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 free vibration of a flexible thin plate placed into a circular hole and elastically connected to the rigid bottom slab of a circular cylindrical container filled with fluid having a free surface is studied.
61 citations
TL;DR: Stainless steel Canal Master U instruments met or exceeded the maximum torque at failure standards in all sizes except 50, whereas the nickel titanium instruments met the standards inall sizes except 45 and 50.
61 citations
TL;DR: In this paper, an approach for the solution of the free vibration problem of systems comprised of straight and/or curved beam components is presented, where the Rayleigh-Ritz method is used, and the choice of the deflection functions is simplified through the introduction of artificial springs at the joints between the components.
61 citations
TL;DR: In this article, a 3D nonlinear finite-element analysis is used to study the behavior of soil-nailed walls constructed under a bridge abutment built on piles.
Abstract: A three-dimensional (3D) nonlinear finite-element analysis is used to study the behavior of soil-nailed walls constructed under a bridge abutment built on piles. The numerical model simulates the piles and the nails with beam elements, the abutment and the pile cap with solid 3D brick elastic elements. The soil model used is a modified hyperbolic model with unloading hysteresis. The complete sequence of construction is simulated including the excavation of the embankment slope under the bridge in front of the abutment and the placement of the nails. The numerical model is calibrated against an instrumented case history. Then a parametric study is conducted. The results give information on the effect of the excavation and nail placement on the following: axial load and bending moment in the piles and load in the nails and wall deflections. The results are used to suggest design guidelines.
60 citations
TL;DR: The results show that the nonlinear detector response might influence many AFM studies where soft or short cantilevers are used and suggest a rule of thumb for which cantilever one should use under different experimental conditions.
Abstract: In an atomic force microscope (AFM), the force is normally sensed by measuring the deflection of a cantilever by an optical lever technique. Experimental results show a nonlinear relationship between the detected signal and the actual deflection of the cantilever, which is widely ignored in literature. In this study we have designed experiments to investigate different possible reasons for this nonlinearity and compared the experimental findings with calculations. It is commonly assumed that this nonlinearity only causes problems for extremely large cantilever deflections. However, our results show that the nonlinear detector response might influence many AFM studies where soft or short cantilevers are used. Based on our analysis we draw conclusions of the main reason for the nonlinearity and suggest a rule of thumb for which cantilevers one should use under different experimental conditions.
60 citations