Results 41 to 50 of about 249 (182)

Theoretical and Experimental Study on the Performance of Hermetic Diaphragm Squeeze Film Dampers for Gas-Lubricated Bearings

Chinese Journal of Mechanical Engineering
Low damping characteristics have always been a key sticking points in the development of gas bearings. The application of squeeze film dampers can significantly improve the damping performance of gas lubricated bearings.
Jianwei Wang, Haoxi Zhang, Shaocun Han, Hang Li, Peng Wang, Kai Feng   +5 more
doaj   +1 more source

An Improved Air Film Model for Studying the Tilt Characteristics of Aerostatic Thrust Bearings

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In this study, an improved mass‐spring model that treats the lubricating air film as distributed springs is proposed to calculate the static and dynamic angular stiffness of aerostatic thrust bearings. The proposed model refines the traditional mass‐spring model by introducing the spatially varying mechanical properties of the air film and the
Hui Zhuang, Jianguo Ding, Yu Chang
wiley   +1 more source

Study on the Oil Film Force with Unlimited Length Oil Film of the Sliding Bearing and the ERSFD with Bosses

Mathematics, 2022
The research background is the elastic ring squeeze film damper. Four contact pressure models were established by analyzing the structural characteristics and movement, combined with the sliding bearing theory, including structural parameters and ...
Guoying Pang, Shuqian Cao, Yushu Chen
doaj   +1 more source

Functionally Graded Nanofiber Interlayers for Hydrothermally Aged Glass/Epoxy Laminates: Mechanical Performance and Electromagnetic Attenuation

Polymer Composites, EarlyView.
Functionally graded Ag/Fe3O4‐loaded PAN nanofiber interlayers for improved mechanical performance and EMI attenuation in GFRP laminates. ABSTRACT Functionally graded Ag/Fe3O4‐loaded polyacrylonitrile (PAN) nanofiber interlayers were placed between selected glass fabric plies to improve interlaminar damage resistance in glass fiber‐reinforced polymer ...
Hasan Ulus, Mehmet Emin Çetin, Bertan Beylergil, Alp Oral Salman, Mürsel Ekrem, Hayrettin Düzcükoğlu   +5 more
wiley   +1 more source

Synthesis of Poly(Itaconate)s With High Monomer Conversion Applying Emulsion Polymerization

Journal of Polymer Science, Volume 63, Issue 6, Page 1284-1296, 15 March 2025.
Itaconic acid and its derivatives are a promising and bio‐based substitute for oil‐based polymers such as acrylates. In this study, the optimization of polymerization of itaconic acid esters is described by applying emulsion polymerization leading to high reaction conversions and low residual monomer contents. ABSTRACT Itaconic acid and its derivatives
S. Charlotte Fischer von Mollard, Nico Ueberschaar, Martin Schreiber, Frank Kamphuis, Stefan Zechel, Martin D. Hager   +5 more
wiley   +1 more source

Impact of Chitosan Incorporation on PBAT Composite: Thermal, Viscoelastic, Mechanical, and Morphological Properties

Journal of Applied Polymer Science, Volume 143, Issue 36, September 20, 2026.
The abstract explains the impact of various concentrations of chitosan on PBAT composite. Indeed, the composite is produced at increasing concentrations of chitosan (10%, 20%, and 30%). The decrease in the tensile strength with increased conc. of chitosan was recorded. Furthermore, the same impact was recorded for TGA analysis.
Siti Noorbaini Sarmin, Zoheb Karim, Mohammad Jawaid, Ahmad Safwan Ismail, Muhamad Haikal Hamdan   +4 more
wiley   +1 more source

Experimental Investigation of the Dynamic Response of Squeeze Film Dampers Made of Steel and Glass/Epoxy

Shock and Vibration, 2008
This work is devoted to the fabrication and investigation of the Squeeze Film Dampers (SFDs) which are widely used in many applications. This include the fabrication of a test rig and several dampers with different sizes and two different materials which
Waleed F. Faris, Asad A. Khalid, A. Albagul, Godem A. Ismail   +3 more
doaj   +1 more source

Effect of squeeze film damper geometry on damper performance.

, 1992
The Squeeze film damper has proved a useful means of eliminating instabilities and reducing vibration in rotor-bearing systems. Analyses for this problem generally assume parallel land dampers. In this thesis, the pressure distribution, the fluid film forces, and the stiffness and damping coefficients of variable land geometry narrow, circular orbit ...
openaire   +2 more sources

Structural characterization and optimum machining parameters of jute/carbon fibre hybrid reinforced epoxy composite laminates

Polymer International, Volume 75, Issue 9, Page 804-817, September 2026.
Hybrid jute/carbon epoxy laminates have better mechanical performance and less drilling damage by the use of optimized stacking sequence and machining parameters. Abstract Three composite laminate systems were produced using the standard hand lay‐up method: jute‐fibre‐reinforced polymer (JFRP), carbon‐fibre‐reinforced polymer (CFRP) and a hybrid of the
Paulraj Prabhu, Anbalagan Arunkumar, Nadir Ayrilmis, Vellingiri Suresh, Ram Subbiah, Emarose Shankar   +5 more
wiley   +1 more source

Dynamic Characteristics Analysis of a Large Wind Turbine Gearbox Supported by Journal Bearings Under Different Lubrication States

Wind Energy, Volume 29, Issue 9, September 2026.
ABSTRACT Due to their superior load density, planetary gear journal bearings (PGJB) are progressively replacing rolling element bearings in wind turbine gearboxes; therefore, accurately revealing the dynamic characteristics of drivetrains supported by these bearings under variable operating conditions is crucial for ensuring operational reliability ...
Pengcheng Jin, Hong Jiang, Jianxing Zhou, Yuliang Yang   +3 more
wiley   +1 more source