Results 21 to 30 of about 88,667 (317)
Calculation method for natural frequency of rotors considering load distribution in stepped parts
Nihon Kikai Gakkai ronbunshu, 2022 To improve the product performance of turbomachinery and ensure vibration reliability, we propose a method for predicting natural frequencies that considers the decrease in the stiffness of the rotor stepped part.
Kazuyuki YAMAGUCHI +2 more
doaj +1 more source
Smart machines with flexible rotors
Mechanical Systems and Signal Processing, 2009 Abstract The concept of smart machinery is of current interest. Several technologies are relevant in this quest including magnetic bearings, shape memory alloys (SMA) and piezo-electric activation. Recently, a smart bearing pedestal was proposed based on SMAs and elastomeric O-rings.
openaire +3 more sources
Modelling of a Flexible Manoeuvring System Using ANFIS Techniques [PDF]
, 2010 The increased utilization of flexible structure systems, such as flexible manipulators and flexible aircraft in various applications, has been motivated by the requirements of industrial automation in recent years.
Bin Zaidan, Martha Arbayani +2 more
core +1 more source
Electroactive Metal–Organic Frameworks for Electrocatalysis
Advanced Functional Materials, EarlyView.Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska +7 more
wiley +1 more source
Chinese Journal of Mechanical EngineeringUnbalanced force produced by the unbalanced mass will affect vibrations of rotor systems, which probably results in the components failures of rotating machinery.
Yajun Xu +3 more
doaj +1 more source
International Journal of Rotating Machinery, 2017 With the ever-increasing requirement for the thrust to weight ratio, the rotational speed of modern aeroengine is increasingly improved; thus most of the aeroengine rotor is flexible.
Zheng Longxi +2 more
doaj +1 more source
Balancing of Flexible Rotors by using Flexible Bearing Pedestals
Transactions of the Japan Society of Mechanical Engineers, 1970 In this paper, the balancing of flexible rotors by using flexible bearing pedestals is discussed. The rotor systems having flexible bearing pedestals are analyzed and the relations between the natural frequency of a pedestal system and that of the whole system are shown in a nondimensional form.
Takuzo IWATSUBO, Ryoji KAWAI
openaire +2 more sources
Modeling and analysis of nonlinear rotordynamics due to higher order deformations in bending [PDF]
, 2011 A mathematical model incorporating the higher order deformations in bending is devel- oped and analyzed to investigate the nonlinear dynamics of rotors. The rotor system con- sidered for the present work consists of a flexible shaft and a rigid disk. The
Berlioz, Alain +2 more
core +3 more sources
Photoswitching Conduction in Framework Materials
Advanced Functional Materials, EarlyView.This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez +4 more
wiley +1 more source
Piezoceramics-based Devices for Active Balancing of Flexible Shafts [PDF]
, 2006 This paper focuses on vibration control of flexible shafts by means of rotorfixed piezoelectric materials. The target is to realize compact solutions for the suppression of problematic resonant vibration at so-called flexural critical speeds.
Boer, A. de, Sloetjes, P.J.
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