Spatial-frequency adaptation and grating discrimination: predictions of a line-element model

1984 ◽  
Vol 1 (11) ◽  
pp. 1091 ◽  
Author(s):  
Hugh R. Wilson ◽  
David Regan
Keyword(s):  
Spatial Frequency ◽  
Line Element ◽  
Element Model ◽  
Frequency Adaptation

An action spectrum for spatial-frequency adaptation

1982 ◽  
Vol 22 (2) ◽  
pp. 235-246 ◽  
Author(s):  
Dan J. Swift ◽  
Robert A. Smith
Keyword(s):  
Spatial Frequency ◽  
Action Spectrum ◽  
Frequency Adaptation

The effects of spatial frequency adaptation on human evoked potentials

1976 ◽  
Vol 16 (5) ◽  
pp. 477-479 ◽  
Author(s):  
Luciano Mecacci ◽  
Donatella Spinelli
Keyword(s):  
Spatial Frequency ◽  
Evoked Potentials ◽  
Frequency Adaptation

Perceptual spatial frequency — Orientation surface: Psychophysics and line element theory

1989 ◽  
Vol 60 (4) ◽  
pp. 285-295 ◽  
Author(s):  
Bernhard Treutwein ◽  
I. Rentschler ◽  
T. Caelli
Keyword(s):  
Spatial Frequency ◽  
Line Element ◽  
Element Theory

Circular-Hinge Line Element for Finite Element Analysis of Compliant Mechanisms

2005 ◽  
Vol 127 (4) ◽  
pp. 766-773 ◽  
Author(s):  
Nicolae Lobontiu ◽  
Ephrahim Garcia
Keyword(s):  
Finite Element ◽  
Line Element ◽  
Compliant Mechanisms ◽  
Rectangular Cross Section ◽  
Constant Width ◽  
Element Model ◽  
Element Analysis ◽  
Finite Element Software ◽  
Total Potential ◽  
Six Degree Of Freedom

A three-node six degree-of-freedom per-node line element that is sensitive to axial, bending, and torsional loading is introduced to model single-axis right circular hinges of constant width that are utilized in compliant mechanisms. The Timoshenko model is applied for bending because this particular configuration is virtually short, and provisions are taken that the element is shear-locking free. The Saint Venant theory, which includes warping, is utilized to model torsion of the variable rectangular cross-section circular hinge. The principle of minimum total potential energy is employed to formulate the elemental stiffness and mass matrices, as well as the elemental nodal vector. Static force deflection and modal simulation that are performed based on this finite element model produce results that are in agreement with simulation by commercially available finite element software. The three-node line element is also compared to an analytical model in terms of stiffness and the results are again concurring.

Sign in / Sign up

Export Citation Format

Share Document