CAJ | 학술논문

为研究黏弹性减振器的非线性阻尼缓冲性能，根据其结构特点和非线性特征，建立单自由度分段非对称非线性振动模型，并由平均法推导出系统固有频率共振区附近的幅频特性方程。以安装在某300kw履式拖拉机的黏弹性减振器为应用对象进行研究，分析系统在固有频率共振区附近的非线性特性和阻尼减振性能。讨论了幅频特性分别和激励幅值、刚度系数、阻尼系数、质量之间的关系，并提出改善系统减振性能的建议。
위연구점탄성감진기적비선성조니완충성능，근거기결구특점화비선성특정，건립단자유도분단비대칭비선성진동모형，병유평균법추도출계통고유빈솔공진구부근적폭빈특성방정。이안장재모300kw리식타랍궤적점탄성감진기위응용대상진행연구，분석계통재고유빈솔공진구부근적비선성특성화조니감진성능。토론료폭빈특성분별화격려폭치、강도계수、조니계수、질량지간적관계，병제출개선계통감진성능적건의。
In order to investgate the damping vloratlon reducton shock absorber, a single DOF model of subsection non--symmetrical nonlinear oscillation was built ac- cording to its structural feature and nonlinear behavior. The approximate analytic solution of move ment system was derived in the natuaral frequency section, based on the averaging method. Then the nonlinear vibration characteristic and the performance of vibration damping reduction of absorber were studied in the natuaral frequency resonance region, taking a 300kW tracked tractor mounted with for instance. The relationship of the amplitude--frequency charaterstics and system parameters,including the excitation amplitude,the stiffness and damping coefficients of viscoelastic shock absorber and the supported mass, were numerically analyzed.