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不同耦合算法的曲軸應力分布及其影響因素分析
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國家自然科學基金資助項目（50975192）;高等學校博士點專項科研基金資助項目（20090032110001）


Crankshaft Stress Distribution Based on Different Dynamic Algorithms and Lubrication Parameters
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    摘要:

    以某發(fā)動機軸系為研究對象，運用有限元建模,，結(jié)合動力學,、潤滑理論對軸系動態(tài)應力分布進行分析，采用非線性彈簧（NONL）,、動態(tài)液壓潤滑（HD）,、彈性動態(tài)液壓潤滑（EHD）對軸系應力進行對比分析，并針對曲軸振動過程中影響曲軸應力分布的因素進行分析,。結(jié)果表明,，不同算法下曲軸的應力分布差別主要是由于曲軸的扭轉(zhuǎn)和彎曲計算結(jié)果有差別，同時曲軸在不同時刻不同截面由扭振和彎振引起的應力大小的貢獻度不同,。以EHD為基本模型進行分析表明,，潤滑參數(shù)油槽對主軸頸應力分布影響較小，只有-2.5~2.5MPa,。

    Abstract:

    An engine crankshaft was investigated. The finite element method, dynamics method and lubrication theory were used to analyze the dynamic stress distribution of the crankshaft. At the same time, the nonlinear spring (NONL), dynamic hydraulic lubrication (HD) and elastic dynamic hydraulic lubrication (EHD) were used to analyze the crankshaft stress. Some parameters that influence on the stress distribution of the crankshaft were analyzed. The results showed that the stress distribution of crankshaft was different under different calculation models, because the torsional vibration and bending were different. At the same time, the stress caused by the contribution of torsional vibration and bending vibration in different sections at different times was different. Oil groove were also studied to investigate the influence that these parameters on the stress distribution based on the EHD model. It had little influence on the stress distribution. The value range was only -2.5~2.5MPa.

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何振鵬,張俊紅,張桂昌,楊碩,呂峰.不同耦合算法的曲軸應力分布及其影響因素分析[J].農(nóng)業(yè)機械學報,2011,42(8):207-213,218. He Zhenpeng, Zhang Junhong, Zhang Guichang, Yang Shuo, Lü Feng. Crankshaft Stress Distribution Based on Different Dynamic Algorithms and Lubrication Parameters[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(8):207-213,218.

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