Efficient Computational Techniques for Planetary Gear Train Analysis
We propose a novel analysis tool for planetary gear train representation. This extends the traditional concept of a lever representation of a planetary gear set to one that includes negative lever ratios. The resulting framework allows an exhaustive permutation of the nodes of a lever, thereby leading to all possible topological arrangements of a planetary gear train. Consequently, we achieve compact representations of large families of planetary gear trains, which would otherwise have to be dealt with on a case-by-case basis.
IJSRD-International Journal for Scientific Research & Development| Vol. 3, Issue 02, 2015 | ISSN (online): 2321-0613
The improvement the quality ring and rotor after doubling is depend upon single and double twist factor. S/Z rotor yarns have bigger diameter than S/Z twist factor. The twist over doubling of low twist rotor spun singles results in significant improvement in the tenacity of rotor yarn and the differences in the strength of ring and rotor spun yarns is considerably reduced. The breaking extension of doubled rotor yarns was greater than that of ring spun yarns for balance twist but lower for twist over twist doubling irrespective of twist multiplier of singles. Improvement in the imperfection of both type of yarn after doubling. In case of tenacity rotor yarn shows more improvement in the double yarn than ring double yarn.
Ionization by drift and ambipolar electric fields in electronegative capacitive radio frequency plasmas.
Unlike α- and γ-mode operation, electrons accelerated by strong drift and ambipolar electric fields in the plasma bulk and at the sheath edges are found to dominate the ionization in strongly electronegative discharges. These fields are caused by a low bulk conductivity and local maxima of the electron density at the sheath edges, respectively. This drift-ambipolar mode is investigated by kinetic particle simulations, experimental phase-resolved optical emission spectroscopy, and an analytical model in CF(4). Mode transitions induced by voltage and pressure variations are studied.