盾構(gòu)機(jī)多級(jí)行星輪系非線性動(dòng)態(tài)特性研究
發(fā)布時(shí)間：2018-10-24 16:15
【摘要】：為揭示盾構(gòu)機(jī)驅(qū)動(dòng)刀盤(pán)的三級(jí)行星傳動(dòng)的主減速器系統(tǒng)的非線性動(dòng)力學(xué)行為,建立了考慮行星數(shù)、齒側(cè)間隙和動(dòng)載荷的純扭轉(zhuǎn)耦合非線性動(dòng)力學(xué)模型。推導(dǎo)嚙合點(diǎn)處的各零件間的相對(duì)位移,建立系統(tǒng)微分方程組,對(duì)微分方程組進(jìn)行坐標(biāo)變換,并進(jìn)行無(wú)量綱化處理,然后利用變步長(zhǎng)四階龍格庫(kù)塔法對(duì)無(wú)量綱化微分方程組進(jìn)行求解,獲得傳動(dòng)機(jī)構(gòu)的相圖、龐加萊圖,通過(guò)改變激勵(lì)幅值和嚙合剛度,分析參數(shù)變化對(duì)系統(tǒng)非線性動(dòng)態(tài)特性的影響。結(jié)果表明,隨著激勵(lì)幅值的增加,系統(tǒng)由穩(wěn)定的單周期運(yùn)動(dòng)狀態(tài)進(jìn)入二周期運(yùn)動(dòng)狀態(tài),然后經(jīng)多周期運(yùn)動(dòng)進(jìn)入混沌運(yùn)動(dòng);隨著嚙合剛度的增加,系統(tǒng)由混沌運(yùn)動(dòng)狀態(tài)進(jìn)入多周期運(yùn)動(dòng)狀態(tài),最后穩(wěn)定于單周期運(yùn)動(dòng)狀態(tài);增大嚙合剛度ks3,以及減小激勵(lì)幅值,均能提高系統(tǒng)的穩(wěn)定性。
[Abstract]:In order to reveal the nonlinear dynamic behavior of the main reducer system of three-stage planetary drive driven by shield machine, a pure torsional coupling nonlinear dynamic model considering the number of planets, tooth clearance and dynamic load was established. The relative displacement of the parts at the meshing point is deduced, the system differential equation group is established, the coordinate transformation of the differential equation system is carried out, and the dimensionless processing is carried out. Then the fourth order Runge-Kutta method with variable step size is used to solve the dimensionless differential equations. The phase diagram, Poincare diagram of the transmission mechanism is obtained by changing the excitation amplitude and meshing stiffness. The influence of parameter variation on the nonlinear dynamic characteristics of the system is analyzed. The results show that, with the increase of excitation amplitude, the system changes from the steady state of single-period motion to the state of two-period motion, then through the motion of multi-period into chaotic motion, and with the increase of meshing stiffness, The stability of the system can be improved by increasing the meshing stiffness ks3, and reducing the excitation amplitude.
【作者單位】： 無(wú)錫工藝職業(yè)技術(shù)學(xué)院;燕山大學(xué)機(jī)械工程學(xué)院;
【基金】：國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(973計(jì)劃)課題子課題(2013CB733003)
【分類(lèi)號(hào)】：TH132.425
，
本文編號(hào)：2291884
[Abstract]:In order to reveal the nonlinear dynamic behavior of the main reducer system of three-stage planetary drive driven by shield machine, a pure torsional coupling nonlinear dynamic model considering the number of planets, tooth clearance and dynamic load was established. The relative displacement of the parts at the meshing point is deduced, the system differential equation group is established, the coordinate transformation of the differential equation system is carried out, and the dimensionless processing is carried out. Then the fourth order Runge-Kutta method with variable step size is used to solve the dimensionless differential equations. The phase diagram, Poincare diagram of the transmission mechanism is obtained by changing the excitation amplitude and meshing stiffness. The influence of parameter variation on the nonlinear dynamic characteristics of the system is analyzed. The results show that, with the increase of excitation amplitude, the system changes from the steady state of single-period motion to the state of two-period motion, then through the motion of multi-period into chaotic motion, and with the increase of meshing stiffness, The stability of the system can be improved by increasing the meshing stiffness ks3, and reducing the excitation amplitude.
【作者單位】： 無(wú)錫工藝職業(yè)技術(shù)學(xué)院;燕山大學(xué)機(jī)械工程學(xué)院;
【基金】：國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(973計(jì)劃)課題子課題(2013CB733003)
【分類(lèi)號(hào)】：TH132.425
，
本文編號(hào)：2291884
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