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噴桿噴霧機機架動態(tài)特性分析與減振設計
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鎮(zhèn)江市農(nóng)業(yè)支撐資助項目（NY2011002）,、江蘇省自然科學基金資助項目（BK2009200）和江蘇省高校優(yōu)勢學科建設工程資助項目（蘇財教（2011）8號）


Dynamic Characteristic Analysis and Vibration Reduction Design for Sprayer Frame
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    摘要:

    在Pro/E中建立了噴桿噴霧機機架的三維模型,，在Hypermesh中建立了機架的有限元模型，并導入到ANSYS中進行了自由模態(tài)分析,并通過模態(tài)實驗分析了機架的振動特性并驗證了有限元模型的準確性,。結合模態(tài)分析結果,，分析了外部激勵對機架動態(tài)特性的影響，發(fā)現(xiàn)發(fā)動機1,、2階往復慣性力的頻率會導致機架共振,。通過諧響應分析得到機架的振動情況,，提出了避免機架與發(fā)動機共振的方案，對比了減振前,、后的機架位移響應幅值,。結果表明，安裝橡膠減振元件后機架的動態(tài)特性得到明顯改善,，提高了整機的操縱舒適性,。

    Abstract:

    A 3-D model of a sprayer was built with Pro/E，and its finite element model was developed by using Hypermesh. It was imported to ANSYS for free modal analysis. With analysis of vibration characteristic and accuracy of the finite element model, the modal experiment was carried out. Combined with the modal analysis results, the influence of external excitation on the frame was analyzed. It was found that engines first-order and second-order reciprocating inertial force frequency can cause frame resonance. Harmonic response analysis was carried out to obtain the vibration result of the frame. The method of avoiding resonance between frame and engine was proposed. The frame’s displacement response was compared before and after vibration reduction. The results showed that dynamic performance and ride equality of the frame was effectively improved. 

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陳樹人,韓紅陽,陳剛,邵景世,姚勇.噴桿噴霧機機架動態(tài)特性分析與減振設計[J].農(nóng)業(yè)機械學報,2013,44(4):50-53,20. Chen Shuren, Han Hongyang, Chen Gang, Shao Jingshi, Yao Yong. Dynamic Characteristic Analysis and Vibration Reduction Design for Sprayer Frame[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(4):50-53,20.

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  • 在線發(fā)布日期: 2013-03-28
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