bottom, and the sequences of ... the structure of the icosahedron Partial reduction of the PP7 VLP results in the appearance of monomers, and multiples of monomers up to the size of hexamers However, VLPs made of single-chain ... Figure of DTT reduction of PP7 and 2PP7 VLPs with varying concentrations SDS polyacrylamide gel electrophoresis of the products of SDS polyacrylamide gel electrophoresis of the products of reduction...

Ngày tải lên: 11/08/2014, 00:22

... 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 ... same time in more than on resonant region The stability of stationary regimes of vibrations may be found by analysing Eqs (1.12) The criteria of stability formed in [1] are: cw >0 cAj for w = ... electromagnetic force depends on the location of the electromagnet and on the vibrations of the beam, and has intensity , C 'L a — — oy l We -assume that the material of the beam follows the law [3] °x...

Ngày tải lên: 08/04/2015, 15:30

... 1.2.1 Elastic buckling of rectangular plates 1.2.2 Plastic buckling of rectangular plates 1.3 Objectives and Scope of Study 12 1.4 Outline of Thesis 13 CHAPTER 2: BUCKLING OF PLATES UNDER END LOADS ... Incremental Theory of Plasticity; Deformation Theory of Plasticity; Rectangular plates; Intermediate load; Levy method; Stability criteria iv NOMENCLATURE a length of plates b width of plates c dimensionless ... BUCKLING OF RECTANGULAR PLATES UNDER INTERMEDIATE AND END LOADS Chen Yu (B Eng.) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING DEPARTMENT OF CIVIL ENGINEERING NATIONAL UNIVERSITY OF SINGAPORE...

Ngày tải lên: 02/10/2015, 12:56

Ngày tải lên: 03/10/2015, 20:58

... Chemical Shifts of CHABII at pH 6.3 and 293 K Proton Chemical Shifts of CHABII at pH 4.0 and 293 K Proton Chemical Shifts of [Phe21]-CHABII at pH 6.3 and 293 K Proton Chemical Shifts of [Phe21]-CHABII ... enhancement led to an increase of the thermal stability of [Phe21]-CHABII by ~17 degree This observation highlights the complexity of determinants of protein thermal stability and further implies the ... curves of CHABII at pH 4.0 and CHABII at pH 6.5 Figure NOESY spectrum of [Phe21]-CHABII (500 MHz, mixing time of 250 ms) acquired at pH 4.0 and 20 ℃ Figure CαH conformational shifts of CHABII and...

Ngày tải lên: 26/11/2015, 12:54

... target degrees of freedom (DOFs) with a limited number of sensors (six only), a number of setups were planned The measured DOFs in different setups were designed to share a common set of DOFs so that ... theory and discussion of practical issues encountered The posterior uncertainty and setup-to-setup variability of modal properties shall also be discussed from a Bayesian and frequentist point of ... bands (i.e., m = 1) For a single mode in the selected frequency band, h consists of only one set of natural frequency f, damping ratio f, power spectral density (PSD) of modal force S, PSD of...

Ngày tải lên: 25/11/2016, 21:53

... target degrees of freedom (DOFs) with a limited number of sensors (six only), a number of setups were planned The measured DOFs in different setups were designed to share a common set of DOFs so that ... theory and discussion of practical issues encountered The posterior uncertainty and setup-to-setup variability of modal properties shall also be discussed from a Bayesian and frequentist point of ... bands (i.e., m = 1) For a single mode in the selected frequency band, h consists of only one set of natural frequency f, damping ratio f, power spectral density (PSD) of modal force S, PSD of...

Ngày tải lên: 09/12/2016, 23:02

... and all associated documentation are proprietary and copyrighted products Worldwide rights of ownership rest with Computers and Structures, Inc Unlicensed use of the program or reproduction of ... trademark of Microsoft Corporation Adobe and Acrobat are registered trademarks of Adobe Systems Incorporated DISCLAIMER CONSIDERABLE TIME, EFFORT AND EXPENSE HAVE GONE INTO THE DEVELOPMENT AND DOCUMENTATION ... bridge spans 60 feet, and has a width and height of 12 feet each The supports are rollers at one end, and pins at the other The trusses and cross members are to be constructed of 2L4X4’s, while the...

Ngày tải lên: 06/09/2012, 15:56

... unmatched in terms of ease -of- use and productivity Creation and modification of the model, execution of the analysis, and checking and optimization of the design, and production of the output are ... well as all of the settings described herein, can be considered to be part of the model Output and Display Definitions The definition of the SAP2000 model and the results of analysis and design ... The design of steel and aluminum frame members features initial member sizing and iterative optimization The design of concrete frame members includes the calculation of the amount of reinforcing...

