CAJ | 학술논문

将计算流体动力学与简谐激励法应用于滑动轴承动力特性系数的求解，通过采用全新的变流域动网格技术提出一种基于瞬态流场计算的滑动轴承动特性的计算方法。利用所提出的方法计算典型滑动轴承的刚度、阻尼系数，并与已有的经典计算结果进行比较。结果表明：两种方法的计算结果基本吻合，提出的新方法不仅考虑了计算初值的影响，而且计入了实际存在的油膜破裂现象，满足精度要求，有效可行。
장계산류체동역학여간해격려법응용우활동축승동력특성계수적구해，통과채용전신적변류역동망격기술제출일충기우순태류장계산적활동축승동특성적계산방법。이용소제출적방법계산전형활동축승적강도、조니계수，병여이유적경전계산결과진행비교。결과표명：량충방법적계산결과기본문합，제출적신방법불부고필료계산초치적영향，이차계입료실제존재적유막파렬현상，만족정도요구，유효가행。
The computational fluid dynamics ( CFD) and harmonic excitation method were applied to the numerical calcula-tion of dynamic characteristics of journal bearing. By employing a new mesh movement approach based on structured grid, a new approach for calculating the dynamic characteristics of journal bearing was proposed based on the transient flow calcula-tion. The stiffness and damping coefficients of a typical bearing were calculated by applying the new approach. The results obtained from the method were compared with previous classic computation results. The results show that the computation re-sults of two methods are consistent. The effects of the computational initial value and the oil film fracture phenomenon are considered in this method, which is suitable for most of the journal bearing structures. The numerical method has good accu-racy, and the method is valid.