Results 21 to 30 of about 661 (213)
Research on Design and Optimization of Micro-Hole Aerostatic Bearing in Vacuum Environment
LubricantsMicro-hole aerostatic bearings are important components in micro-low-gravity simulation of aerospace equipment, and the accuracy of micro-low-gravity simulation tests is affected by them.
Guozhen Fan +10 more
doaj +2 more sources
Modelling and Simulation of Aerostatic Thrust Bearings [PDF]
IEEE Access, 2020 This paper demonstrates the modelling and simulation comparison of the static characteristics of a porous, orifice, and multiple type aerostatic thrust bearings on the basis of load-carrying capacity(LCC) and stiffness. The equations Navier-Stokes (N-S) are used to solve the internal distribution of pressure in computational fluid dynamics(CFD ...
Muhammad Punhal Sahto +5 more
openaire +3 more sources
Characteristics of Air Resistance in Aerostatic Bearings [PDF]
Applied Sciences, 2021 The definition of air resistance is nonuniform when analyzing the bearing capacity, stiffness, and stability of an orifice throttling aerostatic restrictor. In this study, a capillary tube similar to the inlet section of an aerostatic restrictor is used as the research object, and the Bernoulli equation under adiabatic conditions is established ...
Jianlong Yin +5 more
openaire +2 more sources
Primary Gas Pressure Standard Passes Next Stress Test
Annalen der Physik, Volume 534, Issue 11, November 2022., 2022 With doubled sensitivity, the thermodynamic gas‐pressure standard based on temperature and electrical measurements as well as ab initio calculations of the thermophysical properties of helium is compared to the most accurate mechanical pressure standard. This stress test for theory and experiment is once again successful.
Christof Gaiser +2 more
wiley +1 more source
International Journal of Mechanical System Dynamics, Volume 2, Issue 3, Page 290-307, September 2022., 2022 Abstract The dynamics of an ultra‐precision machine tool determines the precision of the machined surface. This study aims to propose an effective method to model and analyze the dynamics of an ultra‐precision fly‐cutting machine tool. First, the dynamic model of the machine tool considering the deformations of the cutter head and the lathe head is ...
Hanjing Lu +6 more
wiley +1 more source
Lubricants, 2023 Aerostatic bearings are crucial support components in ultra−precision manufacturing equipment. However, improvements in the load−carrying capability (LCC) of aerostatic bearings often lead to higher intensity nano−vibrations.
Puliang Yu +4 more
doaj +1 more source
Air and atmosphere studies: Enlightenment, phenomenology and ecocriticism
Literature Compass, Volume 19, Issue 1-2, February 2022., 2022 Abstract This essay examines the treatment of air and atmosphere in literary scholarship of the late 17th‐ to mid‐19th‐century periods, from the first, early Enlightenment discovery of the air's chemical structure and the coining of the word ‘atmosphere’, to the dawning of Victorian industrial pollution.
Rowan Rose Boyson
wiley +1 more source
International Journal of Mechanical System Dynamics, Volume 1, Issue 1, Page 35-51, September 2021., 2021 Abstract As one of the most advanced and precise equipment in the world, a photolithography scanner is able to fabricate nanometer‐scale devices on a chip. To realize such a small dimension, the optical system is the fundamental, but the mechanical system often becomes the bottleneck. In the photolithography, the exposure is a dynamic process.
Yi Song +4 more
wiley +1 more source
Gas‐Lubricated Vibration‐Based Adhesion for Robotics
Advanced Intelligent Systems, Volume 3, Issue 7, July 2021., 2021 This work presents a new adhesion technique that uses a vibrating flexible disk to generate high adhesive stresses with low lateral resistance to movement, currently a challenge for mobile robots. The adhesive performance is measured for disks of different geometries and a mobile robot is built that can support payloads ≈10x its weight while driving on
William P. Weston-Dawkes +5 more
wiley +1 more source
Shock and Vibration, 2020 In order to further study the performance of aerostatic bearing, an aerostatic bearing with a multihole integrated restrictor was proposed in this paper.
Zhi-wei Lu, Jun-an Zhang, Bo Liu
doaj +1 more source