Results 271 to 280 of about 10,039,203 (328)

Natural Frequency of Gears

Journal of Fluids Engineering, 1930
Abstract The natural frequency of machine parts as related to the noise problem in machine operation is discussed in a general manner. Vibration phenomena in disks and rings are described in detail, following which the author discusses the manner in which a gear vibrates at its natural frequency.
openaire   +1 more source

Natural Frequencies in Sexual Pelvic Thrusting

Integrative And Comparative Biology
Synopsis Seventy percent of mammals copulate using repeated pelvic thrusting, while the transfer of sperm requires just a single intromission. Why did thrusting evolve to be the dominant form of sexual intercourse? In this study, we investigate how the rate of sexual pelvic thrusting changes with body size.
Joseph Nehme-Haily, Luping Yin, Veronica Diaz, Dayu Lin, David L Hu   +4 more
openaire   +2 more sources

Natural Frequencies, an Approximation

2004
Generally, when calculating the natural frequencies of complex dynamic linear systems the finite element analysis method is applied. However, it is good practice to first apply a method to approximately calculate the natural frequency of that system to get a feel for the value of the natural frequency.
openaire   +1 more source

Meta-Analysis of the Effect of Natural Frequencies on Bayesian Reasoning

Psychological bulletin, 2017
M. McDowell, Perke Jacobs
semanticscholar   +1 more source

NATURAL FREQUENCIES‐

Journal of the American Society for Naval Engineers, 1949
Merl D. Creech, James O. Melton
openaire   +1 more source

Natural hybridization: Frequency

1997
Abstract As discussed in Chapter ], numerous investigators have used natural hybridiza tion as a tool for studying phenomena that may cause population divergence and speciation (i.e., the formation of ban-iers to reproduction; Barton and Charlesworth, 1984; Coyne and Barton, 1988; Hewitt, 1988; Barton and Hewitt, 1989).
openaire   +1 more source

Natural Frequency

2009
  +4 more sources

Natural frequencies of functionally graded plates with porosities via a simple four variable plate theory: An analytical approach

, 2017
A. Rezaei, A. Saidi, M. Abrishamdari, M. Mohammadi   +3 more
semanticscholar   +1 more source

Environmental effects on natural frequencies of the San Pietro bell tower in Perugia, Italy, and their removal for structural performance assessment

, 2017
F. Ubertini, G. Comanducci, N. Cavalagli, A. Pisello, A. Materazzi, F. Cotana   +5 more
semanticscholar   +1 more source

Optimizing the natural frequencies of axially functionally graded beams and arches

, 2017
G. Tsiatas, A. Charalampakis
semanticscholar   +1 more source