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非線性振動(dòng)干燥機(jī)板簧曲面有限元分析與優(yōu)化
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Analysis and Optimization on Leaf Spring Curved Surface of Nonlinear Vibration Dryer
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    摘要:

    針對線性非共振式振動(dòng)干燥機(jī)工程上存在的問題,提出應(yīng)用非線性振動(dòng)理論,將其改進(jìn)為非線性近共振雙質(zhì)體振動(dòng)干燥機(jī),簡述了其工作原理,分析篩板可能承受系統(tǒng)突加載荷作用下的最大橫向力,進(jìn)行板簧曲面屈曲變形分析。研究表明:考慮物料粘度隨溫度而變化以及粒度不均勻性等因素而產(chǎn)生的突加載荷是正確的;板簧曲面由此發(fā)生屈曲變形而導(dǎo)致筒體的橫向失穩(wěn)是可能的。基于ANSYS軟件建立了分析模型,解得板簧曲面各階屈曲變形,可有效保障系統(tǒng)的穩(wěn)定與安全。

    Abstract:

    Aiming at the existing problems of the linear non-resonance vibrator dryer used in projects, the nonlinear nearby resonance double-mass vibrator dryer is applied. Following the introduction of the working principle, this paper analyzed the maximum transverse force of sieve plate on vibrator dryer when suffering sudden load of system, and performed finite element analysis of buckling deformation of leaf spring curved surface. The study shows that it is correct to consider the sudden load generated by the factors such as the material viscosity with temperature change and the heterogeneity of granularity. It is possible that transverse destabilization of the canister occurs when the buckling deformation of leaf spring suffers an action of lateral force from a sudden load. Finite element models based on the ANSYS software were established to analyze the stress of leaf spring. By investigating the physical response and the stress distribution, the buckling deformation of leaf spring in every step was solved. The above model can be widely used in the stability and the security of the system.

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楊小蘭,劉極峰,濮翔峰.非線性振動(dòng)干燥機(jī)板簧曲面有限元分析與優(yōu)化[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(12):84-87. Analysis and Optimization on Leaf Spring Curved Surface of Nonlinear Vibration Dryer[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(12):84-87.

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