نتایج جستجو برای: axial ratcheting
تعداد نتایج: 47989 فیلتر نتایج به سال:
We have developed an interactive computer-aided design program that supports the mechanical design of devices fabricated in surface micro-machining processes. The program automates kinematic analysis via a novel configuration space computation code, performs real-time simulation and kinematic tolerance analysis, and supports kinematic synthesis. Designers can visualize system function under a r...
A B S T R A C T Recently, various methods have been proposed to assess the risk of rolling contact fatigue failure by Ekberg, Kabo and Andersson, and in particular, the Dang Van multiaxial fatigue criterion has been suggested in a simple approximate formulation. In this note, it is found that the approximation implied can be very significant; the calculation is improved and corrected, and focus...
The Paris Agreement rests on voluntary emissions reduction pledges but does not mandate that are sufficiently ambitious to collectively limit warming acceptable levels. Instead, it relies the “ratcheting mechanism” of Global Stocktake. As world falls further from trajectories compatible with Agreement, a safe and just future increased global effort. This Voices asks: what is needed for Stocktak...
Axial length (AL) is a significant indicator of eyeball development, but reports on the overall status of axial development in congenital cataract (CC) patients and its relationship with patient demographics, such as age, sex, and laterality, are rare. We prospectively investigated the AL of 1,586 patients ≤ 18 years old and undergoing cataract surgery in China from January 2005 to December 201...
Motivated by recent experiments on the hovering of passive bodies, we demonstrate how a simple shape-changing body can hover or ascend in an oscillating background flow. We study this ratcheting effect through numerical simulations of the two-dimensional Navier–Stokes equations at intermediate Reynolds number. This effect could describe a viable means of locomotion or transport in such environm...
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