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基于高性能計(jì)算的曲軸系統(tǒng)動(dòng)力學(xué)與疲勞仿真
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HPC-and Fatigue Simulation on Crankshaft System
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    摘要:

    針對(duì)曲軸的動(dòng)力學(xué)仿真和疲勞壽命計(jì)算，建立了一種曲軸系統(tǒng)大規(guī)模直接計(jì)算模型，借助高性能計(jì)算(HPC)技術(shù)并利用顯式有限元算法實(shí)現(xiàn)了動(dòng)力學(xué)模型的直接求解,，結(jié)果詳細(xì)描述了包括曲軸強(qiáng)度和變形在內(nèi)的曲軸系統(tǒng)動(dòng)力學(xué)特性。采用全壽命分析方法直接對(duì)動(dòng)力學(xué)仿真結(jié)果進(jìn)行曲軸壽命及安全系數(shù)的計(jì)算,，基于應(yīng)力-時(shí)間歷程等動(dòng)態(tài)結(jié)果進(jìn)行的疲勞分析結(jié)果顯得更為真實(shí)。計(jì)算過(guò)程和結(jié)果證明了曲軸系統(tǒng)直接動(dòng)力學(xué)及疲勞仿真分析方法的可行性和有效性,。

    Abstract:

    A large-scale, direct computational model of crankshaft system was established for dynamics simulation and calculation of fatigue life of a crankshaft. The dynamics model was solved by use of high-performance-computing (HPC) technique and explicit finite element method. The calculation result describes the crankshaft dynamics characteristics including strength and distortion in detail. The fatigue life evaluation on crankshaft was accomplished by S-N analysis method straightly utilizing dynamics simulation result and the analytical result based on dynamic stress-time history makes it more reasonable. The computational process and calculation result prove the feasibility and validity of this method for a crankshaft system.

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丁峻宏,張曉云,李根國(guó).基于高性能計(jì)算的曲軸系統(tǒng)動(dòng)力學(xué)與疲勞仿真[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2010,41(9):218-222. HPC-and Fatigue Simulation on Crankshaft System[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(9):218-222.

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