CAJ | 학술논문

由于钢丝间存在着干摩擦作用，钢丝绳减振器具有明显的非线性迟滞阻尼。现有文献中钢丝绳减振器迟滞模型的参数识别大都是基于初始零变形情况下给出的。实际上，在隔振系统中减振器是在承载作用下，此时已有一定的初始变形。钢丝绳减振器具有强非线性，相对于不同初始变形的迟滞曲线中的参数是不同的。为此，基于钢丝绳减振器额定荷载下的实验迟滞曲线，考虑高阶刚度和可能出现的多种阻尼成分，通过参数识别给出钢丝绳减振器额定荷载下的准静态非对称迟滞模型。结果表明：理论回线与试验回线吻合，该模型能很好地反映钢丝绳减振器的准静态非线性刚度和阻尼特性。
유우강사간존재착간마찰작용，강사승감진기구유명현적비선성지체조니。현유문헌중강사승감진기지체모형적삼수식별대도시기우초시령변형정황하급출적。실제상，재격진계통중감진기시재승재작용하，차시이유일정적초시변형。강사승감진기구유강비선성，상대우불동초시변형적지체곡선중적삼수시불동적。위차，기우강사승감진기액정하재하적실험지체곡선，고필고계강도화가능출현적다충조니성분，통과삼수식별급출강사승감진기액정하재하적준정태비대칭지체모형。결과표명：이론회선여시험회선문합，해모형능흔호지반영강사승감진기적준정태비선성강도화조니특성。
The wire-rope isolator has obvious nonlinear hysteretic characteristics because of the dry friction among the wires. In the literatures, most of the parameter identification of hysteresis model was based on the initial deformation-free assumption. In fact, there must exist some initial deformations in the wire-rope isolator since it is loaded. Due to the strong nonlinearity of the wire-rope isolator, its hysteresis parameters depend on initial deformations. In this paper, according to the experimental hysteresis curve of the isolator with rated load, and considering the high-order stiffness and the varying damping, a quasi-static asymmetrical hysteresis model was presented through the parameter identification. The results show that the hysteresis of the theoretical model is in consistent with that from the experiment. Therefore, the model can well reflect the quasi-static non-linear stiffness and damping characteristics of wire-rope isolators.