Results 11 to 20 of about 609,404 (233)

Rolling contact fatigue of silicon nitride. [PDF]

open access: yes
Silicon Nitride has traditionally been used as rolling contact bearing material owing to its superior performance compared to bearing steels. Its successful application as a bearing element has led to the development of Silicon Nitride in other rolling ...
Wang, W.
core   +9 more sources

Comparison of 4-ball and 5-ball rolling contact fatigue tests on lubricated Si3N4/steel contact [PDF]

open access: yes, 2003
Accelerated four-ball and five-ball rolling tests were performed on HIPed Si3N4 ball samples (rough lapped with surface roughness value Ra0.08 μm and Rq0.118 μm) in fully lubricated condition.
Kang, J, Hadfield, M
core   +6 more sources

Some problems in hot rolling of al-alloys solved by the finite element method [PDF]

open access: yes
This thesis is focused on employing the finite element method (FEM) to simulate hot flat rolling process. The relevant work involves selecting a suitable constitutive equation, predicting the rolling load and roll torque, computing temperature changes ...
Duan, X.
core   +9 more sources

Further investigations and parametric analysis of microstructural alterations under rolling contact fatigue [PDF]

open access: yes, 2022
Bearing elements under rolling contact fatigue (RCF) exhibit microstructural features, known as white etching bands (WEBs) and dark etching regions (DERs).
Abdullah, U., Khan, Z.A.
core   +1 more source

Numerical calculation and mechanical mechanism analysis of ship parametric rolling

open access: yesZhongguo Jianchuan Yanjiu, 2020
[Objective] The parametric rolling is a special instability phenomenon of ship in the wave. The current research proves that the change of the stability parameter when the wave passes through the hull is the reason for the rolling motion of the hull,but ...
ZHU Jun   +5 more
doaj   +1 more source

A Simplified Mathematical Model for the Analysis of Varying Compliance Vibrations of a Rolling Bearing

open access: yesApplied Sciences, 2020
In this paper, a simplified approach in the analysis of the varying compliance vibrations of a rolling bearing is presented. This approach analyses the generation of vibrations in relation to two boundary positions of the inner ring support on an even ...
Radoslav Tomović
doaj   +1 more source

Mechanism and Characteristics of Global Varying Compliance Parametric Resonances in a Ball Bearing

open access: yesApplied Sciences, 2020
Varying compliance (VC) is an unavoidable form of parametric excitation in rolling bearings and can affect the stability and safety of the bearing and its supporting rotor system.
Zhiyong Zhang   +5 more
doaj   +1 more source

Contact Pressure Measurement System in Cross Wedge Rolling [PDF]

open access: yes, 2010
In the cross wedge rolling process (CWR), plastic deformation is geared by a driving torque transmitted by friction on die surface. Friction plays a role which has to be further identified in this metal forming process. The local contact pressure between
MANGIN, Philippe   +2 more
core   +1 more source

Study and Analysis on Stress Safety Judgment Method of Heavy Vehicle Rolling on Long-Distance Pipeline

open access: yesGeofluids, 2022
With the rapid increasing mileage of China’s long-distance oil and gas pipelines, the intersection construction with other civil engineering, encroachment by invading the pipeline route, and other third-part problems occurred occasionally. Heavy vehicles
Ning Shi   +5 more
doaj   +1 more source

Dynamical Models of Extreme Rolling of Vessels in Head Waves [PDF]

open access: yes, 2009
Rolling of a ship is a swinging motion around its length axis. In particular vessels transporting containers may show large amplitude roll when sailing in seas with large head waves.
Dobbersch ̈tz, S   +2 more
core   +2 more sources

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