نتایج جستجو برای: doubly curved

تعداد نتایج: 31296  

2016
S. C. Kattimani

This article deals with the analysis of active constrained layer damping (ACLD) of smart multiferroic or magnetoelectro-elastic doubly curved shells. The kinematics of deformations of the multiferroic doubly curved shell is described by a layer-wise shear deformation theory. A three-dimensional finite element model of multiferroic shells has been developed taking into account the electro-elasti...

1998
Ingrid M.L.C. Vogels Astrid M.L. Kappers Jan J. Koenderink

Curvature discrimination of hand-sized doubly curved surfaces by means of static touch was investigated. Stimuli consisted of hyperbolical, cylindrical, elliptical and spherical surfaces of various curvatures. In the ®rst experiment subjects had to discriminate the curvature along a speci®ed orientation (the discrimination orientation) of a doubly curved surface from a ̄at surface. The curvatur...

Journal: :Acta psychologica 1999
I M Vogels A M Kappers J J Koenderink

Curvature discrimination of hand-sized doubly curved surfaces by means of static touch was investigated. Stimuli consisted of hyperbolical, cylindrical, elliptical and spherical surfaces of various curvatures. In the first experiment subjects had to discriminate the curvature along a specified orientation (the discrimination orientation) of a doubly curved surface from a flat surface. The curva...

Journal: :Bioinspiration & biomimetics 2017
Gundula Schieber Larissa Born Paavo Bergmann Axel Hannes Körner Anja Mader Saman Saffarian Oliver Betz Markus Milwich Goetz Gresser Jan Knippers

Hingeless shading systems inspired by nature are increasingly the focus of architectural research. In contrast to traditional systems, these compliant mechanisms can reduce the amount of maintenance-intensive parts and can easily be adapted to irregular, doubly curved, facade geometries. Previous mechanisms rely merely on the reversible material deformation of composite structures with almost h...

2006
Chenggang Li Sanjeev Bedi Stephen Mann

Typically flank milling is used to machine ruled surfaces. In this paper, a method of designing doubly curved NURBS surfaces for flank milling using the least squares method is given. In this method, grazing points generated by the Bedi et al. [4] tool positioning method are used as sample points. The user defines the degree and the number of control points along two parametric directions of th...

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