Controller design and stability analysis of Timoshenko beam with input delay
Journal of Hebei University of Science and Technology, 2018 In order to study the influence of input time delay on the stability of Timoshenko beam system and stabilize the Timoshenko beam system with input delay and load, by using the Backstepping method, a new controller is designed to compensate for the input ...
Rumeng HAN, Dongyi LIU
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Vibration characteristics of axially loaded tapered Timoshenko beams made of functionally graded materials by the power series method [PDF]
Numerical 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
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Modeling an elastic beam with piezoelectric patches by including magnetic effects
, 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.
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Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots
Advanced 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
Comparative Spectral Analysis of Flexible Structure Models: the Euler-Bernoulli Beam model, the Rayleigh Beam model, and the Timoshenko Beam Model [PDF]
, 2017 We derive herein approximate spectra for three dierent models of transversely vibrating, beams. Each model consists of a system of partial dierential equations (PDEs) with various, boundary conditions.
Nguyen, Anhhong Rose
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Stability of Timoshenko systems with past history
Journal of Mathematical Analysis and Applications, 2008 The paper deals with linear one-dimensional integro-differential vibrating systems of the Timoshenko type with past history acting only in one equation. The authors show that the dissipation given by the history term is strong enough to produce the exponential stability of the considered systems if and only if the equations have the same wave speeds ...
Muñoz Rivera, Jaime E. +1 more
openaire +2 more sources
Numerical Modeling of Photothermal Self‐Excited Composite Oscillators
Advanced Robotics Research, EarlyView.We present a numerical framework for simulating photothermal self‐excited oscillations. The driving mechanism is elucidated by highlighting the roles of inertia and overshoot, as well as the phase lag between the thermal moment and the oscillation angle, which together construct the feedback loop between the system state and the environmental stimulus.
Zixiao Liu +6 more
wiley +1 more source
Dynamic Stiffness Matrix for a Beam Element with Shear Deformation
Shock and Vibration, 1995 A method for calculating the dynamic transfer and stiffness matrices for a straight Timoshenko shear beam is presented. The method is applicable to beams with arbitrarily shaped cross sections and places no restrictions on the orientation of the element ...
Walter D. Pilkey, Levent Kitiş
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Automated Computation of Autonomous Spectral Submanifolds for Nonlinear Modal Analysis
, 2018 We discuss an automated computational methodology for computing two-dimensional spectral submanifolds (SSMs) in autonomous nonlinear mechanical systems of arbitrary degrees of freedom.
Haller, George +2 more
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Robotic Materials With Bioinspired Microstructures for High Sensitivity and Fast Actuation
Advanced Science, EarlyView.In the review paper, design rationale and approaches for bioinspired sensors and actuators in robotics applications are presented. These bioinspired microstructure strategies implemented in both can improve the performance in several ways. Also, recent ideas and innovations that embed robotic materials with logic and computation with it are part of the
Sakshi Sakshi +4 more
wiley +1 more source