| 考虑可压缩性及惯性力的油膜力研究 |
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| 引用本文： | 姚熊亮,张成,孙士丽.考虑可压缩性及惯性力的油膜力研究[J].中国舰船研究,2010,5(6):33-40. |
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| 作者姓名： | 姚熊亮 张成 孙士丽 |
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| 作者单位： | [1]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001 [2]哈尔滨工程大学机电工程学院,黑龙江哈尔滨150001 |
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| 摘 要： | 一般油膜压力特性研究都是基于流体不可压缩的假设,没有计及可压缩性以及轴颈惯性力对油膜压力的影响,但在瞬态冲击重载作用下,油膜压力随时间变化剧烈,而油膜密度、粘度等状态参数又是关于压力的函数,此时,油膜不可压缩性假设不再适用。另外,冲击载荷作用下轴颈本身存在很高的加速度,因轴颈高速运动而产生的惯性力也不能被忽略。可压缩性以及轴颈惯性力引入到油膜压力的数值计算,使计算结果更符合实际的物理现象。
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| 关 键 词： | 油膜压力 可压缩性 惯性力 瞬态冲击 |
Analysis of Oil Film Force Considering Compressibility and Inertial Force |
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| Yao Xiong-Liang,Zhang Cheng,Sun Shi-Li.Analysis of Oil Film Force Considering Compressibility and Inertial Force[J].Chinese Journal of Ship Research,2010,5(6):33-40. |
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| Authors: | Yao Xiong-Liang Zhang Cheng Sun Shi-Li |
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| Institution: | 1 College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China; 2 College of Mechanical and Electrical Engineering,Harbin Engineering University,Harbin 150001,China ) |
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| Abstract: | The research on characteristics of oil film pressure was usually conducted based on the assumption of fluid incompressibility neglecting the impact of compressibility and the journal inertial force on oil film pressure.Oil film pressure however,will dramatically change with the varying time when subjected to transient shock heavy load,while density and viscosity of oil film are the function of oil pressure,thus the incompressibility assumption is no longer applicable in this case.Besides,the acceleration caused by shock loading exists in the journal and the inertial force of journal due to high motion of the journal cannot be neglected as well.Both the compressibility and the inertial force of journal were introduced in the calculation of oil film pressure to work out a result well agreed with practical one. |
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| Keywords: | oil film pressure compressibility inertial force transient shock |
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