本文關(guān)鍵詞： 達(dá)朗貝爾原理 牛頓歐拉法 有限單元法 液壓變幅構(gòu)件　出處：《機(jī)床與液壓》2017年09期 　論文類型：期刊論文

【摘要】：基于達(dá)朗貝爾原理結(jié)合牛頓歐拉法和有限單元的方法建立機(jī)頭展收機(jī)構(gòu)的動(dòng)力學(xué)模型,牛頓歐拉法為剛體力學(xué)模型,有限單元法屬于彈性體力學(xué)模型,牛頓歐拉法計(jì)算的軸力最大值為137 k N,而有限單元法的軸力極值達(dá)到720 k N。計(jì)算結(jié)果表明:有限單元法計(jì)算的液壓變幅構(gòu)件軸力曲線變化平穩(wěn),但計(jì)算量較大;牛頓歐拉法計(jì)算量小,但容易產(chǎn)生軸力曲線波動(dòng)失真現(xiàn)象。牛頓歐拉法和有限單元法在機(jī)構(gòu)設(shè)計(jì)前期為確定液壓變幅構(gòu)件的軸力提供科學(xué)憑據(jù),有助于設(shè)計(jì)出性能優(yōu)越的機(jī)頭展收機(jī)構(gòu)液壓裝置。
[Abstract]:Based on Darumbert's principle and Newton Euler's method and finite element method, the dynamic model of die end unwinding mechanism is established. Newton Euler's method is rigid body mechanics model, and finite element method belongs to elastic body mechanics model. The maximum axial force calculated by Newton Euler method is 137 KN. The axial force extremum of the finite element method is 720 KN. The results show that the axial force curve of hydraulic variable amplitude components calculated by the finite element method is stable, but the calculation amount is large. The Newtonian Euler method is easy to produce the fluctuation distortion of axial force curve. Newton Euler method and finite element method provide scientific evidence for determining the axial force of hydraulic variable amplitude components in the early stage of mechanism design. It is helpful to design the hydraulic device with superior performance.
【作者單位】： 后勤工程學(xué)院軍事供油工程系;中國人民解放軍91943部隊(duì);
【基金】：國家科技支撐計(jì)劃(2014BAK05B00)
【分類號(hào)】：TH112
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本文編號(hào)：1492492