Topic
Deflection (engineering)
About: Deflection (engineering) is a research topic. Over the lifetime, 30862 publications have been published within this topic receiving 298849 citations.
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TL;DR: In this article, the elastic modulus of silver nanowires suspended across silicon microchannels was investigated using digital pulsed force mode (DPFM) atomic force microscopy through coincident imaging and force profiling.
Abstract: Nanomechanical bending behavior and elastic modulus of silver nanowires (65–140nm∅) suspended across silicon microchannels were investigated using digital pulsed force mode (DPFM) atomic force microscopy through coincident imaging and force profiling. Deflection profiles analyzed off-line demonstrate the role of bending nanowire shape and symmetry in experimentally determining boundary conditions, eliminating the need to rely on isolated midpoint bending measurements and the usual assumptions for supported-end behavior. Elastic moduli for as-prepared silver nanowires ranged from 80.4±5.3to96.4±12.8GPa, which met or exceeded the literature values for bulk silver. The calculated moduli were based on classic modeling, both with one-dimensional analytical solutions and three-dimensional finite element analysis. Modeling results indicate that the classic models are accurate as long as the boundary conditions are not arbitrarily assumed but directly confirmed by data analysis. DPFM also facilitated the experime...
107 citations
Patent•
23 Jul 2002
TL;DR: In this article, a flexible surface on which formed deflection sensors detect the deflection of the surface is used to yield information regarding the locations and magnitudes of forces deflecting the surface.
Abstract: An input device has a flexible surface on which are formed deflection sensors. The flexible surface can be deformed against an adjacent resilient layer. The deflection sensors detect the deflection of the surface. Electronic circuits for processing signals from the deflection sensors to yield information regarding the locations and magnitudes of forces deflecting the surface may be deposited all, or in part on the flexible surface. The input device may be combined with a display to yield a touch-sensitive display suitable for use in a wide range of applications.
107 citations
TL;DR: In this paper, an actuation system for a prosthetic arm that mimics the ability of antagonistic muscles in biological systems to modulate the stiffness and position of a joint is presented.
107 citations
TL;DR: In this paper, the linear equations of spatial motion for a system of two rigid masses connected by a chain with an arbitrary number of massless beams and controlled joint rotations were developed.
Abstract: The lumping approximation used frequently for dynamic analysis of distributed parameter systems is facilitated for a class of flexible systems by a technique using 4 × 4 coordinate transformation matrices to account for the deflection of elastic elements under load. This approach is used to develop the linear equations of spatial motion for a system of two rigid masses connected by a chain with an arbitrary number of massless beams and controlled joint rotations.
107 citations
TL;DR: In this article, a review of shape sensing methodologies available in the open literature and of the different applications is provided, and an experimental comparative study is presented among the main approaches in order to highlight their relative merits in presence of uncertainties affecting real applications.
106 citations