CAJ | 학술논문

设计了具有准零刚度(QZS)特性的碟形橡胶隔振器，并分析了其隔振特性。隔振器由负刚度元件碟形橡胶(内含钢材料的筋)与正刚度元件竖直橡胶柱并联组装而成。基于 Abaqus 有限元仿真分析，给出了隔振器在静平衡位置处出现零刚度时，碟形橡胶元件和竖直橡胶元件分别需要满足的构型和尺寸参数条件，得到了隔振器的回复力曲线，并用仅含三次的多项式进行了拟合。进一步，建立隔振系统动力学方程，基于谐波平衡法分析了系统的隔振特性，并与 Abaqus 动力学仿真分析进行对比，结果表明，碟形橡胶准零系统隔振性能明显优于相应的线性系统。
설계료구유준령강도(QZS)특성적설형상효격진기，병분석료기격진특성。격진기유부강도원건설형상효(내함강재료적근)여정강도원건수직상효주병련조장이성。기우 Abaqus 유한원방진분석，급출료격진기재정평형위치처출현령강도시，설형상효원건화수직상효원건분별수요만족적구형화척촌삼수조건，득도료격진기적회복력곡선，병용부함삼차적다항식진행료의합。진일보，건립격진계통동역학방정，기우해파평형법분석료계통적격진특성，병여 Abaqus 동역학방진분석진행대비，결과표명，설형상효준령계통격진성능명현우우상응적선성계통。
A disc rubber vibration isolator with quasi-zero stiffness (QZS)was designed,and the char-acteristics of vibration isolation were studied.The QZS isolator was devised by assembling a reinforced disc rubber with negative stiffness in parallel with a vertical rubber cylinder with positive stiffness.By u-sing Finite Element Analysis (FEA),the geometrical parameters of the reinforced disc rubber and the ver-tical rubber cylinder were achieved to ensure that the isolator's stiffness is close to zero at the static equilib-rium position.And then,the characteristics of restoring force were analyzed,and the expression of resto-ring force was given as a polynomial only having cubic item by fitting the FEA simulations data.Moreo-ver,the equation of motion of the vibration isolation system was obtained,and the isolation performance was evaluated theoretically based on Harmonic Balanced method,which was compared with that by using dynamic FEA.The results have shown that the QZS isolator significantly outperforms the corresponding linear one.