Effect of asymmetry in the restoring force of the “click” mechanism in insect flight

Abolfathi, Ali; Changizi, M. Amin; Brennan, M.J.

doi:10.1088/1742-6596/744/1/012121

Cited by 1 publication

(1 citation statement)

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“…The common theme between different models is the nonlinearity in restoring force of the "flight mechanism". The benefit of such a nonlinear mechanism is attributed to an increase in the kinetic energy of the wings [13,14], modulation of the flapping amplitude [15] and an increase in the flapping speed during half of the flapping cycle [16]. In this paper, the energy efficiency of a flight mechanism is investigated by examining the active and reactive powers of a nonlinear oscillatory system.…”

Section: Introductionmentioning

confidence: 99%

Exploiting nonlinearity in a flapping wing mechanism of a bio inspired micro air vehicle to enhance energy efficiency

Abolfathi

2018

MATEC Web Conf.

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Abstract. In recent years, there was a great interest in developing flying drones with similar capabilities as flying insects. It is suggested that the flapping frequency of insects coincides with the resonance frequency of their flight mechanism to enhance the power consumptions. In this paper, the effect of nonlinearity in the flight mechanism on the power consumption is investigated. A simple nonlinear model of the insect flight mechanism is developed and normalised to study the effect of different parameters on its performance. Both bistable and hardening nonlinearity are considered. It is shown that for a harmonic loading, the bistable systems reach their peak power at lower frequencies when compared to the corresponding linear system. The maximum power factor of nonlinear oscillator would be lower than the liner one. It is also shown that the peak active power of the bistable system has a higher value than the linear system if the loading function is a pulse square signal.

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Section: Introductionmentioning

confidence: 99%