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Formulas for natural frequency and mode shape
Robert D. Blevins,R. Plunkett +1 more
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The article was published on 1979-01-01 and is currently open access. It has received 2002 citations till now. The article focuses on the topics: Natural frequency & Normal mode.read more
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Environmental effects on the free vibration of curvilinear fibre composite laminates with cutouts
TL;DR: In this paper, the free vibration characteristics of curvilinear fiber composite laminates exposed to hygrothermal environment were studied and a 4-noded shear flexible quadrilateral plate element based on extended finite element approach was employed for the spatial discretization.
Journal ArticleDOI
Flexible multibody dynamic modeling of a floating wind turbine
TL;DR: In this article, a modeling approach for the nonlinear flexible dynamics simulation of a floating offshore wind turbine (FOWT) is presented, in which a floating platform is modeled as a six-degrees-of-freedom (6-DOF) rigid body subject to buoyancy, hydrodynamic and mooring loads.
Proceedings ArticleDOI
Manipulation with Tower Cranes Exhibiting Double-Pendulum Oscillations
William Singhose,Dooroo Kim +1 more
TL;DR: Data from these experiments show that operators performed manipulation tasks faster and safer when input shaping was utilized to reduce payload sway, and the teleoperation delays did not degrade the input shaping effectiveness.
Journal ArticleDOI
Time constant and lateral resonances of thermal vertical bimorph actuators
Harald Sehr,I S Tomlin,B Huang,Steve Beeby,Alan G. R. Evans,A Brunnschweiler,G. Ensell,C G J Schabmueller,Trevor Niblock +8 more
TL;DR: In this article, the authors measured the time constant describing the deflection response of the actuator to input pulses, ranging from 0.5 ms to 3.8 ms, depending on the dimensions of an actuator.
Proceedings ArticleDOI
Electro-mechanical impedance method for crack detection in metallic plates
Victor Giurgiutiu,Andrei Zagrai +1 more
TL;DR: In this paper, the E/M impedance (or admittance) spectrum is used to identify structural dynamics directly through in-situ active piezoelectric sensors on 2D structures.