Reliability-based Optimization of the Acoustic Metamaterial under the Interval Model

Baizhan XIA
2016 Journal of Mechanical Engineering  
Abstract:Up to now, the optimization of the acoustic metamaterial is based on the deterministic physical model without considering the effects of uncertainties on its unusual properties. Aiming at this actuality, the interval model is introduced into the acoustic metamaterial, and the influences of uncertainties on the sound intensity transmission coefficient and the negative effective bulk modulus of the acoustic metamaterial are investigated. Based on it, a reliability-based optimization
more » ... d optimization model of the acoustic metamaterial with interval variables is constructed. In this optimization model, the sound intensity transmission coefficient is considered as the objective function and the negative effective bulk modulus is treated as the reliability constraint. The numerical results show that for the optimized acoustic metamaterial suffering from the effects of uncertain parameters, its reliability constraint can be satisfied, and its sound intensity transmission coefficient and the negative effective bulk modulus can be improved. Key words:acoustic metamaterial;sound intensity transmission coefficient;negative effective bulk modulus;interval model; optimization 0 前言 * 月 2016 年 7 月 夏百战等:区间模型下声学超材料的可靠性优化 95
doi:10.3901/jme.2016.13.094 fatcat:jugnktisszejrds3j4iilnmcke