Results 61 to 70 of about 9,909,772 (235)
The dynamical stability of W Ursae Majoris-type systems
, 2008 Theoretical study indicates that a contact binary system would merge into a rapidly rotating single star due to tidal instability when the spin angular momentum of the system is more than a third of its orbital angular momentum.
Albayrak +32 more
core +1 more source
Performance enhancement of normal contact ratio gearing system through correction factor
Journal of Mechanical Engineering and Sciences, 2019 As lined, higher transmission ratio drives system will have uneven stresses in the root region of the pinion and wheel. To enrich this agility of uneven stresses in normal-contact ratio (NCR) gearing system, an enhanced system is desirable to be ...
R. Ravivarman +2 more
doaj +1 more source
General Properties of Contact Binary System for Mass Ratio Distribution [PDF]
Journal of Astronomy and Space Sciences, 1999 With a total 761 contact binary systems in Svechnikov & Kuznetsova(1990)'s cat- alogue, their physical properties by the mass ratio are inverstigated - for the early CE type with a common radiative envelope and the late CW type with a common convective ...
Kyu-Dong Oh
doaj
Statistics of the separation between sliding rigid rough surfaces: Simulations and extreme value theory approach [PDF]
, 2019 When a rigid rough solid slides on a rigid rough surface, it experiences a random motion in the direction normal to the average contact plane. Here, through simulations of the separation at single-point contact between self-affine topographies, we ...
Malthe-Sørenssen, Anders +4 more
core +2 more sources
Output Ripple Difference and Following Lightweight Design of External Gear Pumps and Motors
Jixie chuandong, 2023 In order to clarify the different output mechanism and following ripple difference between external gear pump and motor, based on the reverse design method from performance to gear parameter and special involute feature without undercut, from the contact
Wang Hao, Song Anran, Li Yulong
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Low Mass Ratio Contact Binary Systems HN UMa and II UMa - III [PDF]
Journal of Astronomy and Space Sciences, 2006 We present newly observed BVRI CCD light curves for low mass ratio contact binaries, HN UMa and II UMa. The absolute dimensions of these objects were obtained by applying the Wilson-Devinney program to previously published spectroscopic analysis and to ...
Woo-Baik Lee +3 more
doaj +1 more source
Effect of contact ratio on spur gear dynamic load [PDF]
A computer simulation is presented which shows how the gear contact ratio affects the dynamic load on a spur gear transmission. The contact ratio can be affected by the tooth addendum, the pressure angle, the tooth size (diametral pitch), and the center ...
Lin, Hsiang Hsi +3 more
core +1 more source
Contact Changes near Jamming [PDF]
, 2014 We probe the onset and effect of contact changes in soft harmonic particle packings which are sheared quasistatically. We find that the first contact changes are the creation or breaking of contacts on a single particle.
Dagois-Bohy, Simon +5 more
core +4 more sources
Reducing the Aspect Ratio of Contact Holes by In-Situ Low-Angle Cross Sectioning
, 2015 Auger analysis of high-aspect ratio contact holes of integrated microelectronic devices is a challenging analytical task. Due to geometrical shadowing the primary electron beam and the energy analyser have not the required direct line of sight to the ...
Scheithauer, Uwe
core +1 more source
Jixie chuandong, 2015 The contact ratio is an important performance index of gear transmission,but there is no computational formula of contact ratio for complex tooth surface transmission,such as face gears.The definition of face gear contact ratio is given,and the method of
Dong Jianxiong, Tang Jinyuan
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