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考慮關(guān)節(jié)耗散的平面兩自由度五桿機(jī)構(gòu)動(dòng)力學(xué)建模
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    摘要:

    將摩擦力視為外部非保守力，提出了包含耗散函數(shù)的Appell方程,。應(yīng)用運(yùn)動(dòng)影響系數(shù)法進(jìn)行機(jī)構(gòu)的運(yùn)動(dòng)學(xué)分析; 構(gòu)建了機(jī)構(gòu)系統(tǒng)的路里葉耗散函數(shù),，推導(dǎo)出廣義耗散力,。建立了包含耗散函數(shù)的平面閉鏈五桿機(jī)構(gòu)的動(dòng)力學(xué)模型,，并提出了解算方法,。逆動(dòng)力學(xué)計(jì)算結(jié)果驗(yàn)證了動(dòng)力學(xué)模型的正確性,，仿真結(jié)果表明關(guān)節(jié)摩擦對(duì)機(jī)構(gòu)運(yùn)動(dòng)的影響顯著,。

    Abstract:

    The friction was disposed as an external non-inertia force, and a mended Appell equation including the friction of system was put forward. The kinematic characteristics of a planar closed-loop five-bar mechanism were analyzed by using the method of kinematic influence coefficient. The dissipation function of the mechanism system was proposed, then the generalized dissipation forces were deduced. The dynamics model of the mechanism which included the joint friction was proposed by means of the mended equation. And arithmetic was presented to solve these equations. The results of inverse dynamics testified the correction of the model. The outcomes of simulation indicated that joint friction has obvious influence on motion parameters of the mechanism.

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李仁軍,劉宏昭,李鵬飛.考慮關(guān)節(jié)耗散的平面兩自由度五桿機(jī)構(gòu)動(dòng)力學(xué)建模[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2008,39(12):157-161.[J]. Transactions of the Chinese Society for Agricultural Machinery,2008,39(12):157-161.

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