Ngày tải lên: 01/04/2014, 03:20

... fractal dynamics and local dynamic stability of treadmill walking Journal of NeuroEngineering and Rehabilitation 2011 8:12 Submit your next manuscript to BioMed Central and take full advantage of: ... neuromuscular control of stability during human locomotion [8,32,36,55] The results of the present study showed that treadmill modified fractal dynamics (a) and local dynamic stability (l*) of the gait, ... fractal dynamics ML, V and AP stand for respectively Medio-Lateral, Vertical and Antero-posterior Significant correlation are bold printed (p < 0.05) Page of 13 Terrier and Dériaz Journal of NeuroEngineering...

Ngày tải lên: 19/06/2014, 08:20

... seminegative, and semipositive definite matrix P Journal of Inequalities and Applications Exponential Stabilization of a Class of Uncertain Nonlinear System This section addresses the exponential stability ... problem of a class of uncertain nonlinear systems by means of periodically intermittent control Based on Lyapunov function approach, several stability criteria have been given in terms of a set of ... delays and nonlinear perturbations was proposed Motivated by the aforementioned discussion, in this paper, we investigate the problem of exponential stabilization of a class of uncertain nonlinear...

Ngày tải lên: 21/06/2014, 06:20

... Precession and lean angle of the wheel respectively tilt angle between the link l1 and za -axis of the flywheel Spin angles of the wheel and flywheel respectively Angle between link l1 and xb -axis of ... yaw and roll dynamics are highly coupled, Figure 1.1: Example of Gyroscopic Effect imposing new challenges on the control and navigation of the robot The nature of the system is nonholonomic, nonlinear ... [39] are two of few examples where dynamic stability is achieved by exploiting the motion of the system Bicycle, motorcycle etc are some of the practical machines where dynamic stability is exploited...

Ngày tải lên: 14/09/2015, 08:37

... the Gyrobot Radius of the Gyrobot wheel Radius of the flywheel Moment of inertia of the wheel about axes Moment of inertia of the flywheel about axes Friction coefficient in yaw and pitch direction ... Lagrange multiplier 101 4.2.4 Dynamic Model of GYROBOT Taking derivatives, both in time and space, of the Lagrangian of Equation 4.15, a set of equations that includes Asj and λs is obtained The coefficients ... roll and yaw dynamics of the Gyrobot, i.e., β and α, are determined by the ˙ Equations 4.33 and 4.34, whereas the rotational speed of the wheel (Ω) determined by Equation 4.35 is independent of...

Ngày tải lên: 14/09/2015, 08:37

... exponential stability and the stability of numerical methods of dynamic systems relate the stability domains of scalar equations Therefore, it is meaningful to investigate the behavior of the stability ... Chyan, Du and Linh have investigated the data-dependence of the exponential stability and the stability radii for linear time-varying DAEs of index and with respect to only the right-hand side ... to a convergent sequence of time scales This is a preparation for investigation of the data-dependence of the exponential stability and the stability radii for implicit dynamic equations in next...

Ngày tải lên: 12/10/2015, 10:31

... MODELING AND ANALYSIS OF FIXTURING DYNAMIC STABILITY IN MACHINING 22 3.1 Problem Formulation and Approach 23 3.2 Criteria for Fixturing Dynamic Stability 25 v 3.3 The Dynamic ... Rand, rand Generators of random numbers between and Rf Tip radius of a fixture element Rw Local radius of workpiece surface at a fixture-workpiece contact rA / G Displacement vector from C.G of ... Second, models and approaches for simulation of fixture-workpiece dynamics and analysis of fixturing dynamic stability are experimentally validated Good agreement between model outputs and measurements...

Ngày tải lên: 10/12/2016, 15:33

... the nonlinear dynamic analysis and vibration of shear deformable eccentrically stiffened S-FGM cylindrical panels Duc and Cong [21] studied the nonlinear dynamic response of imperfect FGM plates, ... Effect of b / h on nonlinear dynamic response of ES-FGM plate (T- D, ∆T = const ) Fig Effect of b / h on nonlinear dynamic response of ES-FGM plate in case (TID, ∆T = ∆T ( z ) ) Fig Effect of b/h ... studied the nonlinear free and forced vibration analysis of circular functionally graded plates Alijani et al [5] and Chorfi and Houmat [6] studied the nonlinear vibration response of functionally...

Ngày tải lên: 11/12/2017, 21:27