scholarly journals Energy Harvesting of a Magnetostrictive Beam Model Based on Galfenol Alloy

2017 ◽  
Author(s):  
Marek Borowiec ◽  
Arkadiusz Syta ◽  
Grzegorz Litak
Keyword(s):  
Energy Harvesting ◽  
Beam Model ◽  
Model Based

Mathematical Models for Model-Based Control in Offshore Pipelay Operations

2009 ◽  
Author(s):  
Gullik A. Jensen ◽  
Thor I. Fossen
Keyword(s):  
Mathematical Models ◽  
Dynamic Models ◽  
Controller Design ◽  
Computational Time ◽  
Beam Model ◽  
Time Dynamic ◽  
Model Based ◽  
On Line ◽  
Stability And Accuracy ◽  
Control Application

This paper considers mathematical models for model-based controller design in offshore pipelay operations. Three classes of models for control design are discussed, real-world models suitable for controller design verification, controller and observer models which are used on-line in the control system implementation. The control application place requirements on the model with respect to the computational time, dynamic behavior, stability and accuracy. Models such as the beam model, two catenary models, as well as general finite element (FE) models obtained from computer programs were not able to meet all of the requirements, and two recent dynamic models designed for control are presented, which bridge the gap between the simple analytical and more complex FE models. For completeness, modeling of the pipelay vessel, stinger and roller interaction, soil and seabed interaction and environmental loads are discussed.

scholarly journals A piezoelectric beam model with geometric, material and damping nonlinearities for energy harvesting

2020 ◽  
Vol 29 (9) ◽  
pp. 095009
Author(s):  
Sebastián P Machado ◽  
Mariano Febbo ◽  
Claudio D Gatti ◽  
Santiago M Osinaga
Keyword(s):  
Energy Harvesting ◽  
Beam Model ◽  
Piezoelectric Beam

Critical Comparison of Bresse–Timoshenko Beam Theories for Parametric Instability in the Presence of Pulsating Load

2019 ◽  
Vol 19 (02) ◽  
pp. 1950006 ◽  
Author(s):  
Isaac Elishakoff ◽  
Florian Hache ◽  
Noël Challamel
Keyword(s):  
Slenderness Ratio ◽  
Parametric Instability ◽  
Beam Model ◽  
Timoshenko Model ◽  
Frequency Space ◽  
Model Based ◽  
Load Frequency ◽  
Compressive Loads ◽  
Euler Model ◽  
Shear Beam

In this paper, we investigate parametric instability of Bresse–Timoshenko columns subjected to periodic pulsating compressive loads. The results are derived from three theories, namely the Bernoulli–Euler model for thin beams and two versions of the Bresse–Timoshenko model valid for thick beams: The truncated Bresse–Timoshenko model and the Bresse–Timoshenko model based on slope inertia. The truncated Bresse–Timoshenko model has been derived from asymptotic analysis, whereas the Bresse–Timoshenko model based on slope inertia is an alternative shear beam model supported by variational arguments. These models both take into account the rotary inertia and the shear effect. Simple supported boundary conditions are considered, so that the time-dependent deflection solution can be decomposed into trigonometric spatial functions. The instability domain in the load–frequency space is analytically characterized from a Meissner-type parametric equation. For small slenderness ratio, these last two Bresse–Timoshenko models coincide but for much higher slenderness ratio, the parametric instability regions in the load–frequency space shift to the left and widen them as compared to the Bernoulli–Euler model. The importance of these effects differs between the models.

Model-based design of piezoelectric energy harvesting systems

2006 ◽  
Author(s):  
Jens Twiefel ◽  
Björn Richter ◽  
Tobias Hemsel ◽  
Jörg Wallaschek
Keyword(s):  
Energy Harvesting ◽  
Piezoelectric Energy Harvesting ◽  
Model Based ◽  
Piezoelectric Energy ◽  
Harvesting Systems

Polysilicon nano-beam model based on modified couple stress and Eringen’s nonlocal elasticity theories

2014 ◽  
Vol 63 ◽  
pp. 223-228 ◽  
Author(s):  
Ehsan Maani Miandoab ◽  
Hossein Nejat Pishkenari ◽  
Aghil Yousefi-Koma ◽  
Hamid Hoorzad
Keyword(s):  
Nonlocal Elasticity ◽  
Couple Stress ◽  
Beam Model ◽  
Model Based ◽  
Modified Couple Stress
Sign in / Sign up

Export Citation Format

Share Document