某型工作船轴系振动特性及响应分析
发布时间:2019-05-16 22:32
【摘要】:为了评估某工作船轴系轴承参数变化对振动特性的影响,利用有限元软件进行轴系建模、模态和谐响应计算,分析推力轴承纵向刚度、后艉轴承支撑刚度和位置变化对固有频率的影响,并计算轴系的振动响应。结果表明,推力轴承纵向刚度主要影响轴系纵向固有特性,后艉轴承刚度影响中、高阶固有频率,后艉轴承位置影响低、中、高阶固有频率,轴系在激振力作用下后艉轴承处位移最大;建议在轴系设计中优化轴承参数,降低轴系异常振动风险。
[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.
【作者单位】: 中国船舶重工集团公司第七0四研究所;
【基金】:国家部委基金资助项目
【分类号】:U664.21
本文编号: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.
【作者单位】: 中国船舶重工集团公司第七0四研究所;
【基金】:国家部委基金资助项目
【分类号】:U664.21
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