... p  = 1, 2,…, P is number of point supports considered, and K pr , K p θ , and K pz are the stiffness constants per unit length of the point elastic support in the radial, circumferential, and transverse directions, respectively, R p and θ p are the radial...

.... 13 06 2013 05 02 2014 The present paper develops a nonlinear stiffness sensor for measuring cubic nonlinear elasticity. The measurement system consists of a vibrator with a control circuit. We apply linear-plus-nonlinear feedback to actuate the vibrator attached to a measurement object...

... the snubbing system. 08 10 2009 20 06 2009 30 01 2012 30 01 2012 elastic hysteresis elasticity friction parameter estimation vibration isolation snubbing elastomeric isolators Bouc-Wen hysteresis A mechanical snubber is a device designed to absorb relatively...

...Tomasz G. Zieliński; Marie-Annick Galland; Mohamed N. Ichchou Active sandwich panels are an example of smart noise attenuators and a realization of hybrid active-passive approach for the problem of broadband noise reduction. The panels are composed of thin elastic faceplates linked by the core...

.... With an open valve, the fluid in the tube is free to move in or out of the tube, so the stiffness is low. With a closed valve, however, the high bulk modulus fluid resists volume change and produces high axial stiffness. The equations of motion of an F 2 MC -mass system are derived using a 3D elasticity model...

... the longitudinal and transverse displacements are very small. For example, as computed in [( 24 )] for an axially moving elastic string, the ratio of the longitudinal displacement and the string length is in the magnitude of 10 −4 , and the ratio of the transverse displacement and the string length...

...B. Kang; C. H. Riedel In this paper, the coupling effects among three elastic wave modes, flexural, tangential, and radial shear, on the dynamics of a planar curved beam are assessed. Two sets of equations of motion governing the in-plane motion of a curved beam are derived, in a consistent manner...

...D. Wang A straight, slender beam with elastically restrained boundaries is investigated for optimal design of an intermediate elastic support with the minimum stiffness for the purpose of raising the fundamental frequency of the beam to a given value or to its upper bound. Based on the optimality...

.... 93 – 105 . 10.1115/1.3097294 Liu , W. , and Ewins , D. J. , 2000 , “ Substructure Synthesis via Elastic Media Part I: Joint Identification ,” Proceedings of the International Modal Analysis Conference , San Antonio, TX. Ren , Y. , 1992 , “ The Analysis and Identification...

... elasticity finite difference methods finite element analysis Navier-Stokes equations vortices While perhaps a more challenging design problem than the fixed wing variant, flapping wing micro air vehicles (MAVs) appear to be an attractive option over their fixed wing counterparts. In particular...

...% prestrain model 31 08 2009 07 06 2010 17 03 2011 17 03 2011 aerospace components boundary-value problems elasticity finite element analysis Laplace equations membranes oscillations remotely operated vehicles vibrations wind tunnels The use of small unmanned...

... 01 06 2010 01 03 2011 01 03 2011 dynamic response elasticity foundations Fredholm integral equations Biot’s theory layered poroelastic half-space pile groups transmission and reflection matrix (TRM) method Fredholm integral equation One of the primary purposes...

...Lixiang Yang; Yung-Yu Chen; Sheng-Tao John Yu This paper reports an extension of the space-time conservation element and solution element (CESE) method to simulate stress waves in elastic solids of hexagonal symmetry. The governing equations include the equation of motion and the constitutive...

... of the energy harvester as functions of incident wind speed. 17 02 2010 23 06 2010 26 01 2011 26 01 2011 aerodynamics elasticity energy harvesting piezoelectric devices vibrations Several recent studies have explored the possibility of using piezoelectric materials...

... by combining flow excitation with harmonic base excitation. Hence, piezoaeroelastic evolution can be investigated in frequency domain for different airflow speeds and electrical boundary conditions. 22 01 2010 02 07 2010 08 12 2010 08 12 2010 aerodynamics damping elasticity...

... for temperature changes of 0 deg, 20 deg, and 50 deg. The onset of instability varies around 4% between constant temperature and 50 deg of change. System specifications Geometric and material specifications Rotor length (mm) 200 Rotor radius (mm) 10 Modulus of elasticity (GPa) 205...

... structure. In this paper, a generalized Fourier method is presented for the in-plane vibration analysis of rectangular plates with any number of elastic point supports along the edges. Displacement constraints or rigid point supports can be considered as the special case when the stiffnesses...

... 14 04 2010 14 04 2010 damping elasticity vibration control Since the dynamic vibration absorber (DVA) was proposed by Ormondroyd and den Hartog ( 1 ) about a century ago, there has been much research on this topic. It has often been modeled as a translational single-degree...

... rating and its type of reinforcement. 23 12 2008 12 08 2009 18 03 2010 18 03 2010 elastic moduli elasticity hoses impedance matrix mechanical variables measurement shapes (structures) Flexible hoses have an important effect on the dynamic performance and noise...

... of piezoelectric sandwich plates shows increased amplitude of vibrations. 11 08 2008 26 11 2009 16 03 2010 16 03 2010 elasticity laminates Newton-Raphson method nonlinear acoustics piezoelectric materials plates (structures) polynomials structural acoustics vibrations...