本文選題：減速機　切入點：軸承支反力　出處：《機械傳動》2016年06期

【摘要】：建立了起重機減速機的剛?cè)狁詈蟿恿W(xué)分析模型,采用變步長向后積分法求解得到了齒輪副嚙合力和軸承支反力,以軸承支反力為振動-聲耦合分析的載荷邊界條件,在LMS Virtual Lab中建立了包含結(jié)構(gòu)網(wǎng)格、聲學(xué)網(wǎng)格和場點網(wǎng)格的減速機振動-聲耦合分析邊界元模型,采用完全法求得減速機的表面和場點聲壓。以減速機的壁厚為設(shè)計變量,減速機的質(zhì)量為約束條件,場點聲壓為目標(biāo)函數(shù),建立了減速機的聲學(xué)優(yōu)化模型,采用正態(tài)邊界交匯優(yōu)化算法求得最優(yōu)設(shè)計變量。結(jié)果表明,優(yōu)化前后減速機的表面聲壓峰值均出現(xiàn)在500 Hz的中心頻段處,優(yōu)化后的減速機4個場點聲壓均有不同程度的減小。
[Abstract]:The rigid-flexible coupling dynamic analysis model of crane reducer is established. The gear pair meshing force and bearing supporting reaction force are solved by the variable step backward integral method. The bearing supporting reaction force is taken as the load boundary condition of vibration-acoustic coupling analysis. The vibration-acoustic coupling analysis boundary element model of reducer with structural mesh, acoustic grid and field point grid is established in LMS Virtual Lab. The sound pressure on the surface and field point of the reducer is obtained by using the complete method. The wall thickness of the reducer is taken as the design variable. The acoustic optimization model of the reducer is established by using the mass of the reducer as the constraint condition and the sound pressure of the field point as the objective function. The optimal design variables are obtained by using the normal boundary intersection optimization algorithm. Before and after optimization, the peak of the surface sound pressure of the reducer appears at the center frequency band of 500 Hz, and the sound pressure of the optimized reducer at the four field points decreases to some extent.
【作者單位】： 唐山學(xué)院機電工程系;
【分類號】：TH132.46

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1 陳羽;滕弘飛;;異構(gòu)模塊組合耦合分析的完全關(guān)聯(lián)矩陣[J];機械工程學(xué)報;2012年11期

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