Results 11 to 20 of about 185,504 (288)
Nonlinear Modeling of Cables with Flexural Stiffness [PDF]
Mathematical Problems in Engineering, 2008 A geometrically exact formulation of cables suffering axis stretching and flexural curvature is presented. The dynamical formulation is based on nonlinearly viscoelastic constitutive laws for the tension and bending moment with the additional constitutive nonlinearity accounting for the no‐compression condition.
LACARBONARA, Walter, Arnaud Pacitti
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Tailoring Strongly Nonlinear Negative Stiffness [PDF]
Journal of Mechanical Design, 2013 Negative, nonlinear stiffness elements have been recently designed as configurations of pairs or groups of linear springs. We propose a new design of such a system by using a single linear spring with its moving end rolling on a path described by an equation of varying complexity.
F. Liu +4 more
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Nonlinear behavior of quasi-zero stiffness nonlinear torsional vibration isolator
Nonlinear Dynamics, 2023 Abstract This paper researches the nonlinear behavior of a nonlinear torsional vibration isolator (NTVI) which is composed of flexible rod element and electromagnetic element. And the NTVI has a quasi-zero stiffness (QZS) characteristic. Firstly, a statics model of the QZS-NTVI is established and the effects of geometric parameters on the QZS ...
Jiawei Xu, Jianping Jing
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Stiffness Estimation and Nonlinear Control of Robots with Variable Stiffness Actuation [PDF]
IFAC Proceedings Volumes, 2011 Abstract We consider the problem of estimating on line the nonlinear stiffness of flexible transmissions in robots with variable stiffness actuation in agonistic-antagonistic configuration. Stiffness estimation is obtained using a dynamic residual that provides a filtered version of the unmeasured flexibility torques, combining it with a recursive ...
DE LUCA, Alessandro, FLACCO, FABRIZIO
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Nonlinearity of muscle stiffness
Theoretical and Applied Mechanics Letters, 2012 AbstractIn this letter, a comparison between three types (two linear and one nonlinear) of models of skeletal muscle stiffness is shown. Results are compared with experimental data for biceps brachii in the case of muscle stretching and with the Hill equation for a biological muscle.
Awrejcewicz, Jan +2 more
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Mathematics, 2023 An on-line estimation technique of multiple-frequency oscillatory forces combined with the Hilbert–Huang transform for an important class of actively controlled, forced vibrating mechanical systems with nonlinear stiffness forces is proposed.
Francisco Beltran-Carbajal +5 more
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Linear parameter estimation for multi-degree-of-freedom nonlinear systems using nonlinear output frequency-response functions [PDF]
, 2006 The Volterra series approach has been widely used for the analysis of nonlinear systems. Based on the Volterra series, a novel concept named Nonlinear Output Frequency Response Functions (NOFRFs) was proposed by the authors.
Billings, S.A., Lang, Z.Q., Peng, Z.K.
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Application of nonlinear stiffness mechanism on energy harvesting from vortex-induced vibrations
Frontiers in Marine Science, 2023 This study investigates the potential of vortex-induced vibration (VIV) as a renewable energy source, achieved when fluid flow interacts with a bluff body, inducing self-sustained oscillations through vortex shedding in the wake.
Zhenguo Gao +4 more
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Nonlinear Stiffness Modeling Method for a Collaborative Robot
Jixie chuandong, 2021 A nonlinear stiffness modeling method for collaborative robots（Cobots） is proposed， which is combine the finite element analysis method （FEA） with the virtual joint method （VJM）.
Song Wang +4 more
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Applied Sciences, 2023 This article establishes a nonlinear flutter system for a long-span suspension bridge, aiming to analyze its supercritical flutter response under the influence of nonlinear aerodynamic self-excited force.
Jieshan Liu, Fan Wang, Yang Yang
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