Two-dimensional dynamic model for composite laminates with embedded magnetostrictive materials

2015 ◽  
Vol 132 ◽  
pp. 737-745 ◽  
Author(s):  
S. Santapuri ◽  
J.J. Scheidler ◽  
M.J. Dapino
Keyword(s):  
Dynamic Model ◽  
Composite Laminates ◽  
Two Dimensional ◽  
Magnetostrictive Materials

A biomechanical analysis of switch stand operation using a two-dimensional dynamic model

1991 ◽  
Vol 24 (3-4) ◽  
pp. 257
Author(s):  
Maury Nussbaum ◽  
Don B. Chaffin ◽  
George Page ◽  
James Foulke ◽  
Charles Woolley
Keyword(s):  
Dynamic Model ◽  
Biomechanical Analysis ◽  
Two Dimensional

A Granular Dynamic Model for the Degradation of Material

2004 ◽  
Vol 126 (3) ◽  
pp. 606-614 ◽  
Author(s):  
N. Fillot ◽  
I. Iordanoff ◽  
Y. Berthier
Keyword(s):  
Dynamic Model ◽  
Normal Pressure ◽  
Two Dimensional ◽  
Third Body ◽  
Stable Layer ◽  
Sliding Speed ◽  
Particle Detachment ◽  
Physicochemical Interactions

The work presented here is a model of the degradation of a material (by particle detachment), based on a two dimensional granular dynamic model designed to study the flows of third body particles inside a contact. As the detached particles (third body) cannot exit the contact, the detachments stop after a certain time and a stable layer of third body can be seen. It is shown that the thickness of this stable layer depends both on the conditions applied (normal pressure and sliding speed) and the physicochemical interactions between the detached particles. Such investigations provide better understanding of the mechanism leading to the degradation of material.

Two-dimensional dynamic model of a copper sulphide ore bed

2003 ◽  
Vol 71 (1-2) ◽  
pp. 67-74 ◽  
Author(s):  
M Sidborn ◽  
J Casas ◽  
J Martı́nez ◽  
L Moreno
Keyword(s):  
Dynamic Model ◽  
Copper Sulphide ◽  
Two Dimensional ◽  
Sulphide Ore

scholarly journals Parametric structural modelling of fish bone active camber morphing aerofoils

2018 ◽  
Vol 29 (9) ◽  
pp. 2008-2026 ◽  
Author(s):  
Andres E Rivero ◽  
Paul M Weaver ◽  
Jonathan E Cooper ◽  
Benjamin KS Woods
Keyword(s):  
Analytical Model ◽  
Composite Laminates ◽  
Plate Theory ◽  
Ritz Method ◽  
Linear Equations ◽  
Variable Stiffness ◽  
Automated Analysis ◽  
Fish Bone ◽  
Two Dimensional ◽  
Wide Range

Camber morphing aerofoils have the potential to significantly improve the efficiency of fixed and rotary wing aircraft by providing significant lift control authority to a wing, at a lower drag penalty than traditional plain flaps. A rapid, mesh-independent and two-dimensional analytical model of the fish bone active camber concept is presented. Existing structural models of this concept are one-dimensional and isotropic and therefore unable to capture either material anisotropy or spanwise variations in loading/deformation. The proposed model addresses these shortcomings by being able to analyse composite laminates and solve for static two-dimensional displacement fields. Kirchhoff–Love plate theory, along with the Rayleigh–Ritz method, are used to capture the complex and variable stiffness nature of the fish bone active camber concept in a single system of linear equations. Results show errors between 0.5% and 8% for static deflections under representative uniform pressure loadings and applied actuation moments (except when transverse shear exists), compared to finite element method. The robustness, mesh-independence and analytical nature of this model, combined with a modular, parameter-driven geometry definition, facilitate a fast and automated analysis of a wide range of fish bone active camber concept configurations. This analytical model is therefore a powerful tool for use in trade studies, fluid–structure interaction and design optimisation.

scholarly journals Development of a two-dimensional dynamic model of the foot-ankle system exposed to vibration

2020 ◽  
Vol 99 ◽  
pp. 109547 ◽  
Author(s):  
D. Chadefaux ◽  
K. Goggins ◽  
C. Cazzaniga ◽  
P. Marzaroli ◽  
S. Marelli ◽  
...  
Keyword(s):  
Dynamic Model ◽  
Two Dimensional

Modeling and Grasp Stability Analysis for Object Manipulation by Soft Rolling Fingertips

2014 ◽  
Vol 11 (03) ◽  
pp. 1450020 ◽  
Author(s):  
John Fasoulas ◽  
Michael Sfakiotakis
Keyword(s):  
Stability Analysis ◽  
Dynamic Model ◽  
Object Manipulation ◽  
Kinematics And Dynamics ◽  
Control Law ◽  
Two Dimensional ◽  
Orientation Control ◽  
Grasp Stability ◽  
Different Types ◽  
General Dynamic

This paper presents a general dynamic model that describes the two-dimensional grasp by two robotic fingers with soft fingertips. We derive the system's kinematics and dynamics by incorporating rolling constraints that depend on the deformation and on the rolling distance characteristics of the fingertips' material. We analyze the grasp stability at equilibrium, and conclude that the rolling properties of the fingertips can play an important role in grasp stability, especially when the width of the grasped object is small compared to the radius of the tips. Subsequently, a controller, which is based on the fingertips' rolling properties, is proposed for stable grasping concurrent with object orientation control. We evaluate the dynamic model under the proposed control law by simulations and experiments that make use of two different types of soft fingertip materials, through which it is confirmed that the dynamic model can successfully capture the effect of the fingertips' deformation and their rolling distance characteristics. Finally, we use the dynamic model to demonstrate by simulations the significance of the fingertips' rolling properties in grasping thin objects.

Two-dimensional gas-dynamic model of laser ablation in an ambient gas

2000 ◽  
Vol 154-155 ◽  
pp. 66-72 ◽  
Author(s):  
A.V. Gusarov ◽  
A.G. Gnedovets ◽  
I. Smurov
Keyword(s):  
Laser Ablation ◽  
Dynamic Model ◽  
Two Dimensional ◽  
Gas Dynamic ◽  
Ambient Gas

Effects of Interleaves on Fracture of Laminated Composites: Part I—Analysis

1990 ◽  
Vol 57 (1) ◽  
pp. 168-174 ◽  
Author(s):  
A. K. Kaw ◽  
J. G. Goree
Keyword(s):  
Composite Laminates ◽  
Integral Transform ◽  
Singular Integral Equations ◽  
Fourier Integral ◽  
Elastic Media ◽  
Two Dimensional ◽  
Shear Moduli ◽  
Fourier Integral Transform ◽  
Shaped Crack ◽  
Symmetric Crack

The influence of placing interleaves between fiber-reinforced plies in multilayered composite laminates is investigated. The geometry of the composite is idealized as a two-dimensional, isotropic, linearly elastic media consisting of a damaged layer bonded between two half-planes and separated by thin interleaves of low extensional and shear moduli. The damage in the layer is taken in the form of a symmetric crack perpendicular to the interface. The case of an H-shaped crack in the form of a broken layer with delamination along the interface is also analyzed. Fourier integral transform techniques are used to develop the solutions in terms of singular integral equations.

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