| 陈亮,薛冬新,宋希庚,明章杰.不同功率下柴油机主轴承弹性流体动力润滑分析[J].,2011,(4):505-511 |
| 不同功率下柴油机主轴承弹性流体动力润滑分析 |
| Analysis of elastohydrodynamic lubrication of diesel engine main bearings in different power conditions |
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| DOI：10.7511/dllgxb201104007 |
| 中文关键词: 主轴承 弹性流体动力润滑 曲轴 弹性变形 粗糙接触 |
| 英文关键词: main bearing elastohydrodynamics lubrication crankshaft elastic deformation asperity contact |
| 基金项目: |
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| 摘要点击次数: 1238 |
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| 中文摘要: |
| 计算了某16缸V形机车柴油发电机组滑动主轴承在不同功率(2 000、2 430、2 650、 2 940 kW)下的润滑情况．将曲轴设为弹性体,以考虑曲轴弹性变形对主轴承润滑状态的影响．对主轴承在工作过程中发生的摩擦接触,采用Greenwood-Tripp粗糙接触模型来计算,并用AVL相关标准评价了润滑计算结果．由计算结果看出,4个计算工况中的2 940、2 650和 2 000 kW工况均存在个别轴承处于半干摩擦状态的情况,而2 430 kW工况的润滑情况相对最好；第8、7、1主轴承为工作中相对危险的主轴承,危险主轴承位置和摩擦接触发生的部位与实际情况接近．试分析了造成第8、7、1主轴承出现摩擦接触的结构性原因． |
| 英文摘要: |
| The lubrication conditions of the main bearings of a 16 cylinders V form diesel generator set in four operation conditions (2 000, 2 430, 2 650, 2 940 kW) were simulated. The crankshaft was assumed as an elastic body to consider the deformation influence on lubrication performance of main bearings. Greenwood-Tripp asperity contact model was used to calculate the contact force in the friction area. Simulation results were examined by AVL criterion. Generator set is in the best lubrication condition at 2 430 kW work state, and there exists semi-dry friction in other work states. Nos. 8, 7, 1 main bearings are the vulnerable ones among all main bearings. The calculation results of the asperity contact place are identical with the real wearing location. The reasons of the asperity contact at Nos. 8, 7, 1 main bearings are discussed. |
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