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Numerical Analysis and Study of Crankshaft System Hydrodynamic Lubrication and Dynamic Coupling System |
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PP: 313-321 |
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Author(s) |
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Lin Qiong,
Meng Bin,
Yang Qinghua,
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Abstract |
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| Using finite element method and multi-body dynamics method, this study established an engine digitalized virtual prototype
embraced tribological characteristics in virtual prototype and MATLAB platform, and introduced Elastohydrodynamics theory into the
system, wrote program with difference equation method, and solved the Reynolds Equation through shafting-bearing self-feedback
control system, obtained the crankshaft main bearing reaction force which considered the system’s oil film dynamic lubricating friction
behaviour, and also obtained data of main bearing’s load capacity, path of axle center and the minimum thickness of oil film. Though
analysis, it is found that engine crankshaft system’s oil film dynamic lubricating friction has certain impact on system’s dynamic
characteristics, where using hydrodynamic lubrication coupling multi-body dynamic system for simulation could better reflect the
engine’s actual working conditions, therefore the oil film dynamic lubricating friction behaviour of the system should be considered in
dynamic simulation calculations. |
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