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噴桿噴霧機(jī)機(jī)架動(dòng)態(tài)特性分析與減振設(shè)計(jì)
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鎮(zhèn)江市農(nóng)業(yè)支撐資助項(xiàng)目（NY2011002）、江蘇省自然科學(xué)基金資助項(xiàng)目（BK2009200）和江蘇省高校優(yōu)勢(shì)學(xué)科建設(shè)工程資助項(xiàng)目（蘇財(cái)教（2011）8號(hào)）


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(jī)機(jī)架的三維模型，在Hypermesh中建立了機(jī)架的有限元模型，并導(dǎo)入到ANSYS中進(jìn)行了自由模態(tài)分析,并通過(guò)模態(tài)實(shí)驗(yàn)分析了機(jī)架的振動(dòng)特性并驗(yàn)證了有限元模型的準(zhǔn)確性。結(jié)合模態(tài)分析結(jié)果，分析了外部激勵(lì)對(duì)機(jī)架動(dòng)態(tài)特性的影響，發(fā)現(xiàn)發(fā)動(dòng)機(jī)1、2階往復(fù)慣性力的頻率會(huì)導(dǎo)致機(jī)架共振。通過(guò)諧響應(yīng)分析得到機(jī)架的振動(dòng)情況，提出了避免機(jī)架與發(fā)動(dòng)機(jī)共振的方案，對(duì)比了減振前、后的機(jī)架位移響應(yīng)幅值。結(jié)果表明，安裝橡膠減振元件后機(jī)架的動(dòng)態(tài)特性得到明顯改善，提高了整機(jī)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(yáng),陳剛,邵景世,姚勇.噴桿噴霧機(jī)機(jī)架動(dòng)態(tài)特性分析與減振設(shè)計(jì)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),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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