The optimization design of power anti-resonance isolator for helicopter rotor / fuselage

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (15) : 115-121.

LI Yuanyuan1 CHEN Guoping1 WANG Ke1

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Abstract

To improve the isolation efficiency of helicopter rotor / fuselage anti-resonance isolator, optimization for the isolation system has been accomplished. The thickness of the front and rear flexible beam and counterweight density are determined as the design variables through sensitivity analysis, and then the isolation efficiency and counterweight kinetic energy are optimized using genetic algorithms. Taking into account the low computational efficiency that simulation models direct call the optimization algorithm problem, a surrogate model built by response surface is established. The results show that: A certain anti-resonance frequency is consistent with the excitation frequency, counterweight vibration increasing, force transmission rate decreasing and vibration isolation efficiency is greatly improved after optimization. Optimization design improves the power isolator anti-resonance isolation performance and can provide some guidance for the design of helicopter vibration isolators.

Key words

Helicopter / Anti-resonance isolator / Response surface / Optimization

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LI Yuanyuan1 CHEN Guoping1 WANG Ke1. The optimization design of power anti-resonance isolator for helicopter rotor / fuselage[J]. Journal of Vibration and Shock, 2016, 35(15): 115-121

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