某型工作船軸系振動特性及響應(yīng)分析
發(fā)布時間:2019-05-16 22:32
【摘要】:為了評估某工作船軸系軸承參數(shù)變化對振動特性的影響,利用有限元軟件進(jìn)行軸系建模、模態(tài)和諧響應(yīng)計算,分析推力軸承縱向剛度、后艉軸承支撐剛度和位置變化對固有頻率的影響,并計算軸系的振動響應(yīng)。結(jié)果表明,推力軸承縱向剛度主要影響軸系縱向固有特性,后艉軸承剛度影響中、高階固有頻率,后艉軸承位置影響低、中、高階固有頻率,軸系在激振力作用下后艉軸承處位移最大;建議在軸系設(shè)計中優(yōu)化軸承參數(shù),降低軸系異常振動風(fēng)險。
[Abstract]:In order to evaluate the influence of bearing parameters on vibration characteristics of a working ship, the finite element software is used to model the shafting, calculate the modal harmonious response, and analyze the longitudinal stiffness of thrust bearings. The influence of the stiffness and position of the rear stern bearing on the natural frequency is calculated, and the vibration response of the shafting is calculated. The results show that the longitudinal stiffness of thrust bearing mainly affects the longitudinal natural characteristics of shafting, the stiffness of rear stern bearing affects the high order natural frequency, and the position of rear stern bearing has a low, middle and high order natural frequency. Under the action of excitation force, the displacement of the rear stern bearing of the shafting is the largest. It is suggested that the bearing parameters should be optimized in shafting design to reduce the risk of abnormal vibration of shafting.
【作者單位】: 中國船舶重工集團公司第七0四研究所;
【基金】:國家部委基金資助項目
【分類號】:U664.21
本文編號:2478599
[Abstract]:In order to evaluate the influence of bearing parameters on vibration characteristics of a working ship, the finite element software is used to model the shafting, calculate the modal harmonious response, and analyze the longitudinal stiffness of thrust bearings. The influence of the stiffness and position of the rear stern bearing on the natural frequency is calculated, and the vibration response of the shafting is calculated. The results show that the longitudinal stiffness of thrust bearing mainly affects the longitudinal natural characteristics of shafting, the stiffness of rear stern bearing affects the high order natural frequency, and the position of rear stern bearing has a low, middle and high order natural frequency. Under the action of excitation force, the displacement of the rear stern bearing of the shafting is the largest. It is suggested that the bearing parameters should be optimized in shafting design to reduce the risk of abnormal vibration of shafting.
【作者單位】: 中國船舶重工集團公司第七0四研究所;
【基金】:國家部委基金資助項目
【分類號】:U664.21
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