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重型貨車非線性懸架結(jié)構(gòu)參數(shù)動力學(xué)優(yōu)化
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    摘要:

    建立了由主,、副鋼板彈簧組成的重型貨車非線性后懸架系統(tǒng)的二自由度動力學(xué)模型，用Matalab/Simulink計算出車身垂直振動加速度均方根值,。構(gòu)建了以空載,、臨界載荷和滿載下加速度均方根值的算術(shù)平均值為目標(biāo)函數(shù)的優(yōu)化設(shè)計模型,，對懸架的剛度比和臨界載荷比進行了動力學(xué)優(yōu)化,。實例計算表明,，與比例中項法和平均負(fù)荷法相比,，用最優(yōu)化方法確定懸架的剛度比和臨界載荷比可明顯改善汽車從空載到滿載范圍內(nèi)的平順性,。

    Abstract:

    A 2-DOF dynamical model of nonlinear rear suspension system composed of main and auxiliary spring of heavy truck was created. The RMS amplitude of vertical acceleration was figured out by Matalab/Simulink and the optimizing model was developed. The aiming function was the arithmetic average of RMS amplitude of acceleration under empty load, critical load and full load. Suspension construction parameters, stiffness ratio and critical load ratio were optimized by dynamics. The example showed that compared with methods of proportional middle term and average load, the smoothness of truck with optimum stiffness ratio and critical load ratio has been improved.

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楊啟梁.重型貨車非線性懸架結(jié)構(gòu)參數(shù)動力學(xué)優(yōu)化[J].農(nóng)業(yè)機械學(xué)報,2007,38(6):23-25.[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(6):23-25.

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