Results 31 to 40 of about 30,312 (199)

A novel haptic model and environment for maxillofacial surgical operation planning and manipulation [PDF]

open access: yes, 2012
This paper presents a practical method and a new haptic model to support manipulations of bones and their segments during the planning of a surgical operation in a virtual environment using a haptic interface. To perform an effective dental surgery it is
Arnez, Victor   +7 more
core   +1 more source

Global stability for damped Timoshenko systems

open access: yesDiscrete & Continuous Dynamical Systems - A, 2003
A mixed problem for a nonlinear one-dimensional Timoshenko system is studied. In the special linear case, sufficient and necessary conditions are given which guarantee the exponential stability. In more general linear case, the polynomial decay and in the nonlinear case the exponential decay of small solutions are proved.
Muñoz Rivera, Jaime E., Racke, Reinhard
openaire   +3 more sources

Singular limit and long-time dynamics of Bresse systems

open access: yes, 2017
The Bresse system is a valid model for arched beams which reduces to the classical Timoshenko system when the arch curvature $\ell=0$. Our first result shows the Timoshenko system as a singular limit of the Bresse system as $\ell \to 0$.
Ma, To Fu, Monteiro, Rodrigo Nunes
core   +1 more source

On triply coupled vibrations of axially loaded thin-walled composite beams [PDF]

open access: yes, 2009
Free vibration of axially loaded thin-walled composite beams with arbitrary lay-ups is presented. This model is based on the classical lamination theory, and accounts for all the structural coupling coming from material anisotropy.
Banerjee   +32 more
core   +2 more sources

Sensing linear viscoelastic constitutive parameters with a Timoshenko beam on a multi-layer foundation: Modeling and simulation

open access: yesSensing and Bio-Sensing Research, 2015
We present a sensor model comprised of a Timoshenko beam coupled with a linear viscoelastic substrate via a distributed system of compliant elements. The system of governing equations includes the evolution of the kinematic descriptors of the Timoshenko ...
Javad Fattahi, Davide Spinello
doaj   +1 more source

Modeling an elastic beam with piezoelectric patches by including magnetic effects

open access: yes, 2014
Models for piezoelectric beams using Euler-Bernoulli small displacement theory predict the dynamics of slender beams at the low frequency accurately but are insufficient for beams vibrating at high frequencies or beams with low length-to-width aspect ...
Morris, K. A., Ozer, A. O.
core   +1 more source

On Stability of Hyperbolic Thermoelastic Reissner-Mindlin-Timoshenko Plates

open access: yes, 2013
In the present article, we consider a thermoelastic plate of Reissner-Mindlin-Timoshenko type with the hyperbolic heat conduction arising from Cattaneo's law. In the absense of any additional mechanical dissipations, the system is often not even strongly
Pokojovy, Michael
core   +1 more source

Energy decay for Timoshenko systems of memory type

open access: yesJournal of Differential Equations, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ammar-Khodja, F.   +3 more
openaire   +3 more sources

Vibration characteristics of axially loaded tapered Timoshenko beams made of functionally graded materials by the power series method [PDF]

open access: yesNumerical Methods in Civil Engineering, 2017
:In the present article, a semi-analytical technique to investigate free bending vibration behavior of axially functionally graded non-prismatic Timoshenko beam subjected to a point force at both ends is developed based on the power series expansions ...
M. Soltani
doaj   +1 more source

Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots

open access: yesAdvanced Robotics Research, EarlyView.
A new mechanical model of a tendon‐actuated helical extension spring joint in surgical robots is built using Cosserat rod theory. The model can implicitly handle the unknown contacts between adjacent coils and numerically predict spring shapes from straight to significantly bent under actuation forces.
Botian Sun   +3 more
wiley   +1 more source

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