an oscillation that has a frequency which is an integral submultiple of the frequency of a related oscillation
Word origin
[sub- + harmonic]sub- is a prefix occurring originally in loanwords from Latin (subject; subtract; subvert; subsidy). On this model, sub- is freely attached to elements of any origin and used with the meaning “under,” “below,”“beneath” (subalpine; substratum), “slightly,” “imperfectly,” “nearly” (subcolumnar; subtropical), “secondary,” “subordinate” (subcommittee; subplot)
Examples of 'subharmonic' in a sentence
subharmonic
Wideband and subharmonic emissions from bubbles were used to quantify inertial and stable cavitation, respectively.
Ching-Hsiang Fan, Hao-Li Liu, Chien-Yu Ting, Ya-Hsuan Lee, Chih-Ying Huang, Yan-JungMa, Kuo-Chen Wei, Tzu-Chen Yen, Chih-Kuang Yeh 2014, 'Submicron-Bubble-Enhanced Focused Ultrasound for Blood–Brain Barrier Disruption andImproved CNS Drug Delivery', PLoS ONE10.1371/journal.pone.0096327. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The conditions for the existence of subharmonic solutions are established.
Qi Wang, Dicheng Lu, Zhaoyue Zheng 2012, 'Subharmonic Solutions with Prescribed Minimal Periodic for a Class of Second-OrderImpulsive Functional Differential Equations', Abstract and Applied Analysishttp://dx.doi.org/10.1155/2012/457163. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
In this paper, we summarize recent advances in the use of subharmonic imaging in vivo.
John R. Eisenbrey, Anush Sridharan, Ji-Bin Liu, Flemming Forsberg 2015, 'Recent Experiences and Advances in Contrast-Enhanced Subharmonic Ultrasound', BioMed Research Internationalhttp://dx.doi.org/10.1155/2015/640397. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Numerical simulations show rotor vibration spectrum rich in subharmonic, quasi-periodic, and chaotic vibrations.
Jerzy T. Sawicki, Joe Padovan, Rabih Al-Khatib 1999, 'The Dynamics of Rotor with Rubbing', International Journal of Rotating Machineryhttp://dx.doi.org/10.1155/S1023621X99000263. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Multiple subharmonic, periodic, and quasiperiodic motions are presented with two seal-pressure drops.
Yuefang Wang, Xiaoyan Wang 2010, 'Nonlinear Vibration Analysis for a Jeffcott Rotor with Seal and Air-Film Bearing Excitations',Mathematical Problems in Engineeringhttp://dx.doi.org/10.1155/2010/657361. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Moreover, the amplitude-frequency equation and phase-frequency equation of steady-state solution for subharmonic resonance are established.
Yongjun Shen, Peng Wei, Chuanyi Sui, Shaopu Yang 2014, 'Subharmonic Resonance of Van Der Pol Oscillator with Fractional-Order Derivative',Mathematical Problems in Engineeringhttp://dx.doi.org/10.1155/2014/738087. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
For subharmonic resonance, an adequate feedback can reduce the regions of subharmonic resonance response.
A.M. Elnaggar, K.M. Khalil 2016, 'The response of nonlinear controlled system under an external excitation via timedelay state feedback', Journal of King Saud University: Engineering Scienceshttp://www.sciencedirect.com/science/article/pii/S101836391400004X. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)