基于三階龍格庫塔法的銑削穩(wěn)定性半解析法預(yù)測
發(fā)布時間:2018-12-15 04:00
【摘要】:針對使用再生顫振理論建立的銑削動力學(xué)模型,提出了一種基于三階龍格庫塔法用于預(yù)測銑削穩(wěn)定性的半解析方法。首先,以狀態(tài)空間方程的形式表示動力學(xué)微分方程;其次,利用三階龍格庫塔法推導(dǎo)出傳遞矩陣;最后利用Floquet理論判斷特定切削狀態(tài)下的穩(wěn)定性,進(jìn)而獲得銑削穩(wěn)定性葉瓣圖。通過與半離散法的仿真結(jié)果進(jìn)行對比發(fā)現(xiàn),基于三階龍格庫塔法的銑削穩(wěn)定性求解方法具有更高的預(yù)測精度和計算效率。
[Abstract]:Based on the dynamic model of milling based on regenerative flutter theory, a semi-analytical method based on third-order Runge-Kutta method is proposed to predict milling stability. First, the dynamic differential equation is expressed in the form of the state space equation; secondly, the transfer matrix is derived by using the third order Runge-Kutta method; finally, the stability of the milling stability is judged by the Floquet theory, and the stable leaf lobe graph of milling is obtained. By comparing with the simulation results of semi-discrete method, it is found that the method based on the third-order Runge-Kutta method has higher prediction accuracy and computational efficiency.
【作者單位】: 湖南工業(yè)大學(xué)機(jī)械工程學(xué)院;
【基金】:國家自然科學(xué)基金資助項目(51375160,51375161) 國家科技重大專項資助項目(2012ZX04011-011)
【分類號】:TG54
本文編號:2379932
[Abstract]:Based on the dynamic model of milling based on regenerative flutter theory, a semi-analytical method based on third-order Runge-Kutta method is proposed to predict milling stability. First, the dynamic differential equation is expressed in the form of the state space equation; secondly, the transfer matrix is derived by using the third order Runge-Kutta method; finally, the stability of the milling stability is judged by the Floquet theory, and the stable leaf lobe graph of milling is obtained. By comparing with the simulation results of semi-discrete method, it is found that the method based on the third-order Runge-Kutta method has higher prediction accuracy and computational efficiency.
【作者單位】: 湖南工業(yè)大學(xué)機(jī)械工程學(xué)院;
【基金】:國家自然科學(xué)基金資助項目(51375160,51375161) 國家科技重大專項資助項目(2012ZX04011-011)
【分類號】:TG54
【相似文獻(xiàn)】
相關(guān)碩士學(xué)位論文 前3條
1 楊陽;龍格庫塔法求模糊微分方程的數(shù)值解[D];哈爾濱工業(yè)大學(xué);2015年
2 劉文杰;譜方法和隱式龍格庫塔法求解二維薛定諤方程[D];哈爾濱工業(yè)大學(xué);2012年
3 Okbamichael Ghebremeskel Desta;[D];中南大學(xué);2012年
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